S (stall issue): Within this issue the turbine speed is zero and the impeller is rotating; the performance within the stall place is minimal, about 50%, which means that half of the power coming through the motor is dropped by means of friction and dissipated as heat; at this time https://laneyyxvr.ampedpages.com/5-simple-statements-about-torque-converter-clutch-explained-60952824