BenzWorld Junior Member
Date registered: May 2004
Vehicle: 1989 420SEL
Location: Houston, TX
Mentioned: 0 Post(s)
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1989 420 SEL - Acceleration problem when warm
This problem only occurs when my car has been parked for an hour or so with the engine warm. I start it, put it in gear, and the car hesitates and acts like it is about to stall before accelerating. I have a reputable trusted mechanic who ran all sorts of tests, replaced the oxygen sensor and all 8 new injectors, same problem. The scope / analyzer does not show anything wrong. He says that any rotor or spark plug issues would have showed up on the scope.
Any suggestions or advice is greatly appreciated.