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Old 09-09-2001, 09:38 AM
John Plut John Plut is offline
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Join Date: Apr 2001
Location: Joliet Illinois
Posts: 309
Driveshaft Noise

Based on your description, I would suspect the drive shaft center support bearing is dry. I had the same problem on a couple Volvo's I owned and was able to confirm it by injecting some grease into the bearing. I'm not sure if the same test can be done on a Mercedes. I used a grease gun with an injection needle and penetrated the rubber seal on one side of the bearing. If the noise goes away, you have found the problem.
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