Today, we are addressing torque converter failure in a 1991 Chevy truck. This issue is commonly observed in many General Motors products, regardless of the year of manufacture.
When the vehicle is put into drive or reverse, an unsettling whining noise is produced, which indicates a problem with the torque converter. The noise tends to fade out as the vehicle accelerates but reemerges when shifting gears.
To understand this issue better, let’s delve into the workings of a General Motors torque converter. The torque converter is equipped with a clutch at the back and spins on a bearing. The problematic component is the stator support bearings, which tend to get pitted and rough, causing the audible whining when the vehicle is engaged in gear.
As the vehicle is put into gear, the stator turbine assembly remains stationary while the torque converter, connected to the engine, starts turning. This relative motion puts the bearings in the stator support under strain, leading to the whining noise. However, as the vehicle accelerates, the two components start spinning together, reducing the strain on the bearings and causing the noise to fade.
If you encounter a similar whining noise in your vehicle, it is likely due to the bearings in the stator support. The torque converter can be rebuilt by replacing these bearings, clutch seals, and then welding the components back together. Alternatively, the entire torque converter can be replaced altogether.
Understanding torque converter failure is crucial in maintaining the performance of your vehicle. If you’re experiencing this issue, consider getting professional assistance to rectify the problem.
What is torque converter failure?
Torque converter failure is a common issue seen in many General Motors products. It is characterized by a whining noise when the vehicle is put in drive or reverse, which fades out as the vehicle takes off and reoccurs when shifting gears.
What causes torque converter failure?
Torque converter failure is often caused by bearings on the stator support becoming pitted and rough, leading to the whining noise. The bearings have to work less or not at all as the vehicle takes off, resulting in the noise fading out.
How can torque converter failure be fixed?
Torque converter failure can be fixed by rebuilding the converter, which involves replacing the bearings, clutch, and seals, and welding the parts back together. Alternatively, the entire torque converter can be replaced.