What is torque converter clutch slip?
A TCC is implemented to control the slip between the pump and turbine of the torque converter, thereby increasing its energy transfer efficiency and increasing vehicle fuel economy. The strategy has been applied and demonstrated in various torque converters in both RWD and FWD GM transmissions.
What is TCC slip?
A torque converter clutch (TCC) is an important element of automatic transmissions because it affects fuel economy and driveability. To recover TCC slip, pressure to the TCC must be reduced significantly to overcome the effects of clutch material nonlinearities and hydraulic hysteresis.
What is the main symptom of torque converter clutch problems?
When the torque converter starts malfunctioning, you may feel shuddering and even slipping in overdrive. You usually notice your car shuddering because it feels like it’s vibrating. Your car will vibrate even when you’re not going very fast. The shuddering makes the car lag and is very noticeable.
What causes a torque converter to slip?
A torque converter can slip out of gear or delay a shift its fin or bearing is damaged. In the same vein, inadequate or excessive fluid in the transmission can cause the gears to perform in an unexpected manner. One of such is slippage which is evident in the car’s loss of acceleration and reduction in fuel economy.
Can a slipping torque converter wear out the transmission?
A slipping torque converter will wear out the transmission very quickly. In some cases, you may have temperature sensors that cause the transmission control unit light on your dashboard to flash, which indicates that your torque converter is slipping and overheating the transmission.
What happens if you disconnect the torque converter clutch?
But often simply disconnecting the clutch solenoid connector solved the shuddering or stalling condition. Here’s the problem with doing this. The torque converter clutch would no longer apply and the vehicle would get extremely poor fuel economy.
Where is the torque converter clutch solenoid circuit located?
At certain speeds, the torque converter clutch (located inside the converter) creates a mechanical connection between the engine and transmission. The control module operates the TCC via one or more solenoid valves. Applying the TCC improves fuel economy, reduces engine speed, and lowers the temperature of the transmission fluid.
How does a torque tracking clutch system work?
In an engine with torque tracking (also called follow-up) clutch system, the clutch is closed enough to transmit slightly more than the current engine torque and not the maximum possible clutch torque. This feature is only possible with an electronic clutch control system and has several benefits in terms of comfort and driveability.