Torque Converter

The torque converter is. a fluid coupling, which allows the engine to spin independently of the transmission yet connects them together as needed It is an assembly that consists of an impeller (pump), turbine, stator and lock-up clutch, which uses automatic transmission fluid (ATF) to transmit engine power to the input shaft (mainshaft), and acts as a flywheel to help the engine run smoothly During certain conditions the lock-up clutch is engaged by the PCM to mechanically connect the engine's crankshaft with the input shaft (mainshaft) which improves fuel economy Around the outside of the torque converter housing is a ring gear which meshes with the starter ring gear, used by the starter to start the engine