Noise on acceleration only is usually tranny related...If under light
throttle you gently swerve from side to side and the noise changes, it is
probably a wheel bearing, but the rears are sneaky and don't always show up
that way.
Driveshafts are usually vibrations and not the Rrr Rrr Rrr noise of a
bearing (like the sound effects??)
Occasionally an unner Cv will cause a growl..There again, they can be hard
to diagnose...
Good luck Paul
Daryl of AA Transaxle
(425) 788-4070
aatransaxle.com
----- Original Message -----
From: "Paul Guzyk" <paullist08@GUZYK.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, June 20, 2008 11:21 AM
Subject: Driveline noise under load ??

> I'm driving a friends 87 Westy, trying to figure out where driveline
> noise is coming from.
>
> There is a noise coming from right rear area whenever throttle is
> applied.  However, when I let off the gas, the noise goes away (or at
> least gets much much quieter).  Engine runs fine, noise must be
> coming fron transaxle, driveshafts, wheel bearing/brakes.
>
> Anyone seen these symptoms?  Where should I start looking?