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#1 (permalink) Old 06-10-2009, 09:23 PM
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Thumping Sound

I have a 1990 535i . I am starting to get a thumping sound from under the car.
Not sure where. It doesn't hit anything under the car, just this sound at low speeds. Any suggestions?
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#2 (permalink) Old 06-11-2009, 09:45 AM
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is it when starting from a stop or accelerating? If the answer is yes, then most probably you have a bad driveshaft support bearing. Check your rubber flex disc or 'guibo' at the tranny end of the driveshaft (looks like a rubber donut). It it's a thump when shifting into reverse or forward it probably is the differential mount.
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#3 (permalink) Old 06-11-2009, 03:10 PM
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I was going to suggest letting grandma out of the trunk ....

"Take off eh " !!


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#4 (permalink) Old 06-11-2009, 09:53 PM
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Sound

Quote:
Originally Posted by jimoreno View Post
is it when starting from a stop or accelerating? If the answer is yes, then most probably you have a bad driveshaft support bearing. Check your rubber flex disc or 'guibo' at the tranny end of the driveshaft (looks like a rubber donut). It it's a thump when shifting into reverse or forward it probably is the differential mount.
iT HAPPENS WHEN GOING REAL SLOW LIKE GOING THRU A DRIVE THRU BANK ETC. AND ALSO FROM A START. Doesn't happen all the time, but is starting to happen more and more.
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#5 (permalink) Old 06-12-2009, 03:37 PM
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Check the control arms bushings ...
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