The torque converter clutch solenoid is usually energised (stuck on) which translates to the torque converter becoming often locked. The TP sensor indicates the throttle plate angle. If the driving force accelerates to broad-open throttle, the TCM disengages the TCC to downshift. The torque converter permits the motor to idle https://garrettnomjf.blogthisbiz.com/40803754/top-latest-five-torque-converter-clutch-urban-news