The torque converter clutch solenoid is always energised (stuck on) which translates in to the torque converter remaining usually locked. If the clutch is disengaged, the torque converter enables the engine to rotate without having stalling. While the vehicle is slowing and approaching a end, the TCC's application is undesirable. https://torque-converter-clutch29639.blogginaway.com/34892424/torque-converter-clutch-secrets