What should I do if my TCC solenoid is sticking?
Won’t harm a thing. You just lose the lock up torque converter function which will reduce fuel mileage. If the TCC solenoid is sticking causing the engine to stall at idle, you might try this. Purchase a can of SeaFoam TransTune and add a half a can to the transmission fluid.
What happens to the solenoid on a torque converter?
When the ECM signal stops, the solenoid closes the valve and pressure is vented, causing the TCC to disengage. This lets the torque converter lock in “gear” or unlock out of “gear.”
What causes the torque converter to lock in gear?
When the TCC solenoid receives a signal from the engine control module (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. This lets the torque converter lock in “gear” or unlock out of “gear.”
What causes the torque convertor clutch to disengage?
There is a solenoid in your GM converter that causes the the torque convertor clutch (TCC) to engage and disengage. When the TCC solenoid receives a signal from the engine control module (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. This lets the torque converter lock in “gear” or unlock out of “gear.”
When the TCC solenoid receives a signal from the engine control module (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. This lets the torque converter lock in “gear” or unlock out of “gear.”
What happens when the TCC fails to disengage?
If the TCC fails to disengage when the vehicle comes to a stop, the engine will stall . Before attempting to diagnose converter clutch electrical problems, mechanical checks such as linkage adjustments and oil level should be performed and corrected as needed.
Can a bad solenoid cause a bad ECM?
Generally, if you unplug the TCC solenoid at the transmission and the symptoms go away, you have found the problem. Sometimes this can be misleading, because you don’t know for sure if the cause is a bad solenoid, dirt in the valve body, or a bad signal from the ECM.