Torque Converter

The torque converter (7902) for the transmission is a four-element converter. It contains the standard three elements (impeller, turbine and stator) for transmission of power and multiplication of torque, plus a torque converter clutch for increased fuel economy in second, third and fourth gears.

The operation of the torque converter components is as follows:

• Rotation of the converter cover and impeller set the fluid in motion.
• The turbine reacts to the fluid motion from the impeller, transferring rotation to the geartrain.
• The stator redirects fluid going back into the impeller, allowing for torque multiplication.

When applied, the torque converter clutch provides a mechanical link between the converter turbine and the engine, allowing for direct transfer of power from the engine to the geartrain.

The converter clutch pressure plate (7B066) is applied and released by fluid pressure, which is controlled by the powertrain control module (PCM) (12A650) through the torque converter clutch (TCC) solenoid in the main control valve body (7A100).

Torque Converter

Item	Part Number	Description
1	—	Torque Converter Cover (Part of 7902)
2	—	Turbine (Part of 7902)
3	—	Impeller (Part of 7902)
4	—	Stator (Part of 7902)
5	—	Torque Converter Clutch (Part of 7902)