Driveshaft carrier bearing failing ?

[Joshua van Tol]

Is there perhaps a hole in the driveshaft? Could be filling up with 
water.
On Apr 5, 2005, at 2:14 PM, Dave C wrote:

> I just returned from a trip to Florida and Georgia in the 87 5ktq.
> The monsoon season was in full swing and I encountered a problem
> during hi-speed driving on roads with accumulated water ... the car
> would develop a violent shudder like an out of balance washing
> machine.  It seemed to be coming from under the middle of the car.
> Taking my foot off the accelerator or shifting in to neutral made no
> difference.  I'd coast to a stop, wait briefly, then go on and all
> would be normal for awhile.  Wet roads and normal rain
> were no problem, torrential downpours with inch deep water on the road
> would bring it on.
>
> My theory is that water was drenching the center carrier bearing which
> would begin to bind.  I'm not sure this makes sense, but it's the only
> thing I've come up with so far.  I jacked up the car and the bearing
> looks the same as it always did.  I greased the U-joint within the
> past month.
>
> There are 140k miles on the car and as far as I know there has never
> been any work done on the driveshaft.
>
> Do I need ...
> New carrier bearing?
> U-joint?
> Driveshaft alignment?
> Move to Arizona?
> - -
> Dave C.
> _______________________________________________
> quattro mailing list
> quattro at audifans.com
> http://www.audifans.com/mailman/listinfo/quattro