Idle Speed - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 12-31-2010, 02:26 PM Thread Starter
BenzWorld Member
Date registered: Aug 2010
Vehicle: 190E 8v 2.3 Mercedes Benz Make 1987
Location: Venezuela
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(Thread Starter)
Idle Speed

Hi Forum, i've a MB E190 year 1987. I just repaired the air conditioner, but i brought a problem when it was installed.

When i put on start the air conditioner, the idle speed of the car drops near 800 - 900 rpm. Analyzing the problem, i think it is the electric fan that also starts with the air conditioner that "helps" the idle speed to going so down.

I remove all the pieces and the air filter in order to adjust the idle speed, but, when i put it just on 1000 rpm with the AC starting, when i shut it off (the AC) the rpm goes up to 1500 rpm and not to 1200-1300 that is the "ideal" idle speed.

I would like to know if there is any valve or do i have to do something else in order to push up the rpm to 1200-1300 when the AC is running. I think i'm missing something else that pulls the accelerator cable

Thanks in advance, Reynaldo
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