What does a lockup do?
Unlike other converters, Lockup Converters contain a clutch. When the clutch engages, it locks the engine to the transmission input shaft, providing a direct 1:1 drive ratio.
How much is a torque converter lockup solenoid?
The torque clutch prevents lockup at high speeds, and the solenoid for that clutch controls the fluid pressure of the clutch and causes it to open and close at the right time. If the solenoid needs to be replaced, then it may cost you between $85 and $400.
What is transmission lockup?
A lock-up control system is described for an automatic transmission including a torque converter coupled with the output portion on an engine, and a power transmitting gear arrangement coupled with the output portion of the torque converter and controlled to vary the transmitting gear ratio therein by gear ratio …
What is the difference between a lockup and non lockup torque converter?
If you are going to be towing, you want a lock-up torque converter. Towing will add heat to the transmission. A non-lock-up torque converter will add more heat. With a lock-up when you get to speed, the torque converter will lock-up, which creates a direct drive from engine to transmission.
How does automatic transmission lock-up work?
Torque converter lock-up is engaged through a solenoid mounted inside the transmission. When the solenoid is energized it redirects the fluid flow back through the input shaft to put pressure against the clutch assembly allowing it to engage with the front of the torque converter.
What is a bad solenoid?
Often, a bad starter solenoid will have the following signs. It indicates a situation where the holding coil of the solenoid keeps holding back, mostly as a result of not enough current reaching the solenoid. It can be caused by loose connections or corroded terminals.
What are the symptoms of a bad transmission solenoid?
Another common symptom of a problem with the downshift solenoid is a vehicle that experiences late downshifting. If the downshift solenoid fails or has an issue, the vehicle may experience late shifting when slowing down. The transmission may stay engaged in a higher gear for an extended period of time when it should be downshifting.
Where is the transmission shift solenoid located?
The Transmission shift solenoids are located inside the valve body of your automatic transmission. They are integrated into the valve body, and on some car models, you can see them without removing the valve body, while on others, you have to remove the valve body to reach them.
What is a torque converter solenoid?
The torque converter clutch solenoid is a common part that fails within the automatic transmission . The solenoid valve controls the fluid pressure of the hydraulic transmission, which enters the lock-up clutch. This can cause various symptoms, such as slipping, overheating, and rough acceleration.