What causes a transmission pump to go bad?
What causes a transmission pump to go bad? Low fluid is one of the most common causes of problems for transmission oil pumps. Without a sufficient amount of transmission fluid, the transmission oil pump will not have anything to pump and can overheat or burn up. How does an automatic transmission pump work in a car? As the engine runs, the torque converter (which is bolted to the flexplate/flywheel) spins. Part of the converter has a notched extension which engages with the inner ring gear on the pump which spins it and causes the pressure difference across the pump thus...