[W126 Coupe] "Whirring" noise in the engine

[Jonathan Hodgman]

worn reverse and front pump cheesing out are two very different 
problems..  your reverse clutches were/are weak, lucas has an additive 
package that helps make them Grab, as well as thickening the fluid which 
ups the pressure on the band/clutch pack.

You can buy a good bit of time w/ lucas and worn clutches.  Switching to 
Type F helps as well.

Jonathan

On 2/1/2011 6:42 PM, mavris2 wrote:

> Not in anyway would i promote this.... But if worse came to worse and 

> it turns out trans pump. I would try some lucas tranny additive. A few 

> years ago my tranny would lung into reverse. Long story short 2 

> different shops said needs tranny. I put the lucas in and the reverse 

> problem completly went away. Maybe it will help the seals in the pump 

> if thats where its coming from?

>

> Jason

>

> ------------------------------------------------------------------------

> From: Jonathan Hodgman <jhodgman at gmail.com>

> Sent: Tuesday, February 01, 2011 4:58 PM

> To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>

> Subject: Re: [W126 Coupe] "Whirring" noise in the engine

>

> if it's from the trans only thing that would whir would be the front 

> pump....NG :(

>

>

> On 2/1/2011 4:47 PM, Michael Ramay wrote:

>> I did the long screwdriver to the ear trick and it, unfortunately, 

>> ain't the pump. Darn. Good idea though.

>>

>> What about something in the front of the tranny??

>>

>> On Tue, Feb 1, 2011 at 1:46 PM, Jonathan Hodgman <jhodgman at gmail.com 

>> <mailto:jhodgman at gmail.com>> wrote:

>>

>>     they don't have to leak to make noise;-)

>>

>>     On jack's SEC his pump made noise when it was cold.

>>

>>

>>

>>     On 2/1/2011 4:35 PM, Michael Ramay wrote:

>>>     Thought about that too and took mine apart (it was fine), then

>>>     put in a new set of viton o-rings. It "should" be good for ten

>>>     more years.

>>>

>>>     Good ideas, but not the problem one yet!!

>>>     Mike

>>>

>>>     On Tue, Feb 1, 2011 at 9:13 AM, Jonathan Hodgman

>>>     <jhodgman at gmail.com <mailto:jhodgman at gmail.com>> wrote:

>>>

>>>         I've seen the SLS pumps make a noise that's hard to locate..

>>>

>>>

>>>

>>>         On 2/1/2011 9:22 AM, Michael Ramay wrote:

>>>>         It's not turning and it's unplugged.

>>>>

>>>>         On Tue, Feb 1, 2011 at 6:15 AM, Markus Meyer

>>>>         <markusfmeyer at gmail.com <mailto:markusfmeyer at gmail.com>> wrote:

>>>>

>>>>             Is your air  pump unplugged?  That's what mine sounded

>>>>             like till I unplugged it.

>>>>             Markus

>>>>

>>>>             On Tue, Feb 1, 2011 at 9:00 AM, Michael Ramay

>>>>             <mike.ramay at gmail.com <mailto:mike.ramay at gmail.com>> wrote:

>>>>

>>>>                 My '87 560SEL makes a "whirring" noise when it's

>>>>                 first started. Sounds almost like a bad bearing in

>>>>                 the alternator and loud enough that my wife is

>>>>                 commenting on it but in a mile or so it goes away.

>>>>

>>>>                 - I removed all the V-belts on the front of the

>>>>                 motor, still have the noise.

>>>>                 - Since it sounds like it's coming from the

>>>>                 passenger side of the engine up high, I removed

>>>>                 that valve cover then ran the engine - it was louder.

>>>>                 - Put in a new timing chain and new guides.

>>>>                 !@#$%^&* - still have the noise but the car has

>>>>                 noticeably more power.

>>>>

>>>>                 It REALLY needed the guides since one was broken in

>>>>                 two and a 3" long piece is missing plus another had

>>>>                 the hole for the retention pin wallowed out.  I

>>>>                 looked very carefully down the chain pathway during

>>>>                 the installations but no sign of the piece.

>>>>

>>>>                 Will removal of the oil pan allow me to see much of

>>>>                 the lower timing chain guide area? If the missing

>>>>                 chain guide is jammed in there and rubbing on the

>>>>                 rotating bits, why would the noise diminish in a

>>>>                 minute or so of operation?

>>>>

>>>>                 Suggestions??

>>>>

>>>>                 Thanks,

>>>>                 Mike

>>>>

>>>>

>>>>

>>>>

>>

>>

>> The MB Coupes Website!

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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.


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