Is there any abnormal noise after the car warm air is turned on?

Symptom description: There is a high possibility of abnormal noise in the engine compartment. Most people also judge the abnormal noise in the engine compartment according to the sound source, usually the harsh noise of metal or the noise of the wind whistling.

Solution: The abnormal sound of the engine indicates that the technical state of a certain mechanism of the engine has changed. The main reason is that some parts are worn or even improperly adjusted. Some abnormal sounds can indicate that the engine may be accidentally damaged, so when the engine has abnormal sounds, it should be repaired in time to prevent the fault from expanding.

Need to be reminded that if the engine is abnormal, most owners can't solve it by themselves, so it's best to send it to the factory for maintenance.

Extended data:

1, turn on the warm air as soon as the cold car starts.

Because of the weather, many car owners are used to turning on the heating system as soon as they get on the bus. In fact, such an operation is wrong. The engine temperature was too low when the vehicle was just started. Turning on the warm air will not only accelerate the temperature rise in the car, but will increase the burden on the engine and delay the normal temperature rise of the engine.

Moreover, because the warm air transfers the heat of the engine to the car, the engine temperature is very low when the car is cold, and turning on the warm air immediately will only "blow cold air".

2. When the water temperature indicator is at a low level, turn on the warm air.

Although some car owners know not to turn on the heater as soon as they start the car, it is not correct to turn on the heater when the temperature of the water tank is still very low after starting the car. This will not only not increase the temperature inside the car quickly, but also increase the burden on the engine and delay the normal increase of the engine temperature.

After the engine temperature pointer points to the middle position, turn on the heating air conditioner, and set the air circulation to external circulation, so that the cold air in the car can be discharged outside the car, wait for 2 to 3 minutes, and then set the air circulation to internal circulation.