Mercedes-Benz 420SEL Problem Report
Mercedes-Benz 420SEL Incorrect Idle Speed Due to Stuck Idle Air Compensator
It is not uncommon for the idle air compensator to get stuck in one position, resulting in the engine idle speed (rpm) being too high or too low. Replacement of the failed compensator may be necessary to correct this concern.
when engine is running and shift to drive gear and pressthe acceleration the engine shut off - william wright
idles about 2000 rpm on hot engin in park and 900 rpm in dr - rustybonds
Hard starting when Engine Is cold. High idle 2000 rpm-900 rpm in drive - vinnyt
Sometimes idles to high. More often than not. Hard to crank after sitting awhile. - Visitor
Example: If I am going 25 MPH (as shown on speedometer) my actual speed is approximately 45 M...
car cuts off sometimes when idling and it is losing rpm
My Benz just had a new transmission installed and since then, the idle is way too high. This m...
Other than a defective motor, a bad switch or blower motor resistor assembly can cause an inope...