What is the reason why the engine will whir for a while after the car is turned off? ,

It is not the engine itself that makes a whirring sound after the flameout, but the cooling fan of the engine water tank.

In order to continue to heat the engine after the car is turned off, the cooling system of the engine will work for a period of time, which is good for the engine. The water-cooled engine of a car has a radiator, which is located in the front of the car.

Causes of starting and stalling of cold car:

1, oil problem, which is often encountered by everyone in automobile maintenance, is also the easiest to check up. Change the oil model or try to refuel somewhere else.

2. Too much carbon deposit on the accelerator is also the main reason for the unstable idle speed and flameout of the car. Go to a professional repair shop or 4S shop to clean the throttle.

3, gasoline pump pressure is low or fault is easy to produce oil, thus causing a fire.

4, because the vehicle has been parked for a long time, the engine oil is sticky and the car is turned off. This phenomenon is a big problem, and it can be warmed up after the fire.

Working principle of cooling fan

When the engine temperature is too high, even if the car is turned off and the car key is removed from the car, its cooling system will automatically start to cool the engine system. The reason for the whirring is that the electronic fan runs at high speed, which is a normal phenomenon. After the engine system temperature drops, the cooling system will automatically stop working, usually for 3 ~ 5 minutes.