S (stall issue): in this position the turbine velocity is zero as well as impeller is rotating; the efficiency in the stall level is least, around fifty%, meaning that 50 percent of the power coming through the motor is missing by way of friction and dissipated as heat; at this https://titusnstsp.blogrenanda.com/40571837/5-simple-statements-about-torque-converter-clutch-explained