[W126 Coupe] RE:EXTRA SEC's
drmet at pacbell.net
drmet at pacbell.net
Sat Oct 29 09:20:01 EDT 2005
I wish to thank the members for the prompt response to my request for
assistance selling a couple of my SEC's. I have never been connected with a
more intelligent, friendly and honorable group.
Thank you for everything each and everyone of you share with all of us.
Doc
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of mbcoupes-request at mbcoupes.com
Sent: Friday, October 28, 2005 9:00 AM
To: mbcoupes at mbcoupes.com
Subject: MBCOUPES Digest, Vol 12, Issue 44
Send MBCOUPES mailing list submissions to
mbcoupes at mbcoupes.com
To subscribe or unsubscribe via the World Wide Web, visit
http://www.pairlist.net/mailman/listinfo/mbcoupes
or, via email, send a message with subject or body 'help' to
mbcoupes-request at mbcoupes.com
You can reach the person managing the list at
mbcoupes-owner at mbcoupes.com
When replying, please edit your Subject line so it is more specific
than "Re: Contents of MBCOUPES digest..."
Today's Topics:
1. Re: Camshaft Snapped! Intermittant Rough Idle -Me too-HELP!
(airedale at sbcglobal.net)
2. Seat Belt Extenders (Clay Woodward)
3. RE: Seat Belt Extenders (Mister McGoo)
4. EXTRA SEC's (drmet at pacbell.net)
5. Re: Camshaft Snapped! Intermittent Rough Idle -Me too-HELP!
(A figment of the Imagination)
6. Re: Camshaft Snapped! Intermittent Rough Idle -Me too-HELP!
(A figment of the Imagination)
7. RE: Intermittant Rough Idle -Me too - HELP! (Shayegan, Richard)
8. RE: Intermittant Rough Idle -Me too - HELP! (Richard Hogarth)
9. RE: Intermittant Rough Idle -Me too - HELP! (Shayegan, Richard)
10. RE: EXTRA SEC's (alex lowell)
11. RE: Intermittant Rough Idle -Me too - HELP! (Richard Hogarth)
12. S class tranny (Pavel)
----------------------------------------------------------------------
Message: 1
Date: Thu, 27 Oct 2005 23:43:58 -0500
From: <airedale at sbcglobal.net>
Subject: Re: [W126 Coupe] Camshaft Snapped! Intermittant Rough Idle
-Me too-HELP!
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Message-ID: <001801c5db7a$362e8a80$210110ac at JCH>
Content-Type: text/plain; charset="iso-8859-1"
The owner/mechanic ( a graduate mechanical engineer from Kansas University
whose family has for many years and still does own a Mercedes Benz
Dealership in his native Persia ) acted like this is not that unusual an
occurrence in the 560 engine. I got that idea from him saying it always
happens on the left ( drivers ) side. Another mechanic in the shop mentioned
the valves could be bent depending on what position they were in because the
piston continued to move. I did walk back after he said that and noticed in
both cases they were not resting on the peak of the lobes or near the peak.
Maybe because it happened at idle there was no inertia to continue spinning,
I can hope to be so fortunate in light of this unfortunate incident..
John
----- Original Message -----
From: Mister McGoo
To: mbcoupes at mbcoupes.com
Sent: Thursday, October 27, 2005 10:59 PM
Subject: RE: [W126 Coupe] Camshaft Snapped! Intermittant Rough Idle -Me
too-HELP!
Geeze! Does your mechanic have any idea of cause? I have heard of a 420
camshaft breaking, but even that, I understand, was in conjunction with the
timing chain jumping (I didn't see it).
You say you had no compression on No.8.... valve open? And then what
about the piston? (Perhaps you don't know yet......)
Any experiences from anyone else? Rusty?
-Bellamy
----------------------------------------------------------------------------
From: <airedale at sbcglobal.net>
Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Subject: [W126 Coupe] Camshaft Snapped! Intermittant Rough Idle -Me too
-HELP!
Date: Thu, 27 Oct 2005 21:37:01 -0500
>What a shock! Last Saturday I went into the Post Office and left my
>perfect running '91 560SEC idling with my lady friend in attendance.
>When I came out she said the car shook and then started running
>rough. I drove home with this low speed miss but the car could have
>gone as fast as I wanted on the highway. I called my mechanic Monday
>and took it in thinking some electrical or maybe the fuel system was
>amiss. He immediately isolated the cylinder closest to the driver
>and said it had no compression and thought perhaps a lifter had
>collapsed. I left the car there. He called this morning and said the
>left camshaft had snapped! I went there and sure as if it had been
>cut by a hacksaw blade the camshaft was in two pieces broke just
>ahead of the bearing journal before the last cylinder on the drivers
>side. I wad dumbfounded looking at this 1 inch steel bar that had
>snapped like a matchstick. He said in the 560 it always seems to be
>the drivers side camshaft that does this although in other cases he
>has seen it seemed to break farther forward. This is the first time
>on any car I have ever heard of a camshaft snapping. At this moment
>I do not like this German Masterpiece as well as I did.
>John
----------------------------------------------------------------------------
--
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
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Message: 2
Date: Fri, 28 Oct 2005 00:43:49 -0400
From: "Clay Woodward" <Clay500 at msn.com>
Subject: [W126 Coupe] Seat Belt Extenders
To: <mbcoupes at mbcoupes.com>
Message-ID: <BAY106-DAV2B5C7D36DB996E4A0E817E76B0 at phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"
Hello,
My driver side seat belt extends and after I buckle the belt there is about
2 minute delay before it retracts. On the passenger side... as soon as the
seat belt is latched the extender retracts immediately. IF no one sits in
the passenger side... the seat belt extends and NEVER retracts.
I have owned this car for 11 years and neither of the extenders EVER
worked until last week when I had my mechanic check them out and he found
some wiring cut.. as if the previous owner did not want them to operate.
For now I just keep the passenger seat belt buckled (if no riders with me).
This is a 1983 500sec by the way.
Can someone please tell me what is NORMAL operation of the extenders?
Thank you,
Clay
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Message: 3
Date: Fri, 28 Oct 2005 06:37:53 +0000
From: "Mister McGoo" <eelploot at hotmail.com>
Subject: RE: [W126 Coupe] Seat Belt Extenders
To: mbcoupes at mbcoupes.com
Message-ID: <BAY13-F1084D0DEFAF7421C23D653CB6B0 at phx.gbl>
Content-Type: text/plain; charset="us-ascii"
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------------------------------
Message: 4
Date: Fri, 28 Oct 2005 00:50:53 -0700
From: <drmet at pacbell.net>
Subject: [W126 Coupe] EXTRA SEC's
To: <mbcoupes at mbcoupes.com>
Message-ID: <002901c5db94$52815ea0$84b24544 at DRMET>
Content-Type: text/plain; charset="us-ascii"
Ladies and Gentlemen:
I hope I am not breaking any rules nor guidelines by asking all of you if
you happen to know anyone that may wish a 560 SEC.
I have four of them (2 white and 2 black) and they are in my "humble"
opinion quite nice. Should you know someone I wish to tell you that you can
suggest to them to contact me with no fear. I will not sell one without
telling the buyer the absolute truth about the car.
My email is drmet at pacbell.net if they contact me I will treat them with
honor and respect.
If I have made an error by writing this please excuse my faux pas I truly
mean no harm.
Doc
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of mbcoupes-request at mbcoupes.com
Sent: Thursday, October 27, 2005 9:27 PM
To: mbcoupes at mbcoupes.com
Subject: MBCOUPES Digest, Vol 12, Issue 43
Send MBCOUPES mailing list submissions to
mbcoupes at mbcoupes.com
To subscribe or unsubscribe via the World Wide Web, visit
http://www.pairlist.net/mailman/listinfo/mbcoupes
or, via email, send a message with subject or body 'help' to
mbcoupes-request at mbcoupes.com
You can reach the person managing the list at
mbcoupes-owner at mbcoupes.com
When replying, please edit your Subject line so it is more specific
than "Re: Contents of MBCOUPES digest..."
Today's Topics:
1. Intermittant Rough Idle (Robert Cavazos)
2. Re: Intermittant Rough Idle (Dwan)
3. RE: Intermittant Rough Idle (Shayegan, Richard)
4. RE: Intermittant Rough Idle -Me too - HELP! (Richard Hogarth)
5. RE: Intermittant Rough Idle -Me too - HELP! (Shayegan, Richard)
6. Camshaft Snapped! Intermittant Rough Idle -Me too - HELP!
(airedale at sbcglobal.net)
7. RE: Intermittant Rough Idle (Mister McGoo)
8. RE: Intermittant Rough Idle -Me too - HELP! (Richard Hogarth)
9. RE: Camshaft Snapped! Intermittant Rough Idle -Me too -HELP!
(Mister McGoo)
10. RE: KE Jetronic Mixture adjustment procedure 560 s
(Richard Hogarth)
----------------------------------------------------------------------
Message: 1
Date: Thu, 27 Oct 2005 11:54:53 -0700 (PDT)
From: Robert Cavazos <jazzman_390 at yahoo.com>
Subject: [W126 Coupe] Intermittant Rough Idle
To: mbcoupes at mbcoupes.com
Message-ID: <20051027185454.57198.qmail at web90208.mail.scd.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle,
lately however after the car has been running for
about 30-40 mintes the idle starts getting rough
almost like a one cylinder is missing. It can get
pretty bad shaking the car considerably. When the
engine is revved, it seems the miss goes away but
returns at idle. It does not appear to be related to
engine temperature and ambient air temp is about 80.
It also dosesn't appear to be realated to driving
conditions as it will occur with driving around town,
and when coming to a stop after freeway driving.
Background
The fuel injectors were replaced a few thousand miles
ago, and I checked the plugs last weekend looking for
anomolies. They all looked fine. I also wiped out the
inside of the dist cap and rotor thinking there might
be moisture inside due to a recent few days of wet
weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
------------------------------
Message: 2
Date: Thu, 27 Oct 2005 15:35:27 -0400 (EDT)
From: Dwan <onetyronet at peoplepc.com>
Subject: Re: [W126 Coupe] Intermittant Rough Idle
To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
Message-ID:
<1184589.1130441728393.JavaMail.root at mswamui-bichon.atl.sa.earthlink.net>
Content-Type: text/plain; charset=us-ascii
Possible vac leak at check valve,also idle control unit black rectangular
unit on the fire wall on 126's
-----Original Message-----
From: Robert Cavazos <jazzman_390 at yahoo.com>
Sent: Oct 27, 2005 2:54 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Intermittant Rough Idle
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle,
lately however after the car has been running for
about 30-40 mintes the idle starts getting rough
almost like a one cylinder is missing. It can get
pretty bad shaking the car considerably. When the
engine is revved, it seems the miss goes away but
returns at idle. It does not appear to be related to
engine temperature and ambient air temp is about 80.
It also dosesn't appear to be realated to driving
conditions as it will occur with driving around town,
and when coming to a stop after freeway driving.
Background
The fuel injectors were replaced a few thousand miles
ago, and I checked the plugs last weekend looking for
anomolies. They all looked fine. I also wiped out the
inside of the dist cap and rotor thinking there might
be moisture inside due to a recent few days of wet
weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
________________________________________
PeoplePC Online
A better way to Internet
http://www.peoplepc.com
------------------------------
Message: 3
Date: Thu, 27 Oct 2005 16:25:22 -0400
From: "Shayegan, Richard" <rishayegan at davidson.edu>
Subject: RE: [W126 Coupe] Intermittant Rough Idle
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Message-ID:
<245060D7FF2C0B48BF8080FF20241C022256C9 at SWEETIRMA.davidson.edu>
Content-Type: text/plain; charset="us-ascii"
Look around for a vacuum leak with a can of carb cleaner. Are you
positive you took all of the old seals out when you put the new
injectors in? A double sealed injector will cause a vacuum leak and mess
with idle. Also, try richening the mixture a touch.
Richard
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Robert Cavazos
Sent: Thursday, October 27, 2005 2:55 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Intermittant Rough Idle
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle,
lately however after the car has been running for
about 30-40 mintes the idle starts getting rough
almost like a one cylinder is missing. It can get
pretty bad shaking the car considerably. When the
engine is revved, it seems the miss goes away but
returns at idle. It does not appear to be related to
engine temperature and ambient air temp is about 80.
It also dosesn't appear to be realated to driving
conditions as it will occur with driving around town,
and when coming to a stop after freeway driving.
Background
The fuel injectors were replaced a few thousand miles
ago, and I checked the plugs last weekend looking for
anomolies. They all looked fine. I also wiped out the
inside of the dist cap and rotor thinking there might
be moisture inside due to a recent few days of wet
weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
------------------------------
Message: 4
Date: Thu, 27 Oct 2005 20:19:42 -0500
From: "Richard Hogarth" <R_Hogarth at Foundrycove.com>
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
To: "'Dwan'" <onetyronet at peoplepc.com>, "'Mercedes Coupes Mailing
Lists'" <mbcoupes at mbcoupes.com>
Message-ID: <20051028011940.406714C212 at mailwash11.pair.com>
Content-Type: text/plain; charset="us-ascii"
HELP!
When you figure it out, please let me know.
This has been a persistent problem
on my vdhicle and several others that I know of.
I've tried nearly everything and I'm certain that I'm vacuume leak free.
On my car it occurs once the engine comes up to about 65-80 degress on the
temp guage.
On my vehicle it is totally temp related.
I've done the inject seals, replaced the temp sensor, ignition module, coil,
plugs, wires,
swapped injectors, pulled the metal fuel feeder lines and cleaned them out
with a small wire and
carb cleaner as was previously suggested, changed the O2 sensor, replaced
the exhaust manifold gasgets,
Checked for catylitic converter back pressure, replaced the fuel filter,
adjusted the mixture a million times,
replaced all of the vacuume hoses, t's, one way vacuume valves, checked the
IAC valve, brought it to a local
MB "specialist", (no dealer nearby), he is stumped; told me to live with it.
So please HELP!
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Dwan
Sent: Thursday, October 27, 2005 2:35 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Intermittant Rough Idle
Possible vac leak at check valve,also idle control unit black rectangular
unit on the fire wall on 126's
-----Original Message-----
From: Robert Cavazos <jazzman_390 at yahoo.com>
Sent: Oct 27, 2005 2:54 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Intermittant Rough Idle
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle, lately however after
the car has been running for about 30-40 mintes the idle starts getting
rough almost like a one cylinder is missing. It can get pretty bad shaking
the car considerably. When the engine is revved, it seems the miss goes away
but returns at idle. It does not appear to be related to engine temperature
and ambient air temp is about 80.
It also dosesn't appear to be realated to driving conditions as it will
occur with driving around town, and when coming to a stop after freeway
driving.
Background
The fuel injectors were replaced a few thousand miles ago, and I checked the
plugs last weekend looking for anomolies. They all looked fine. I also wiped
out the inside of the dist cap and rotor thinking there might be moisture
inside due to a recent few days of wet weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
________________________________________
PeoplePC Online
A better way to Internet
http://www.peoplepc.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
------------------------------
Message: 5
Date: Thu, 27 Oct 2005 21:36:57 -0400
From: "Shayegan, Richard" <rishayegan at davidson.edu>
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Message-ID:
<245060D7FF2C0B48BF8080FF20241C02225724 at SWEETIRMA.davidson.edu>
Content-Type: text/plain; charset="us-ascii"
Well since it happens when the cold start valve closes I think you need
to richen it, but you say it's not mixture, so maybe the MAF plate is
out of adjustment?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 9:20 PM
To: 'Dwan'; 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
HELP!
When you figure it out, please let me know.
This has been a persistent problem
on my vdhicle and several others that I know of.
I've tried nearly everything and I'm certain that I'm vacuume leak free.
On my car it occurs once the engine comes up to about 65-80 degress on
the
temp guage.
On my vehicle it is totally temp related.
I've done the inject seals, replaced the temp sensor, ignition module,
coil,
plugs, wires,
swapped injectors, pulled the metal fuel feeder lines and cleaned them
out
with a small wire and
carb cleaner as was previously suggested, changed the O2 sensor,
replaced
the exhaust manifold gasgets,
Checked for catylitic converter back pressure, replaced the fuel filter,
adjusted the mixture a million times,
replaced all of the vacuume hoses, t's, one way vacuume valves, checked
the
IAC valve, brought it to a local
MB "specialist", (no dealer nearby), he is stumped; told me to live with
it.
So please HELP!
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Dwan
Sent: Thursday, October 27, 2005 2:35 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Intermittant Rough Idle
Possible vac leak at check valve,also idle control unit black
rectangular
unit on the fire wall on 126's
-----Original Message-----
From: Robert Cavazos <jazzman_390 at yahoo.com>
Sent: Oct 27, 2005 2:54 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Intermittant Rough Idle
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle, lately however
after
the car has been running for about 30-40 mintes the idle starts getting
rough almost like a one cylinder is missing. It can get pretty bad
shaking
the car considerably. When the engine is revved, it seems the miss goes
away
but returns at idle. It does not appear to be related to engine
temperature
and ambient air temp is about 80.
It also dosesn't appear to be realated to driving conditions as it will
occur with driving around town, and when coming to a stop after freeway
driving.
Background
The fuel injectors were replaced a few thousand miles ago, and I checked
the
plugs last weekend looking for anomolies. They all looked fine. I also
wiped
out the inside of the dist cap and rotor thinking there might be
moisture
inside due to a recent few days of wet weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
________________________________________
PeoplePC Online
A better way to Internet
http://www.peoplepc.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
------------------------------
Message: 6
Date: Thu, 27 Oct 2005 21:37:01 -0500
From: <airedale at sbcglobal.net>
Subject: [W126 Coupe] Camshaft Snapped! Intermittant Rough Idle -Me
too - HELP!
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Message-ID: <004c01c5db68$7a3e6b80$210110ac at JCH>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
What a shock! Last Saturday I went into the Post Office and left my perfect
running '91 560SEC idling with my lady friend in attendance. When I came out
she said the car shook and then started running rough. I drove home with
this low speed miss but the car could have gone as fast as I wanted on the
highway. I called my mechanic Monday and took it in thinking some electrical
or maybe the fuel system was amiss. He immediately isolated the cylinder
closest to the driver and said it had no compression and thought perhaps a
lifter had collapsed. I left the car there. He called this morning and said
the left camshaft had snapped! I went there and sure as if it had been cut
by a hacksaw blade the camshaft was in two pieces broke just ahead of the
bearing journal before the last cylinder on the drivers side. I wad
dumbfounded looking at this 1 inch steel bar that had snapped like a
matchstick. He said in the 560 it always seems to be the drivers side
camshaft that does this although in other cases he has seen it seemed to
break farther forward. This is the first time on any car I have ever heard
of a camshaft snapping. At this moment I do not like this German Masterpiece
as well as I did.
John
----- Original Message -----
From: "Shayegan, Richard" <rishayegan at davidson.edu>
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Sent: Thursday, October 27, 2005 8:36 PM
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Well since it happens when the cold start valve closes I think you need
to richen it, but you say it's not mixture, so maybe the MAF plate is
out of adjustment?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 9:20 PM
To: 'Dwan'; 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
HELP!
When you figure it out, please let me know.
This has been a persistent problem
on my vdhicle and several others that I know of.
I've tried nearly everything and I'm certain that I'm vacuume leak free.
On my car it occurs once the engine comes up to about 65-80 degress on
the
temp guage.
On my vehicle it is totally temp related.
I've done the inject seals, replaced the temp sensor, ignition module,
coil,
plugs, wires,
swapped injectors, pulled the metal fuel feeder lines and cleaned them
out
with a small wire and
carb cleaner as was previously suggested, changed the O2 sensor,
replaced
the exhaust manifold gasgets,
Checked for catylitic converter back pressure, replaced the fuel filter,
adjusted the mixture a million times,
replaced all of the vacuume hoses, t's, one way vacuume valves, checked
the
IAC valve, brought it to a local
MB "specialist", (no dealer nearby), he is stumped; told me to live with
it.
So please HELP!
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Dwan
Sent: Thursday, October 27, 2005 2:35 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Intermittant Rough Idle
Possible vac leak at check valve,also idle control unit black
rectangular
unit on the fire wall on 126's
-----Original Message-----
From: Robert Cavazos <jazzman_390 at yahoo.com>
Sent: Oct 27, 2005 2:54 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Intermittant Rough Idle
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle, lately however
after
the car has been running for about 30-40 mintes the idle starts getting
rough almost like a one cylinder is missing. It can get pretty bad
shaking
the car considerably. When the engine is revved, it seems the miss goes
away
but returns at idle. It does not appear to be related to engine
temperature
and ambient air temp is about 80.
It also dosesn't appear to be realated to driving conditions as it will
occur with driving around town, and when coming to a stop after freeway
driving.
Background
The fuel injectors were replaced a few thousand miles ago, and I checked
the
plugs last weekend looking for anomolies. They all looked fine. I also
wiped
out the inside of the dist cap and rotor thinking there might be
moisture
inside due to a recent few days of wet weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
________________________________________
PeoplePC Online
A better way to Internet
http://www.peoplepc.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
------------------------------
Message: 7
Date: Fri, 28 Oct 2005 03:21:29 +0000
From: "Mister McGoo" <eelploot at hotmail.com>
Subject: RE: [W126 Coupe] Intermittant Rough Idle
To: mbcoupes at mbcoupes.com
Message-ID: <BAY13-F30EB0608018D92E62DB3E7CB6B0 at phx.gbl>
Content-Type: text/plain; charset="us-ascii"
An HTML attachment was scrubbed...
URL:
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achment-0001.html
------------------------------
Message: 8
Date: Thu, 27 Oct 2005 22:25:02 -0500
From: "Richard Hogarth" <R_Hogarth at Foundrycove.com>
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
To: "'Mercedes Coupes Mailing Lists'" <mbcoupes at mbcoupes.com>
Message-ID: <20051028032420.010F64C21A at mailwash11.pair.com>
Content-Type: text/plain; charset="us-ascii"
The MAF plate does not bind and seems to move smoothly and seems to have the
right tension.
I've always thought that MAF plate problems had more to do with hesitation
and acceleration.
BTW- the compression is all within spec across the board.
The car accellerates great, smooth as silk once it comes off idle, but it
idles like it has 2 dead cylinders.
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Shayegan, Richard
Sent: Thursday, October 27, 2005 8:37 PM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Well since it happens when the cold start valve closes I think you need to
richen it, but you say it's not mixture, so maybe the MAF plate is out of
adjustment?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 9:20 PM
To: 'Dwan'; 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
HELP!
When you figure it out, please let me know.
This has been a persistent problem
on my vdhicle and several others that I know of.
I've tried nearly everything and I'm certain that I'm vacuume leak free.
On my car it occurs once the engine comes up to about 65-80 degress on the
temp guage.
On my vehicle it is totally temp related.
I've done the inject seals, replaced the temp sensor, ignition module, coil,
plugs, wires, swapped injectors, pulled the metal fuel feeder lines and
cleaned them out with a small wire and carb cleaner as was previously
suggested, changed the O2 sensor, replaced the exhaust manifold gasgets,
Checked for catylitic converter back pressure, replaced the fuel filter,
adjusted the mixture a million times, replaced all of the vacuume hoses,
t's, one way vacuume valves, checked the IAC valve, brought it to a local MB
"specialist", (no dealer nearby), he is stumped; told me to live with it.
So please HELP!
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Dwan
Sent: Thursday, October 27, 2005 2:35 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Intermittant Rough Idle
Possible vac leak at check valve,also idle control unit black rectangular
unit on the fire wall on 126's
-----Original Message-----
From: Robert Cavazos <jazzman_390 at yahoo.com>
Sent: Oct 27, 2005 2:54 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Intermittant Rough Idle
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle, lately however after
the car has been running for about 30-40 mintes the idle starts getting
rough almost like a one cylinder is missing. It can get pretty bad shaking
the car considerably. When the engine is revved, it seems the miss goes away
but returns at idle. It does not appear to be related to engine temperature
and ambient air temp is about 80.
It also dosesn't appear to be realated to driving conditions as it will
occur with driving around town, and when coming to a stop after freeway
driving.
Background
The fuel injectors were replaced a few thousand miles ago, and I checked the
plugs last weekend looking for anomolies. They all looked fine. I also wiped
out the inside of the dist cap and rotor thinking there might be moisture
inside due to a recent few days of wet weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
________________________________________
PeoplePC Online
A better way to Internet
http://www.peoplepc.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
------------------------------
Message: 9
Date: Fri, 28 Oct 2005 03:59:57 +0000
From: "Mister McGoo" <eelploot at hotmail.com>
Subject: RE: [W126 Coupe] Camshaft Snapped! Intermittant Rough Idle
-Me too -HELP!
To: mbcoupes at mbcoupes.com
Message-ID: <BAY13-F23228DFAD7FF682D7011C4CB6B0 at phx.gbl>
Content-Type: text/plain; charset="us-ascii"
An HTML attachment was scrubbed...
URL:
http://www.pairlist.net/pipermail/mbcoupes/attachments/20051028/5f03d79a/att
achment-0001.htm
------------------------------
Message: 10
Date: Thu, 27 Oct 2005 23:27:50 -0500
From: "Richard Hogarth" <R_Hogarth at Foundrycove.com>
Subject: RE: [W126 Coupe] KE Jetronic Mixture adjustment procedure 560
s
To: "'Dwan'" <onetyronet at peoplepc.com>, "'Mercedes Coupes Mailing
Lists'" <mbcoupes at mbcoupes.com>
Message-ID: <20051028042654.792374C226 at mailwash11.pair.com>
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------------------------------
The MB Coupes Website!
W126 SEC Coupes
Postings remain property of MB Coupes, L.L.C.
End of MBCOUPES Digest, Vol 12, Issue 43
****************************************
------------------------------
Message: 5
Date: Fri, 28 Oct 2005 05:57:57 -0700 (PDT)
From: A figment of the Imagination <figstir at yahoo.com>
Subject: Re: [W126 Coupe] Camshaft Snapped! Intermittent Rough Idle
-Me too-HELP!
To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
Message-ID: <20051028125757.81238.qmail at web31504.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
Does anyone know if the pistons on *these* engines
simply generate more than an unusual amount of thrust,
that translates into stress that ultimately wears out
lifters, rocker arms, cams, camshafts, journal
bearings, bearing bolts, to the point that a weak spot
in the metal could develop that ultimately severs the
camshaft or that loosens a piece of metal to jam the
camshaft and promote a fracture?
For instance, if you had been driving around for a
while with a high idle speed problem and a cylinder
that was not functioning correctly causing rough
idle/acceleration, this could have translated into
uneven stress along the camshaft. This differential
in force could have contributed to metal weakening,
ultimately leading to fracture at the shearing point
from two opposite forces. So, it's important to
carefully identify where the break occurred. Once
that is done, you will need to identify what created
the differential in force along the camshaft. You
should check for worn out rocker arms that could have
been so worn out that they became loose and then
jammed your camshaft while the engine was rotating.
Other causes could be broken/loosened springs,
lifters, journals, journal bolts....
If the problem actually occurred during idle instead
of while driving (after the loud noise), a very high
idle speed could have provided all the force that was
necessary to snap your camshaft. At the notorious
15,000 rpm high idle speed, there would be plenty of
torque for shearing and there would be plenty of
vibration for movement of a flattened rocker arm (or
other metal element) when it was coupled with a poorly
functioning cylinder (or cams) to begin with. As
mentioned, amplification of some resonant frequency
could have contributed to the damage.
It would helpful if you could describe any unusual
metal sounds, snapping, clanging, loud high frequency
tapping, thunks, overwhelmingly rough
idle/acceleration during idle and/or the drive (after
the initial noise)?
Regarding the extent of the damage:
Based on what you have written, my guess would be that
you may have lucked out on what could have been much
worse. While I have no real idea, MBZ engineers could
have additionally designed the camshafts to be made of
a softer metal to deliberately shear/fracture to
minimize compressive forces against valves and lifters
per cylinder, specifically more so, for the cylinder
where the fracture occured.
The answer to extent of the damage really depends on
how intact the rest of the camshaft was and how
tightly the journals were secure to the cylinder head.
While you are examining the system, if you find that
*all* your journals came undone, you may be looking at
stripped out journal bolt sockets and extensive damage
throughout the system (valves, rods, rocker arms,
lifters, cams, cylinder, heads, etc....) If the
journals were intact, you may want to look for broken
or worn out elements from rocker arms, lifters,
springs, other metals. Any loose metal, as stated
above, could have jammed the camshaft prohibiting it
from normal rotation.
So the next thing to look for would be the fracture?
Is it a tranverse fx or a spiral one? Transverse fx
are straight across. Spirals have a slight angle to
them. Look at the cross-section of the shaft for
signs of shearing. A transverse fx could point to a
hammer like compressive force such a throwing of the
timing chain. A spiral fx could point to something
jamming your camshaft, like a loosened, misplaced
rocker arm (from a poorly firing cylinder, loosened
journal bolts, stripped journal bolt sockets,
mistiming from the distributor cap, loose plugs,
wires, etc...everything on forward creating uneven or
overly amplified destructive resonant
frequencies/harmonics).
You will definitely have to identify the type of fx
because it may help us all learn about ways of
preventing such a catastrophe. It will also allow you
a way to go in and properly correct the root of the
problem.
On the flip side, the MBZ camshafts may have a serious
material or craftsman ship flaw. If this can be
proven, you may be eligible, if some warranty still
existed, for compensation. You may want to inspect
the camshaft and try to isolate if any seams came
loose.
Here's some food for thought:
What seems to cause most timing chains to break? Does
this problem relate to inferior
camshafts/housings/springs/rocker
arms/lifters/assembly/timing chains, guides?
Could camshafts simply get jammed while the engine is
turning and thus induce timing chain breakage? If so,
what are the possibilities to cause this? I've already
discussed some theoretical causes.
Finally:
IMO, I still consider your 560 SEC as a masterpiece
worthy of keeping. In general, I think it is a
trade-off...the more time and energy you work to put
into the car, the greater and sweeter is the ride,
when it is all done. Your car deserves it. So, I
recommend fixing it.
Without any question, these SECs still have the
finest/smoothest ride of any car I've ever driven.
Just an opinion, of course.
Good luck.
-Figstir
__________________________________
Yahoo! Mail - PC Magazine Editors' Choice 2005
http://mail.yahoo.com
------------------------------
Message: 6
Date: Fri, 28 Oct 2005 06:00:37 -0700 (PDT)
From: A figment of the Imagination <figstir at yahoo.com>
Subject: Re: [W126 Coupe] Camshaft Snapped! Intermittent Rough Idle
-Me too-HELP!
To: figstir at yahoo.com, Mercedes Coupes Mailing Lists
<mbcoupes at mbcoupes.com>
Message-ID: <20051028130038.69337.qmail at web31506.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
correction: 1500 rpm
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
------------------------------
Message: 7
Date: Fri, 28 Oct 2005 09:27:40 -0400
From: "Shayegan, Richard" <rishayegan at davidson.edu>
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Message-ID:
<245060D7FF2C0B48BF8080FF20241C0222578E at SWEETIRMA.davidson.edu>
Content-Type: text/plain; charset="us-ascii"
Did you try really richening it up? When I had an injector seal leak at
one cylinder (the new seal had been put on top of the old seal), it
acted exactly as you described, but richening it a lot would overcome
the leak (it would also bog down the engine a bit). Also, do you know if
the distributor is good?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 11:25 PM
To: 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
The MAF plate does not bind and seems to move smoothly and seems to have
the
right tension.
I've always thought that MAF plate problems had more to do with
hesitation
and acceleration.
BTW- the compression is all within spec across the board.
The car accellerates great, smooth as silk once it comes off idle, but
it
idles like it has 2 dead cylinders.
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Shayegan, Richard
Sent: Thursday, October 27, 2005 8:37 PM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Well since it happens when the cold start valve closes I think you need
to
richen it, but you say it's not mixture, so maybe the MAF plate is out
of
adjustment?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 9:20 PM
To: 'Dwan'; 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
HELP!
When you figure it out, please let me know.
This has been a persistent problem
on my vdhicle and several others that I know of.
I've tried nearly everything and I'm certain that I'm vacuume leak free.
On my car it occurs once the engine comes up to about 65-80 degress on
the
temp guage.
On my vehicle it is totally temp related.
I've done the inject seals, replaced the temp sensor, ignition module,
coil,
plugs, wires, swapped injectors, pulled the metal fuel feeder lines and
cleaned them out with a small wire and carb cleaner as was previously
suggested, changed the O2 sensor, replaced the exhaust manifold gasgets,
Checked for catylitic converter back pressure, replaced the fuel filter,
adjusted the mixture a million times, replaced all of the vacuume hoses,
t's, one way vacuume valves, checked the IAC valve, brought it to a
local MB
"specialist", (no dealer nearby), he is stumped; told me to live with
it.
So please HELP!
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Dwan
Sent: Thursday, October 27, 2005 2:35 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Intermittant Rough Idle
Possible vac leak at check valve,also idle control unit black
rectangular
unit on the fire wall on 126's
-----Original Message-----
From: Robert Cavazos <jazzman_390 at yahoo.com>
Sent: Oct 27, 2005 2:54 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Intermittant Rough Idle
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle, lately however
after
the car has been running for about 30-40 mintes the idle starts getting
rough almost like a one cylinder is missing. It can get pretty bad
shaking
the car considerably. When the engine is revved, it seems the miss goes
away
but returns at idle. It does not appear to be related to engine
temperature
and ambient air temp is about 80.
It also dosesn't appear to be realated to driving conditions as it will
occur with driving around town, and when coming to a stop after freeway
driving.
Background
The fuel injectors were replaced a few thousand miles ago, and I checked
the
plugs last weekend looking for anomolies. They all looked fine. I also
wiped
out the inside of the dist cap and rotor thinking there might be
moisture
inside due to a recent few days of wet weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
________________________________________
PeoplePC Online
A better way to Internet
http://www.peoplepc.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
------------------------------
Message: 8
Date: Fri, 28 Oct 2005 08:49:37 -0500
From: "Richard Hogarth" <R_Hogarth at Foundrycove.com>
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
To: "'Mercedes Coupes Mailing Lists'" <mbcoupes at mbcoupes.com>
Message-ID: <20051028134921.B57C64C214 at mailwash11.pair.com>
Content-Type: text/plain; charset="us-ascii"
Richard,
Yes, if I richen up the mixture enough the idle smoothes out but the engine
bogs down just as you say.
Its the consistency of the problem at specific temperatures that confuses
me.
I'll take you suggestion, pull all the injectors and look for double seals,
torn seals etc.
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Shayegan, Richard
Sent: Friday, October 28, 2005 8:28 AM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Did you try really richening it up? When I had an injector seal leak at one
cylinder (the new seal had been put on top of the old seal), it acted
exactly as you described, but richening it a lot would overcome the leak (it
would also bog down the engine a bit). Also, do you know if the distributor
is good?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 11:25 PM
To: 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
The MAF plate does not bind and seems to move smoothly and seems to have the
right tension.
I've always thought that MAF plate problems had more to do with hesitation
and acceleration.
BTW- the compression is all within spec across the board.
The car accellerates great, smooth as silk once it comes off idle, but it
idles like it has 2 dead cylinders.
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Shayegan, Richard
Sent: Thursday, October 27, 2005 8:37 PM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Well since it happens when the cold start valve closes I think you need to
richen it, but you say it's not mixture, so maybe the MAF plate is out of
adjustment?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 9:20 PM
To: 'Dwan'; 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
HELP!
When you figure it out, please let me know.
This has been a persistent problem
on my vdhicle and several others that I know of.
I've tried nearly everything and I'm certain that I'm vacuume leak free.
On my car it occurs once the engine comes up to about 65-80 degress on the
temp guage.
On my vehicle it is totally temp related.
I've done the inject seals, replaced the temp sensor, ignition module, coil,
plugs, wires, swapped injectors, pulled the metal fuel feeder lines and
cleaned them out with a small wire and carb cleaner as was previously
suggested, changed the O2 sensor, replaced the exhaust manifold gasgets,
Checked for catylitic converter back pressure, replaced the fuel filter,
adjusted the mixture a million times, replaced all of the vacuume hoses,
t's, one way vacuume valves, checked the IAC valve, brought it to a local MB
"specialist", (no dealer nearby), he is stumped; told me to live with it.
So please HELP!
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Dwan
Sent: Thursday, October 27, 2005 2:35 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Intermittant Rough Idle
Possible vac leak at check valve,also idle control unit black rectangular
unit on the fire wall on 126's
-----Original Message-----
From: Robert Cavazos <jazzman_390 at yahoo.com>
Sent: Oct 27, 2005 2:54 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Intermittant Rough Idle
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle, lately however after
the car has been running for about 30-40 mintes the idle starts getting
rough almost like a one cylinder is missing. It can get pretty bad shaking
the car considerably. When the engine is revved, it seems the miss goes away
but returns at idle. It does not appear to be related to engine temperature
and ambient air temp is about 80.
It also dosesn't appear to be realated to driving conditions as it will
occur with driving around town, and when coming to a stop after freeway
driving.
Background
The fuel injectors were replaced a few thousand miles ago, and I checked the
plugs last weekend looking for anomolies. They all looked fine. I also wiped
out the inside of the dist cap and rotor thinking there might be moisture
inside due to a recent few days of wet weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
________________________________________
PeoplePC Online
A better way to Internet
http://www.peoplepc.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
------------------------------
Message: 9
Date: Fri, 28 Oct 2005 10:41:42 -0400
From: "Shayegan, Richard" <rishayegan at davidson.edu>
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Message-ID:
<245060D7FF2C0B48BF8080FF20241C022257AA at SWEETIRMA.davidson.edu>
Content-Type: text/plain; charset="us-ascii"
Or just get it running rough, take a can of carb cleaner, and spray it
around each injector, when it smoothes out you've found your bad
injector seal. The temperature relation I think is because 65C is when
the cold start valve closes, so until then the cold start valve is
richening the mixture enough to smooth things out, then the engine gets
to 65C, the cold start valve closes, and you have a cylinder running
lean.
Richard
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Friday, October 28, 2005 9:50 AM
To: 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Richard,
Yes, if I richen up the mixture enough the idle smoothes out but the
engine
bogs down just as you say.
Its the consistency of the problem at specific temperatures that
confuses
me.
I'll take you suggestion, pull all the injectors and look for double
seals,
torn seals etc.
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Shayegan, Richard
Sent: Friday, October 28, 2005 8:28 AM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Did you try really richening it up? When I had an injector seal leak at
one
cylinder (the new seal had been put on top of the old seal), it acted
exactly as you described, but richening it a lot would overcome the leak
(it
would also bog down the engine a bit). Also, do you know if the
distributor
is good?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 11:25 PM
To: 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
The MAF plate does not bind and seems to move smoothly and seems to have
the
right tension.
I've always thought that MAF plate problems had more to do with
hesitation
and acceleration.
BTW- the compression is all within spec across the board.
The car accellerates great, smooth as silk once it comes off idle, but
it
idles like it has 2 dead cylinders.
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Shayegan, Richard
Sent: Thursday, October 27, 2005 8:37 PM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Well since it happens when the cold start valve closes I think you need
to
richen it, but you say it's not mixture, so maybe the MAF plate is out
of
adjustment?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 9:20 PM
To: 'Dwan'; 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
HELP!
When you figure it out, please let me know.
This has been a persistent problem
on my vdhicle and several others that I know of.
I've tried nearly everything and I'm certain that I'm vacuume leak free.
On my car it occurs once the engine comes up to about 65-80 degress on
the
temp guage.
On my vehicle it is totally temp related.
I've done the inject seals, replaced the temp sensor, ignition module,
coil,
plugs, wires, swapped injectors, pulled the metal fuel feeder lines and
cleaned them out with a small wire and carb cleaner as was previously
suggested, changed the O2 sensor, replaced the exhaust manifold gasgets,
Checked for catylitic converter back pressure, replaced the fuel filter,
adjusted the mixture a million times, replaced all of the vacuume hoses,
t's, one way vacuume valves, checked the IAC valve, brought it to a
local MB
"specialist", (no dealer nearby), he is stumped; told me to live with
it.
So please HELP!
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Dwan
Sent: Thursday, October 27, 2005 2:35 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Intermittant Rough Idle
Possible vac leak at check valve,also idle control unit black
rectangular
unit on the fire wall on 126's
-----Original Message-----
From: Robert Cavazos <jazzman_390 at yahoo.com>
Sent: Oct 27, 2005 2:54 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Intermittant Rough Idle
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle, lately however
after
the car has been running for about 30-40 mintes the idle starts getting
rough almost like a one cylinder is missing. It can get pretty bad
shaking
the car considerably. When the engine is revved, it seems the miss goes
away
but returns at idle. It does not appear to be related to engine
temperature
and ambient air temp is about 80.
It also dosesn't appear to be realated to driving conditions as it will
occur with driving around town, and when coming to a stop after freeway
driving.
Background
The fuel injectors were replaced a few thousand miles ago, and I checked
the
plugs last weekend looking for anomolies. They all looked fine. I also
wiped
out the inside of the dist cap and rotor thinking there might be
moisture
inside due to a recent few days of wet weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
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________________________________________
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Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
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------------------------------
Message: 10
Date: Fri, 28 Oct 2005 09:42:21 -0500
From: "alex lowell" <allowell at hotmail.com>
Subject: RE: [W126 Coupe] EXTRA SEC's
To: mbcoupes at mbcoupes.com
Message-ID: <BAY102-F1536A90B9F6C73B4843EEFD36B0 at phx.gbl>
Content-Type: text/plain; charset="us-ascii"
An HTML attachment was scrubbed...
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------------------------------
Message: 11
Date: Fri, 28 Oct 2005 09:48:18 -0500
From: "Richard Hogarth" <R_Hogarth at Foundrycove.com>
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
To: "'Mercedes Coupes Mailing Lists'" <mbcoupes at mbcoupes.com>
Message-ID: <20051028144743.976144C290 at mailwash11.pair.com>
Content-Type: text/plain; charset="us-ascii"
Sounds logical.
I'll try it!
-RH
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Shayegan, Richard
Sent: Friday, October 28, 2005 9:42 AM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Or just get it running rough, take a can of carb cleaner, and spray it
around each injector, when it smoothes out you've found your bad injector
seal. The temperature relation I think is because 65C is when the cold start
valve closes, so until then the cold start valve is richening the mixture
enough to smooth things out, then the engine gets to 65C, the cold start
valve closes, and you have a cylinder running lean.
Richard
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Friday, October 28, 2005 9:50 AM
To: 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Richard,
Yes, if I richen up the mixture enough the idle smoothes out but the engine
bogs down just as you say.
Its the consistency of the problem at specific temperatures that confuses
me.
I'll take you suggestion, pull all the injectors and look for double seals,
torn seals etc.
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Shayegan, Richard
Sent: Friday, October 28, 2005 8:28 AM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Did you try really richening it up? When I had an injector seal leak at one
cylinder (the new seal had been put on top of the old seal), it acted
exactly as you described, but richening it a lot would overcome the leak (it
would also bog down the engine a bit). Also, do you know if the distributor
is good?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 11:25 PM
To: 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
The MAF plate does not bind and seems to move smoothly and seems to have the
right tension.
I've always thought that MAF plate problems had more to do with hesitation
and acceleration.
BTW- the compression is all within spec across the board.
The car accellerates great, smooth as silk once it comes off idle, but it
idles like it has 2 dead cylinders.
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Shayegan, Richard
Sent: Thursday, October 27, 2005 8:37 PM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
Well since it happens when the cold start valve closes I think you need to
richen it, but you say it's not mixture, so maybe the MAF plate is out of
adjustment?
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Thursday, October 27, 2005 9:20 PM
To: 'Dwan'; 'Mercedes Coupes Mailing Lists'
Subject: RE: [W126 Coupe] Intermittant Rough Idle -Me too - HELP!
HELP!
When you figure it out, please let me know.
This has been a persistent problem
on my vdhicle and several others that I know of.
I've tried nearly everything and I'm certain that I'm vacuume leak free.
On my car it occurs once the engine comes up to about 65-80 degress on the
temp guage.
On my vehicle it is totally temp related.
I've done the inject seals, replaced the temp sensor, ignition module, coil,
plugs, wires, swapped injectors, pulled the metal fuel feeder lines and
cleaned them out with a small wire and carb cleaner as was previously
suggested, changed the O2 sensor, replaced the exhaust manifold gasgets,
Checked for catylitic converter back pressure, replaced the fuel filter,
adjusted the mixture a million times, replaced all of the vacuume hoses,
t's, one way vacuume valves, checked the IAC valve, brought it to a local MB
"specialist", (no dealer nearby), he is stumped; told me to live with it.
So please HELP!
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Dwan
Sent: Thursday, October 27, 2005 2:35 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Intermittant Rough Idle
Possible vac leak at check valve,also idle control unit black rectangular
unit on the fire wall on 126's
-----Original Message-----
From: Robert Cavazos <jazzman_390 at yahoo.com>
Sent: Oct 27, 2005 2:54 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Intermittant Rough Idle
I need advice from the diagnostic folks.
My wife's '87 560SL typically has a silky smooth idle, lately however after
the car has been running for about 30-40 mintes the idle starts getting
rough almost like a one cylinder is missing. It can get pretty bad shaking
the car considerably. When the engine is revved, it seems the miss goes away
but returns at idle. It does not appear to be related to engine temperature
and ambient air temp is about 80.
It also dosesn't appear to be realated to driving conditions as it will
occur with driving around town, and when coming to a stop after freeway
driving.
Background
The fuel injectors were replaced a few thousand miles ago, and I checked the
plugs last weekend looking for anomolies. They all looked fine. I also wiped
out the inside of the dist cap and rotor thinking there might be moisture
inside due to a recent few days of wet weather.
Any ideas what else to look at or try?
Bob Cavazos
__________________________________
Yahoo! FareChase: Search multiple travel sites in one click.
http://farechase.yahoo.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
________________________________________
PeoplePC Online
A better way to Internet
http://www.peoplepc.com
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
------------------------------
Message: 12
Date: Fri, 28 Oct 2005 10:17:21 CDT
From: Pavel <zhur0002 at umn.edu>
Subject: [W126 Coupe] S class tranny
To: Mercedes Web <mbcoupes at mbcoupes.com>
Message-ID: <200510281517.j9SFHL6t011213 at vanguard.software.umn.edu>
Content-Type: TEXT/plain; CHARSET=US-ASCII
Hi,
Does any one know what type of later tranny's fit the w126 chasis cars.
Will a 2000 500s tranny fit, without major modifications. I know Satish
put a 500e tranny in his car and all he had to change was the back of it to
allow the use of a stock w126 tranny mount. Would it be the same with the
later w220 S class and w140 s class tranny's. Or will I need to make a
custom driveshaft, and will they even bolt up to m116 an m117 blocks?
thanks
Pavel
------------------------------
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End of MBCOUPES Digest, Vol 12, Issue 44
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