What is the reason why the engine is still ringing after the car is turned off?

The cooling fan will automatically cool down.

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.

Matters needing attention of automobile engine

Engine maintenance is not only to maintain the engine in the regular maintenance cycle, but also to inspect and maintain the engine parts as much as possible after driving through special (such as wet and dusty) areas.

It is necessary to regularly remove the deposits in the fuel tank, remove the deposits in the fuel filter screen, and properly maintain the air filter, fuel tank and pipeline. When cleaning the engine fuel system, please use the special disassembly-free cleaner of the engine series.