The TP sensor signifies the throttle plate angle. If the motive force accelerates to wide-open up throttle, the TCM disengages the TCC to downshift. Listen for Strange Noises:  Spend near attention to any uncommon Appears coming from the transmission place, especially through acceleration or deceleration.  Whining, clunking, or rattling noises  https://franciscoggecy.popup-blog.com/33070974/the-smart-trick-of-torque-converter-clutch-that-nobody-is-discussing