What should I do if the engine speed of Haima 3 car turns on the air conditioner and there is no response? The throttle has also been checked, but the idle motor has not.

1. Generally, there is no idling fault in the engine, so the engine can be adjusted according to the idling requirements. Only when the engine speed reaches 1800r/min can it run stably, and when it is lower than 1800r/min, the engine will gradually turn off. Check the CO concentration adjustment screw to see if there is any abnormality. Check whether the ignition system and oil supply system are abnormal. Finally, the control current of the idle stabilizing valve is tested, and the standard value is 430±30mA, which is 30mA less. After replacing the idle speed stabilizing valve and readjusting the idle speed and CO speed regulating screws, the engine idle speed is stabilized at 800r/min, and the engine idle speed can be normal when it is restarted after flameout.

2. Analysis:

The function of the idle speed stabilizing valve is mainly to stabilize the idle speed. The damage of the idle speed stabilizing valve of this vehicle directly leads to the idle speed not being controlled by the control valve and unable to maintain normal work.