The torque converter clutch comes into motion to mitigate the inherent inefficiency on the fluid coupling at bigger speeds. Release oil exiting through the turbine shaft forces the clutch off the quilt area. The two-path converter then has move when the discharge oil has separated the clutch from the quilt. https://rowanjmjgc.articlesblogger.com/56730026/how-much-you-need-to-expect-you-ll-pay-for-a-good-torque-converter-clutch