S (stall point): During this place the turbine pace is zero along with the impeller is rotating; the effectiveness in the stall point is minimum, about 50%, which implies that 50 % of the ability coming through the engine is misplaced through friction and dissipated as warmth; at this stage https://trevorzjsdq.win-blog.com/14524361/torque-converter-clutch-no-further-a-mystery