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#1
08-13-2004, 12:12 PM
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If you can hear the air-pump spinning, I would definitely check all the vaccuum lines and their rubber connectors.
I was getting this same symptom and code on our 1993 500E (same engine & emissions) and when I removed the vaccuum line to the air-pump (hard to reach and see) and the rubber elbow connector had a tear in it. I purchased a bunch of them (cheap) and replaced all the rubber connectors I could find due to the extreme heat and age these pieces are under. No more CHECK ENGINE. :-) neil 1988 E36T AMG 1993 500E 
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