Mechanics

ENGINE INCREASING AND DECREASING SP

1987 Mercedes Benz 300e

Engine Performance problem
1987 Mercedes Benz 300e 6 cyl Two Wheel Drive Automatic 145400 miles

When the car is cold then it starts and runs perfectly, but when is worm, after I start it, it starts to increase and decrease the speed of operation (the RPM are going up and down by itself). It happens only when is idling.
Can somebody tell my what is wrong with it?
Avatar
Vitaminenoi
May 18, 2009.



Check out the related content below while we wait for the question to be answered by a professional mechanic.