[W126 Coupe] HELP! Car Salling!!!!!

[David G. Cole]

Have you taken the air slide valve (forgot its exact name at the moment)
off and cleaned it w/ carb cleaner? These tend to carbon up and start
sticking. And they can just go bad, mine had to be replaced when I got my
car because of it randomly dying at idle. Did not mention it before
because thought your car's problem was not idle related.

dgc



> do you remember where you found the computer and
> wiring harness. I will want to check that out as well
>
> I changed the fuel filter tonight. it did make some
> difference. here is what I found while driving it
> tonight. it goes well while driving, but when you stop
> it doesnt hold idle very well or at all. that is when
> it will stall. it tries to idle around 480-500 rpm. I
> believe that is too low to keep vacuum pressure. what
> could cause this? I did replace the over voltage
> protection relay.
>
> any ideas now? what should I look at to adjust the
> idle?
>
> thanks,
>
> David
> --- mbcoupes-bounces at mbcoupes.com
> <igatenby at optushome.com.au> wrote:
>>
>>
>> -----Original Message-----
>> From: mbcoupes-bounces at mbcoupes.com
> [mailto:mbcoupes-bounces at mbcoupes.com] I
>> had the same problem - swapped lots of parts between
> my 500SEC (which had
>> the problem) and my wife's 500SE.  In the end (after
> months of chasing the
>> problem) it turned out to be that small wiring
> harness that attaches to the
>> ignition computer - it had a wire that was broken
> inside the insulation.
>>
>> $15 at the wreckers' - problem solved.
>>
>> Ian
>>
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