Thanks for all the help guys. As suspected, I had a big time radiator failure that ruptured the core and punched through to the tranny heat exchanger. Mechanic said it was the firts time he had ever seen such a thing--especially in a Toyota. It took two cases of tranny fluid and many of gallons of water to flush both systems and get it all cleaned out.

All fixed now, but it cost me $750 in the end. If it weren't 10 degrees out when it happend, I would have done it myself, but sometimes you just gotta pay. Oh well...

cgardnerma