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Old 04-14-2008, 03:05 AM
Hammer
 
Join Date: Apr 2008
Posts: 1
'88 300ce engine dies while idling

Hi all,

I have a 88 300ce with about 100k on it. Recently the car started having problems starting as well as maintaining an idle. I had the car die on me in stopped traffic as well as in the mornings. Here is where I'm at:

It has trouble starting, engine runs for a couple of seconds at most, then dies.
It runs and drives however, when stopped, the idle descends slowly until it dies. By putting the car in neutral and giving it gas, this seems to fix the problem temporarily.
It is not an ambient temperature problem, I've had trouble starting in warm and cold weather.
It is not the spark-plugs, I just replaced them with Bosch Platinum 2 Plugs.

That being said (and after researching a tiny bit), I've narrowed it down to the fuel pump relay, fuel pump, fuel filter, oxygen sensor, engine coolant temperature (ECT) sensor. Please feel free to comment on what you believe the problem is, and if you've remedied this before.

Thanks, Paul

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  #2  
Old 04-14-2008, 08:33 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
You might try searching that type of problem.

The most common problems that cause that problem are....the idle valve itself, the idle contact switch, the de-cel shut-off switch, the air flow position sensor, & the hall-effect speed sensor.
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  #3  
Old 04-14-2008, 02:49 PM
Registered User
 
Join Date: Sep 2003
Location: France
Posts: 491
Quote:
Originally Posted by M.B.DOC View Post
You might try searching that type of problem.

The most common problems that cause that problem are....the idle valve itself, the idle contact switch, the de-cel shut-off switch, the air flow position sensor, & the hall-effect speed sensor.
Thanks M.B.DOC I would like to know where is located the hall effect sensor and how to test it?

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