Fluid Coupling: It allows the motor to run independently with the transmission, Therefore the auto can cease with no stalling the motor. Should the torque converter slips though driving, this can cause needless heating on the transmission fluid, which eventually may even develop into so incredibly hot that it boils. https://jasperyzwus.blog5star.com/34462118/torque-converter-clutch-things-to-know-before-you-buy