Vehicle came to shop with a slip on 2-3 shift onl low throttle only. We pull unit rebuilt and have same problme. I heard the TCM can cause this problem? It had no codes.
no codes
Problem
it only happens on crusing speeds I did a line press test and is tested good 70psi on idle and 180psi on stall. but when I road tested the car during the slipp press jump 20psi and then droped once it shifted. I monitor the pids during the road test and tps, speed sensors, never droped. I need help did I miss someting?