I generally propose you take away the torque converter from your transmission to diagnose it effectively. The TP sensor suggests the throttle plate angle. If the driver accelerates to huge-open up throttle, the TCM disengages the TCC to downshift. Keep in mind, in case you suspect a foul torque converter, https://torqueconverterclutch46778.blog5star.com/34461073/the-definitive-guide-to-torque-converter-clutch