1992 400E ASR light with rev problem - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 08-12-2010, 11:06 PM Thread Starter
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1992 400E ASR light with rev problem

hey guys

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.
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post #2 of 2 (permalink) Old 08-13-2010, 07:16 AM
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Read the fault codes on the 38 pin connector. The thread should be over in the 124 forum.
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