What happened when the pump truck switched the pumping state and the speed did not rise?

Transmission failure. If it is a gearbox, this is easier to judge. There is something wrong with the gearbox machine. If you can't step on the accelerator, the engine speed will suddenly increase by 2000 to 4000 rpm. Because its power is cut off, the engine suddenly has zero load and the speed will fluctuate. General engine problems include gearbox control system problems. The engine light will be on, and the fault light must have stored the fault, so we can read the fault with the diagnostic instrument.

2. Throat

3. The accelerator pedal

4. Brake priority system. Like the current car, it is also equipped with a brake priority system, that is, the brake pedal and the accelerator pedal are pressed at the same time, and the brake pedal takes priority and the accelerator will not respond. Let's check whether our foot pads are fixed. If the foot pad accidentally touches the brake pedal, it may touch a little, and there will be a brake signal, then the brake priority system may work.