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Old 11-12-2006, 02:31 AM   #1 (permalink)
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Date registered: Aug 2006
Vehicle: E230 - w124
Location: Belgium
Posts: 15
low rpm's at startup

Hi,

I 've put in a new heat gasket a month ago and since then I'm having some troubles when starting up the engine. Everytime I start it, the engine goes straight to 1000rpm's and then drops to 500-400 rpm's, the first 2 startups are mostly even a complete shutdown. If I drive around for a couple minutes the engine fixes itself and goes to 900-1000 rpm's stationary.

Got any idea's?

owyea, the whole reason I changed the heat gasket in the first place was because I had some troubles with cooling fluids that were boiling over everytime I put the engine out.
well, it didn't help, I still have the same problem.

thx on advance
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Old 11-12-2006, 03:33 AM   #2 (permalink)
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Date registered: Jun 2006
Location: Poland-poznan
Posts: 120
Hi
In my opiniom its something wrong with you inhection system.Some vaccums maybe wrong connected.
It takes blind air(do you understand it <<) from something .
Check all connection place in your injection, but iam affraid that you wouldnt see what caused it because it could be only a small leakiness in your intake.
So maybe you should go to mechanician that will be able to chec it.
Wish you luck
Mariusz.
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Old 11-12-2006, 11:32 AM   #3 (permalink)
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Date registered: Aug 2006
Vehicle: '87 260E, '97 Nissan VQ Cefiro
Location: Manila
Posts: 347
I agree check first your electrical & vacuum connections.
If everything's plugged-in, then check your ICV (idling control valve) or your Warm-Up regulator.
Or your MAF could just be dirty & needs some carb cleaner spraying.

Last edited by Inline6 : 11-12-2006 at 11:59 AM.
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Old 11-12-2006, 02:48 PM   #4 (permalink)
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Date registered: Aug 2006
Vehicle: E230 - w124
Location: Belgium
Posts: 15
owkay, gonna do that first thing tommorow thx,
btw.. if I took blind air wouldn't it stay like it is? I mean, now it stops after like a minute of driving, if it would be blind air wouldn't it be doin' like this all the time?
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Old 11-12-2006, 09:09 PM   #5 (permalink)
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Date registered: Aug 2006
Vehicle: '87 260E, '97 Nissan VQ Cefiro
Location: Manila
Posts: 347
Sorry but what do you mean by 'blind air'?

I would assume that your car has new or good condition fuel & air filters, spark plugs?
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Old 11-12-2006, 09:48 PM   #6 (permalink)
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Date registered: Oct 2002
Vehicle: Mercedes 28E 1993 (W124)
Location: New Plymouth, New Zealand
Posts: 77
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M102

Presuming your car has the earlier M102 engine it could be the OVP relay.

I have seen more than a few times this causeing a slow idle when cold and fast idle when hot. Idealy Cold idle is 1200RPM and hot is around 700 RPM.

This symptom can also be a result as mentioned above, a faulty ICV.
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