Date registered: Aug 2010
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1992 400E ASR light with rev problem
I have a 1992 400E with that started out with a slight rough idle. recently, sometimes when i start the car (when the engine is hot) the car revs up to 4500-5000 rpms then eventually returns to normal idle. when i put it in drive, without hitting the pedal, the car starts to rev up to about 3000 rpms. sometimes the asr light goes on when the car is hot too. any ideas would be great.