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Re: 1st-2nd vibration (archive)
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Posted by WH on March 11, 2001 at 11:01:45:

In Reply to: 1st-2nd vibration posted by Lee on March 10, 2001 at 23:24:21:


86 635 car vibrates at about 1800-2500 rpm in 1st and 2nd i do notnotice it in 3rd has new diff mount tires balanced . what about flex coupler on drive line how should i check? any info welcomed.

Check driveshaft Guibo and center bearing.

Replace Guibo if any cracks are evident, or if you've never done it.

For center bearing... see if there are any tears in the rubber isolator, if so replace.

You also might need U-joints on the driveshaft itself. To check you need to remove the driveshaft and see if it moves freely with not binding or "flat spots".

Most likely you may find many parts need replacing...

WH

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