The torque converter will allow the engine to idle once the autos is stopped even though the transmission contains a gear engaged. Since the title suggests, the torque converter converts (amplifies) the enter torque on the motor into the next output torque. This specific aspect from the torque converter is https://torque-converter-clutch16046.vidublog.com/33011804/5-simple-statements-about-torque-converter-clutch-explained