Try to get someone to swap driving with you so you can compare notes
and decide on which side it is coming from. So this in a straight line
and when turning circles (both directions) in an empty parking lot.

IF it's a CV it should be louder driving one direction as opposed to
the other. In my experience a failing CV tends to make clicking,
clacking or clunking sounds.

My first thought would be something to do with the rear brakes if it's
a scraping sound. i.e. something to do with the brake hardware
dragging or rubbing on the brake drum.

Any difference when brakes applied?

When you determine which side it's coming from, jack up that side and
turn the wheel by hand and listen.

Cheers,

Neil.

On 1/25/08, David M <covrambles@yahoo.com> wrote:
> I just detected a slight scraping sound from the rear
> of my Vanagon. It only occurs in motion and is
> quickens and slows with motion. How can I find out
> what it is. Could it be wheel bearings or CV joints?
> How to tell?
>
> Thanks,
>
> - David, 1987 Wolfsburg, automatic
>
>
>
>
>
>
>       ____________________________________________________________________________________
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--
Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco"
http://web.mac.com/tubaneil

Engine swap beginings: http://tubaneil.googlepages.com/