The torque converter clutch solenoid is often energised (stuck on) which translates into the torque converter becoming usually locked. When the velocity difference between the impeller and turbine isn't much too significant, the torque converter clutch is closed plus the connection engine to transmission is direct, without any torque converter https://brooksfoqrs.liberty-blog.com/34376847/the-smart-trick-of-torque-converter-clutch-that-nobody-is-discussing