[W126 Coupe] Vacuum problem? Got the car running!

[Eddie]

Give the 2 rear vacuum lines a light tug (going to the tranny and around the
engine).  I have the same problem, and replacing the vacuum line improved
the idle SIGNIFICANTLY.  When I went to tug it, it simply snapped right off.
I would say it's almost cured.  I was thinking about ignition problems too,
but I discovered there was a crack on that vacuum line where it sits against
the transmission.  I think it's the friction and heat that cracked it,
perhaps you have the same problem?  It didn't show up when testing vacuum
elsewhere.

BTW, I'd like to thank Mike Ramay, Nathan, and Jonathon Hodgman, they've
helped me quite a bit off-line with my rough idle.  It's NEARLY cured.

Eddie

-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of David Fatovic
Sent: Saturday, July 09, 2005 4:07 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Vacuum problem? Got the car running!

Well, today I was able to get the SEL running.  I
switched out the ignition module from my 85 SEC to the
85 SEL.  Fired right up!  So I got that running,
changed the oil, new plugs, new plug wires, tranny
fluid and filter change.  It is running, it does have
more power, but it still has the stumble under load at
low RPM.  

Basically the car stutters, and with the AC on it
almost feels like when you are stepping on the gas
from a dead start, like it is just going to stall.  

Any ideas?  At highway speeds when you step on the
gas, it goes like it should, at cuising speeds the car
feels fine.

any ideas?

david

--- Mister McGoo <eelploot at hotmail.com> wrote:


---------------------------------

A replacement for the Bosch ignition module (02 545 26
32) for models prior to '86 is made in Germany by
Hueco at approx $150.

 



>From: jralex at ix.netcom.com
>Reply-To: jralex at ix.netcom.com,Mercedes Coupes
Mailing Lists <mbcoupes at mbcoupes.com>
>To: Mercedes Coupes Mailing Lists
<mbcoupes at mbcoupes.com>
>Subject: Re: [W126 Coupe] Vacuum problem?
>Date: Wed, 6 Jul 2005 23:28:53 -0500 (GMT-05:00)
>
>The MB Coupes Website!
>W126 SEC Mailing List
>Postings remain property of MB Coupes, L.L.C.



---------------------------------
Content-Type: text/html;
charset=us-asciiContent-Transfer-Encoding: 7bitA much
better ignition system and for less money is the MSD.
Check archives. Nathang has some great write ups about
it. Jim Alex


-----Original Message----- 
From: Mister McGoo 
Sent: Jul 6, 2005 11:54 AM 
To: mbcoupes at mbcoupes.com 
Subject: Re: [W126 Coupe] Vacuum problem? 


David;

A quick way to see if you have any spark, and seeing
as you obviously already have the air cleaner off, is
to sqirt starting fluid or a couple tablespoon of gas
through the air intake and see if it fires up (for a
second or two)

You're likely right about the coil.  The symptoms are
closer, they  can act up first and then fail.

The other option is the ignition module but they
usually die instantly with no warning.  

A new coil is by far the cheapest part, abt $75.  The
ign module is more like $500.  The one in an '89SEC is
over $1,500. ouch!




>From: David Fatovic <coloradocroat at yahoo.com>
>Reply-To: Mercedes Coupes Mailing Lists
<mbcoupes at mbcoupes.com>
>To: Mercedes Coupes Mailing Lists
<mbcoupes at mbcoupes.com>
>Subject: Re: [W126 Coupe] Vacuum problem?
>Date: Wed, 6 Jul 2005 05:01:45 -0700 (PDT)
>
>We put a spark tester on a few of the wires, it will
>show the spark through the cable.  Nothing.
>
>David



> 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.