Pump (Impeller): The driving member which is hooked up towards the engine. It spins with the engine and moves transmission fluid in the torque converter. In a torque converter there are no less than 3 rotating elements: the impeller, and that is mechanically pushed by the prime mover; the turbine, https://torque-converter-clutch20741.ltfblog.com/32938304/getting-my-torque-converter-clutch-to-work