S (stall position): During this position the turbine speed is zero as well as impeller is rotating; the efficiency inside the stall stage is minimum amount, all-around 50%, which implies that half of the ability coming in the motor is missing by way of friction and dissipated as warmth; at https://elliotnwacc.thelateblog.com/34747802/the-best-side-of-torque-converter-clutch