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Re: bad driveshaft on V8?
In a message dated 6/22/98 12:42:48 PM Eastern Daylight Time,
> I get a thump in the back when my tranny shifts occasionally on my V8..
> could this be due to a bad u-joint on my driveshaft? I reached under my car
> and turned the shaft back and forth by hand.. there seems to be some play
> before the gears start turning on each end. Any place else I should check
> before digging into removing the exhaust and driveshaft for a looksee??
> How can one diagnose a bad CV joint? I get some vibration at highway
> Also, when I drive over a speedbump, I feel a bumping noise as if something
> is not quite tight. Any ideas on what might be the cause - it feels like it
> is in the front end somewhere but I have checked wheel bearings and tie rod
> ends. All seems ok.
I'd check for a loose/broken mounting bolt at the front of the REAR diff.
This happened to me years back, and it was just as you describe -- hit
anything before it started making this noise?