The commanded throttle opening is different from the position opening.

1, idle switch short circuit or open circuit.

2. Inappropriate installation and adjustment of the throttle position sensor causes the idle switch not to be turned off when the throttle is fully closed, or the idle switch is still turned off when the throttle has a certain opening.

3. The sliding contact of the linear variable resistor is not in good contact, and the output signal of the throttle position sensor is interrupted intermittently during the process of the throttle valve from fully closed to fully open. Throttle is a controllable valve that controls air to enter the engine. After the air enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, and the combustion is successful.