Turn off the engine, don't step on the accelerator, there is no idle speed.

This happens because the throttle idle regulator is damaged, in which case the throttle needs to be replaced. Throttle is a very important part of the engine, without which the engine can't work normally. The throttle valve is used to adjust the air intake of the engine, and it is installed on the intake pipe of the engine. When the driver steps on the accelerator pedal, the accelerator opening becomes larger. At this time, the amount of air entering the engine increases. After the sensor checks the amount of air added to the engine, it feeds back the signal to the ECU. After the ECU processes it, it adjusts the fuel injection system to increase the injection amount and increase the engine speed. When the engine is idling, if the throttle valve has an idling regulating valve, the throttle valve will keep a certain opening, so that a small amount of air will enter the engine to participate in combustion. Suppose the idle air control valve is damaged and the throttle cannot be opened. If you don't step on the gas pedal, it will turn off. At this time, air enters the engine and cannot participate in combustion. Of course, the engine is off. When replacing the throttle, be sure to choose the original accessories. Pure parts have better reliability and durability. And when you use the car, you must maintain it regularly. Usually maintenance is very important for the car, and timely maintenance can keep the car in good condition.