It could be a bad Wheel bearing, or more dangerous a tire's cords might be
coming undone! have your tires inspected and rebalanced, while jacked up
check bearings for noise and or excessive play. when you spin the wheel by
hand it should be dead silent.  also wiggle the tire when attached to the
bus, there should be no play.

good luck
johnny t

On Wed, 2 May 2001 11:59:16 -0500, Jenny Loerzel <jensmiles2@hotmail.com>
wrote:

>Hello Everyone,
>
>While driving my '87 Westy the last few days, I have noticed an unusual
>sound coming from the rear of the van.  It's kind of like a humming sound
>and I can feel a slight vibration in the front of the van.  It almost
sounds
>like the tires are rubbing but not quite.  It continues to do it even if
the
>accelerator is not being pressed down.  It doesn't do it, however, when the
>brakes are applied.  Any ideas?
>Thanks in advance for any help,
>Jenny Loerzel
>Karma Rose '87 Westy
>_________________________________________________________________
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