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Re: Howling sound: need help

     Even though you  checked the wheel bearings, that sounds like a 
     possible cause. 
     When driving, does the noise diminish at all going around a curve or 
     turning a corner? If so, that would mean that is in fact a wheel 
     bearing. If not, I'm mistaken.

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Subject: Howling sound: need help
Author:  Vikram_Mittal@notes.pw.com at Internet
Date:    4/4/96 05:49 PM

I have this 1988 Audi 80 (2.0 liter engine). It has the 5 speed 
tranny.  Whenever,  I go over 40 mph I get this loud howling 
sound.  It becomes less after doing over 70 mph for an hour
but that maybe my imagination.
We checked the differential fluid level and that is ok.  Also,
on rotating the wheels, there is no sideways motion - I think that 
means that the bearings are ok. 
One symptom is that whever I engage gears (let out the clutch) 
I always hear a thump as if there is some slack.  Could it be 
that the differential has worn out ?? Please help as I do not 
want to get stranded on the highway or create more 
Best Regards,