Sean,

Are you parking on an angle?  Mine was parked on an 11 degree angle and would
do this too.  I ask an inlaw who rebuilds xsmn.  He said that the oil in the
torque converter can on some xsmns leak back into the xsmn pan, when the
vehicle isn't parked on relatively level ground.  He said that the momentary
"slippage" occurs while the xsmn "refills the torque converter.

This may not be your problem.  But if you park on an angle I would consider
changing your location and see if the problem goes away.

Sincererly,

Mark Keller
91 Cara WLE "Lazarus"

Sean Birkner wrote:

> Hey all,
>      My '90 V'gon (w/auto tranny) has been having a problem lately. After it
> has been sitting for a while (esp. overnight) when I put it in Drive or
> reverse, take the parking brake off, and put my foot on the gas, the revs go
> up, but thevan hardly moves. If it was a stick, I'd say it was a slipping
> clutch, but I don't know much about the inner workings of auto trannies. The
> tranny fluid was drained and replaced about 4k miles ago. I will be grateful
> for any insights.
>
> Sean B.
> '90 V'gon, "Happy Bus"