I am getting a lot of tranny slippage just before shifting..

I have around 3000 rpm tranny slippage just before it shifts...
How do I fix this???

I have set on the PCM 120 psi all over.. What is causing this?

Does having the TPS set at 99.6 any problems???

its still WOT...

TCCDC is at 90.19 and torque press is at 120 psi as seen on datamaster...

any help would be appreciated...

 

HE said everything was checked prefectly.. and it only does it at WOT... that was what it seemed to me but... I thought this was programming related...

Anyways... I will make the suggestion..

 

The slippage only happens in WOT

 

Same problem here. New rebuilt and beefed up. Going into 3rd it slips about 300-400 rpms. It never hits the rev limiter. It chages hard on part throtle but has the problem at wot. On motor its not as bad but when spraying it slips the worst. I talked to my tranny guy and going to try different siloniods with bigger holes to let more fluid by. Good fluid level and it dosen't smell burnt. Let you know if it helps.