[W126 Coupe] Is this possible?

[Kivendren Moodliyar]

Sometimes my 1983 380 SEC just dies out when in traffic. Then I start it up
again then once engage D she cuts out... Maybe after 10 attempts she starts
up again. Then engages in Drive and drives fine. 

Question: Is the Idle Contol Valve the only thing that controls the
idling???? Idling is a bit high, is it possible that non-merc parts like HT
leads could cause idling problems ?? 

 

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From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Shayegan, Richard
Sent: 03 July 2006 09:30 PM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Is this possible?

 

Well, I don't really have to, but I do if I want max power. Sure if I leave
it at the setting the mechanic puts it at, it's fine in the summer and in
the winter, but I found using my g-timer that I can make significant gains
in the winter by richening it up a good bit, and by leaning it out in the
summer I can GREATLY cut back on the power loss caused by the higher temp
air.

 

Also Dan, remember, I'm running the mechanical pre-1986 injection (the only
think electronic is the idle control valve), not the electronic injection
CIS-E of 1986+

 

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From: mbcoupes-bounces at mbcoupes.com on behalf of Dan Landiss
Sent: Mon 7/3/2006 1:56 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Is this possible?

Shayegan, Richard wrote:
> I had the signs of a vacuum leak (with foot on brake, at idle, in D, the
economy gauge was nowhere near being pegged, rough idle), but I also had the
smell of a rich fuel mixture. So I fixed the mixture (lambda was still in my
winter weather setting) and the apparent vacuum leak went away. Is that
possible? It just seems too easy.
>  

If you have to make adjustments for the weather, your system is
operating open loop (no control). Find out what control element has
failed, fix that, and all will be well.

--

  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Thinking is what a great many people think they are doing when
  they are merely rearranging their prejudices.  --William James
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



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