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Old 10-23-2001, 11:39 PM
intruder intruder is offline
Registered User
Join Date: Jul 1999
Location: Youngstown, OH
Posts: 150

Look near your belt tensioner. Does your car have a "little" shock absorber looking piece attached. My 1991 300E had the same symptoms and it turned out to be the dampner for the belt tensioner. Your best diagnostic tool will be a mechanics stethascope and touch it to everything until you hear the knocking the loudest.

Good luck

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