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Looking for some expertise. 1990 740GLE 155,000 miles
When starting from a stop there is a thumping noise that sounds like it is coming form the driveshaft area. If you place your hand on the driveline tunnel in the rear seat a vibration can be felt. Remedies tried so far:
- hangar bearing replacement - no change
- transmission mount replaced - no change
- u-joints inspected and greased - no change
- differential oil topped off - no change
Any additional areas to check would be appreciated.
Thanks.
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