With the 3-passage torque converter, two passages are useful for transmission oil (ATF) flow with the torque converter and for clutch cooling, when the 3rd passage is employed independently to regulate the lock and unlock from the clutch. In case the torque converter is faulty, it might produce surprising pressures https://torque-converter-clutch52962.designertoblog.com/65529827/torque-converter-clutch-secrets