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In message <email@example.com> WBITTRICH@aol.com writes:
> Right off the blocks I have a question: I just bought an '87 TQ with 140K.
> All is fine with the vehicle except for a slight rumble at city cruising
> speeds (25-40 MPH). At acceleration and braking it is not present.
Most likely a slightly mis-aligned prop shaft. The centre mounting should be
shimmed using a special jig to get the prop shaft exactly in line - at 140k the
odds are pretty good that someone has had the thing out and put it back
without re-aligning it. If you don't fix it, it'll just carry on rumbling for
the next 140k miles.
If you decide not to fix it - make sure you check the centre universal joint,
roughly under the centre of the car. Sometimes there's a grease nipple in the
centre of the universal joint.
> It sounds as though it's coming from the rear end.
All quattros are accomplished ventriloquists.
Committee Member, UK Audi [ur-]quattro Owners Club