What is the TCC on a transmission?
The Transmission / Transaxle Converter Clutch (TCC) System uses a solenoid operated valve in the automatic transmission to couple the engine flywheel to the output shaft of the transmission/transaxle through the torque converter. This reduces the slippage losses in the converter, which increases fuel economy.
What causes the TCC to engage and disengage?
The TCC solenoid is what actually causes the TCC to engage and disengage. When the TCC solenoid receives a signal from the ECM, it opens a passage in the valve body and hydraulic fluid applies the TCC. When the ECM signal stops, the solenoid closes the valve and pressure is vented causing the TCC to disengage.
What happens when you put the TCC on a car?
While the vehicle is slowing and approaching a stop, the TCC’s application is undesirable. Like the clutch on a manual transmission, it causes the vehicle to stall. The clutch plate contains a spring and hydraulically controlled pistons.
When does the TCM disengage the torque converter?
The TCM delays the engagement of the TCC until the engine reaches a preset temperature. The MAF sensor monitors the volume of air passing through the air tube. The TCM disengages the TCC while the engine is accelerating. Most transmissions disengage the TCC during deceleration to prevent high emissions.
What does TCC stand for in education category?
TCC earned … Partnerships play a critical role in educational program continuity and effectiveness. TCC’s invisible backbone maintains operations while building bridges to the future.
The TCC solenoid is what actually causes the TCC to engage and disengage. When the TCC solenoid receives a signal from the ECM, it opens a passage in the valve body and hydraulic fluid applies the TCC. When the ECM signal stops, the solenoid closes the valve and pressure is vented causing the TCC to disengage.
What happens if you disconnect the TCC on a transmissin?
Transman says that if you disconnect the TCC you will cause the transmissin to overheat, due to the constant slipping of the converter. I have never bought that assunption and the gas mileage will not suffer much because the converter doesn’t lock up anyway until you reach cruising speed, and most cars would perform better if it didn’t.
While the vehicle is slowing and approaching a stop, the TCC’s application is undesirable. Like the clutch on a manual transmission, it causes the vehicle to stall. The clutch plate contains a spring and hydraulically controlled pistons.
What happens if I unplug the TCC solenoid?
Those transmissions never overheated because they didn’t have the TCC feature. When the SeaFoam didn’t free up the TCC solenoid, I would unplug the TCC solenoid to prevent the stalling problem. And people drove their vehicles for years with the TCC solenoid unplugged with no tranny problems.