1989 420 SEL - Acceleration problem when warm - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 05-30-2004, 12:25 PM Thread Starter
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Date registered: May 2004
Vehicle: 1989 420SEL
Location: Houston, TX
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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.
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post #2 of 2 (permalink) Old 05-31-2004, 02:37 AM
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Date registered: Aug 2002
Vehicle: '90 560SEL, V8 Landcruiser, Toyota S/Wagon
Location: Christchurch, New Zealand
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Your car is a W126 model, go to the W126 forum....

....and ask questions about your car. I personally can't help,but heaps of guys on the W126 forum will be only too happy to assist.
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