What about automatic transmission failure?

1. When the automatic transmission shifts too late, the upshift speed is obviously higher than the standard value, and the engine speed is higher before the upshift. You must use the accelerator pedal to upshift in advance (that is, release the accelerator pedal for a few seconds and then press it) in order to shift the automatic transmission to a high gear or a high gear. Troubleshooting: the throttle cable or throttle position sensor is incorrect; The throttle position sensor is damaged; High oil pressure in the main oil circuit or throttle valve; Forced downshift, switch short circuit; Computer or sensor failure. 2. The automatic transmission cannot be upshifted. When the vehicle is running, the automatic transmission cannot be upshifted to second gear or high speed; During driving, the automatic transmission can shift to 2nd gear, but it cannot shift to 3rd gear or overdrive gear. Troubleshooting: the throttle cable or throttle position sensor is incorrect; Vehicle speed sensor failure; Corresponding brake or clutch failure; The shift valve is stuck; The gear switch is faulty. This car can't run. No matter whether the shift control handle is in reverse or forward gear, the car can't run. The car can run a short distance after starting, but it can't run when it is a little hot. Troubleshooting: the oil pan of automatic transmission is damaged and the automatic transmission leaks oil; The connecting rod and zipper between the shift control handle and the rocker arm of the manual valve are loose, and the manual valve is kept in neutral and parking positions; The oil inlet screen of the oil pump is blocked; The oil pump is damaged.