Pump (Impeller): The driving member that is connected into the engine. It spins With all the engine and moves transmission fluid throughout the torque converter. Now you could try to apply the travel gear. Pay attention diligently if you can listen to any signs of sounds from the torque converter. https://torqueconverterclutch05939.digitollblog.com/33794400/the-2-minute-rule-for-torque-converter-clutch