supernova1972

The car is a 94 Formula with a 4l60e. On full throttle runs at the shift point it will just bounce off the rev limiter and not shift? Is this a computer problem or what?

RBS_97Z28

You might want to take it to a transmission shop and check for a shift solenoid. Mine did the same thing when I had 2 bad ones.

predator

well first thing would be to see if its commanding the shift if its not then there would be a problem there....if it commanding the shift then i would look at the solenoids

12SCNDZ

If it only does it on WOT shifts, it's most likely an internal transmission problem. They will do this when the transmission isn't capable of making the shift quick enough. We hear this complaint very much before we build them.
If you have any other questions, feel free to call me. 302-250-1202

Frank
CPT