Went to the track last night, made 1 pass, and everything was fine. Made a 2nd pass, and about halfway through 2nd gear, my SES light came on, and the tranny "short shifted" into 3rd(about 4500rpm). After I let off, and it shifts into 4th, the light goes off. But, when I come back in the return lane, it wouldn't shift out of 2nd..I let it sit for about an hour, and start it up, and the there's no light, and the tranny shifts fine.

Last time it did this, the codes that it flashed was code 21(TPS sensor), so I replaced b/c it had too high of voltage. I need help!! Code it be another sensor??? Could it be getting too hot in the burnout box, and going into "limp"mode?? (I have a 3200 stall,and a Perma cool tranny cooler, if that helps)