S (stall issue): With this level the turbine speed is zero and also the impeller is rotating; the efficiency in the stall position is minimum amount, all over 50%, which suggests that 50 percent of the facility coming with the engine is lost as a result of friction and dissipated https://torque-converter-clutch96173.thenerdsblog.com/40043872/the-greatest-guide-to-torque-converter-clutch