Service Torque Converter Procedures

Torque converters help the engine multiply power.

A car's engine needs a pathway, as well as a power amplifier, to move torque from the engine to the transmission, which propels a vehicle forward. A torque converter is the device that provides this.

Identification

The torque converter is situated between the engine and transmission. It functions as a multiplier for the power generated from the engine to the motion of the transmission. It also helps muffle vibration from the drivetrain and engine components.

Features

The torque converter is a completely sealed assembly, which does not allow for any maintenance or servicing. But there is a way to test it called a stall test. Turn the car on and make sure the parking brake is engaged, as well as securing the wheels by chocking them. Press both the brake and accelerator pedal down together and see what RPM the car reaches. Check the typical RPM the vehicle usually achieves with the vehicle manufacturer. If it is lower than mandated, the torque converter may be slipping.

Warning

This stall test tends to put strain on the transmission. It is recommended to only perform this test in five second intervals.

References

• Auto Shop 101: Torque Converter
• AA1 Car: Automatic Transmission Repair & Replace