Unplugging the torque converter clutch will not harm the transmission or cause it to overheat. This is just a regular three speed automatic transmission with the TCC lock up feature. When the TCC solenoid is unplugged it reverts the transmission back into a regular automatic three speed. How long did we have three speed automatic transmissions before they added the TCC feature? 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.
Tester