The engagement and disengagement with the lock-up clutch relies on the way the fluid enters the torque converter. The automatic transmission fluid can enter possibly through the front from the lock-up clutch or between the impeller and turbine, at the rear of the clutch. Failure of your TCC solenoid is https://torqueconverterclutch41739.blogrelation.com/40490667/helping-the-others-realize-the-advantages-of-torque-converter-clutch