The pump is connected to the engine, and it pumps fluid (normal oil) in to the torque converter. The turbine is connected to the gearbox, and it spins once the fluid through the pump hits it. Your automobile is Typically inaudible when you find yourself sitting down in neutral gear. https://edwinaaxvt.blogdomago.com/32994123/not-known-factual-statements-about-filter-gearbox