The initial automotive application from the lock-up theory was Packard's Ultramatic transmission, introduced in 1949, which locked up the converter at cruising speeds, unlocking once the throttle was floored for brief acceleration or since the car slowed. Visual Inspection:  Begin with a primary Visible inspection. Try to find any indications https://deanklifc.loginblogin.com/41314833/torque-converter-clutch-an-overview