Check your fluid level.

If too much is in there, it can cause a *syphoning* effect once the fluid warms up.
Fluid expands, and has nowhere to go.

Might be leaking from the shifter linkage. Could be loose.

Just a couple of things to check.

-Dano-

~~~The more People I meet, the more I like My Dog..~~~

-96' Tacoma 3.4 4x4 5 Speed, Trueflow intake+Deckplate, 2.5 inch Magnaflow Cat-back,OME 881's, and some extra-leaves in the rear..
-68' Chevelle Malibu..Stage one of Restoration: *Collecting funds* <img src="/forums/images/graemlins/smile.gif" alt="" />