Turn on the air conditioner in summer for 1-2 hours, and then turn off the engine.

There is something wrong with the air conditioner motor, which leads to overload and flameout. This kind of situation rarely happens, and it is usually an old car. 2. The throttle is dirty and needs cleaning, which is the most common. 3. The spark plug is broken, which leads to the lack of cylinder and the power can't keep up with the flameout. This is also common. 4. the ignition coil is broken, which is rare, and the classic car will appear. 5. The water temperature sensor is broken, which causes the ECU to start abnormally, and it is more likely that you cut off the oil when you slow down. You should pay attention to whether this fault is easy to occur after hot or cold car, and try to start after hot car.

Are you sure you turn on the air conditioner and then turn it off? If so, it is generally that the idle valve of the air conditioner is broken. Go to the repair shop and check it with the computer.

Idle speed control valve is powered by ignition switch. As long as the ignition switch is turned to the on position, the idle speed control valve is energized, and the engine computer controls its circuit to be grounded. This valve is used to adjust the idle speed when the working parameters of the engine deviate from the normal value. Idle speed is regulated by controlling the amount of air bypassing the throttle body. After the engine is started, the idle control valve is opened for a period of time, and the air intake increases, which increases the idle speed of the engine by about 150r/min-300r/min. When the engine coolant temperature is low, the idle speed control valve is opened to obtain a suitable fast idle speed. The engine computer controls the position of the plunger of the idle control valve by changing the signal intensity sent to the idle control valve according to different coolant temperatures.