ok guys heres the thing......sometimes when im driving....drag strip or on the highway....my tranny will get all crazy after racing and my SES light will come on.....soo when i slow down and start driving agian....no matter what its in Overdrive or drive.....the car wont shift intill 3000 rpms and when it does shift....it snaps your neck....

soo my bro hooked up his 8,000 dollar scan tool and well...it says there are no codes in the history of the computer....but heres the crazy thing....when ur on the tool...u can look to see whats going on with the motor....well it says like -40* coolant and tranny temp....and its in 3rd gear when its in park and he tps sensor is going crazy...soo i borrowed a new comp. and hooked that up....still does the same thing !!

soo idk....is it a ground wire maybe??? please all help is greatly appercaited!!!!

 

anybody?