Im looking to find out the same thing. I know where it is in a wiring harness behind the air cleaner, but not on the transmission. I want to disable mine until I can get a valve body that puts out higher pressure. Seems the pressure line can be too low if you've moded your engine at low rpms.
Michael
It is in the plug on the driver side of the transmission that is behind the shift linkage.
If you have a torque converter lock all the time problem when hot replace solenoid under driver side cover of transmission .
The lock up clutch is inside the torque converter. The solenoid is on the valve body in the transmission. The wiring runs from the engine computer to the transmission.
The automatic has one for the lock up torque converter
the overdrive transmission in those trucks are 700R4 with lock up torque converter
If the car has an automatic transmission, then it might have lock up torque converter. If the torque converter is engaged while the engine is at idle, then the engine will stall. Bring the vehicle to reputable transmission repair facility and have the replace the torque converter clutch solenoid.
If yours is on constantly or won't come on there are several possibilities. There is a relay, usually inside the transmission, that controls the lock-up solenoid inside the torque converter. If the lock-up won't release, the problem is often that relay. The good part is, it's a lot less expensive than a transmission rebuild and if you can find a reputable transmission shop (that's the bad part, they're difficult to find) they will replace the faulty relay at a reasonable price. On the other hand, it can also be the torque converter, in which case the transmission has to come out and they'll need to replace the torque converter. Then you'll get the speech, "While it's out it's a good idea to..." If it WON'T lock up when going down the road, it can be a sensor, the relay or, yes, the torque converter.
It is behind the motor and in front of the transmission.
It can be the lock up on the torque converter not functioning properly. It can also be low of fluid. Check the transmission fluid level. If the fluid level is good, you need to seek professional help.
Transmission Lock-Up Control System Fault. Can be caused by:Low transmission fluid levelDirty transmission fluidFaulty torque converter cluth solenoid valveTorque converter clutch solenoid valve harness open or shortedTorque converter clutch solenoid valve circuit poor electrical connectionCan also be overheating torque converter due to insufficent flow to the torque converter release cirsuit.When the accelerator pedal is depressed (less than 2/8) in lock-up condition, the engine speed should not change abruptly. If there is a big jump in engine speed, there is no lock-up.
4 speed with a lock up torque converter
AnswerI am not finding a code PO740 in my bookFailed torque converter lock up clutch.
No it will not. Because it is a lock-up converter and the 350 turbo is not set up for a lock-up converter.