Is that in any gear?  are you sure you have the fluid level correct?
Edward

At 05:56 AM 1/8/2004, you wrote:
>I have a 1990 van that is a real good runner.  I fear the transmission might
>be getting tired.  As I turn a corner going maybe mph and give it gas, it
>seems to slip and then grab.i will see the rpms jump a little and then
>settle back down............
>
>I have changed trans filter and fluid and same result exists.
>
>Any adjustments known that can fix this?
>
>Adam P
>Charleston,SC     Coburn, WV
>81  Westy "The Brick "
>70 Single Cab "Whitey"
>74 Beetle "Ol Yeller"
>73 Transporter (STILL at paint shop)
>1988 Vanagon Wolfsburg
>1976 Transporter (New CA bus)
>1974 412 "Goldmember"
>Used Vanagon Parts for sale (mostly aircooled)