The very first automotive software of your lock-up basic principle was Packard's Ultramatic transmission, introduced in 1949, which locked up the converter at cruising speeds, unlocking if the throttle was floored for rapid acceleration or as the automobile slowed. The cost to exchange a nasty torque converter will vary significantly https://torque-converter-clutch42963.bloguerosa.com/32971483/an-unbiased-view-of-torque-converter-clutch