What causes a car to stall when idling

In the process of driving the vehicle, a variety of failures are inevitable. Car idling is a problem that many owners will encounter, then what is the reason for the car to stall when idling?

1. The water temperature Sensor is faulty. When the engine is idling, the electronic control system of the car will judge the thermal state of the engine according to the input signal of the water temperature sensor. If the water temperature sensor is faulty, the output signal will be inaccurate, resulting in idle stall.

2, idle control Valve caused by oil. The idle control valve can increase the intake volume, thereby increasing the engine's idle speed. If the idle control valve has oil, it will cause the engine to be unable to make accurate idle speed adjustment, and then stall.

3, air intake pipe leakage. If the intake pipe leaks, it will cause the air flow sensor to fail to measure the real intake volume, causing the car to idle unstable.

4. The fuel injection nozzle is blocked. The blockage of the fuel injection nozzle will affect the quantity and quality of the fuel injection, resulting in too thick or too thin gas mixture, and the car will appear unstable idle speed.
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