What are the reasons for a sudden loud noise from the car fan?

1 Answers
ChristopherDella
07/30/25 8:04am
Reasons for a sudden loud noise from the car fan: 1. The blades of the exhaust fan inside the air conditioning system are deformed, and it is recommended to replace the exhaust fan. 2. The motor of the exhaust fan inside the air conditioning system is damaged, and it is recommended to replace the exhaust fan. 3. There are many impurities inside the air conditioning system, and it is recommended to clean the air conditioning system. Here is some additional information: Car radiator: The car radiator consists of three parts: the inlet chamber, the outlet chamber, and the radiator core. The coolant flows inside the radiator core, while air passes outside the radiator. The hot coolant cools down as it dissipates heat to the air, and the cold air heats up as it absorbs the heat dissipated by the coolant.
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