The torque converter clutch solenoid is often energised (trapped on) which interprets in the torque converter getting constantly locked. The TP sensor implies the throttle plate angle. If the driving force accelerates to large-open throttle, the TCM disengages the TCC to downshift. The torque converter lets the engine to idle https://torque-converter-clutch20740.bloggazza.com/33005021/how-much-you-need-to-expect-you-ll-pay-for-a-good-torque-converter-clutch