About 3 weeks ago I went offroading and it was raining and i was doing dounuts andf fullishly hittin the throttle into really high rpms...needless to say it cooked the transmission...

I bought a new tranny (automatic), and just had it installed, and went with my friends to watch them offroad. I went out in the mud a couple of times, but i was real soft on the car, and barely pushed it at all. I mostly jsut followed them and watched. After we left, my car changed into second gear really funny a couple of times, and was making weird noises. Then i turned it off, and let it cool for a bit and it was fine and i drove it on like a 30 minute drive to the party. I noticed the car began to change gears with little jerks, and when i push it into first gear, i have to hit the throttle pretty damn hard to get it moving. After i drive it around for about 15 miunutes straight, the overdrive off light starts flashing.....helppp!