What Are the Reasons for Loud Car Fan Noise in Hot Weather?

1 Answers
AlexisDella
08/27/25 8:10am
Loud car fan noise is caused by deformation of the car air conditioning fan blades or damage to the fan motor. Reasons for loud car fan noise: Dirty air filter, debris in the blower fan blades, wear of the clutch bearing in the air conditioning pump, loose screws due to vibration in the blower, collision of fan blades with other components, foreign objects entering the air ducts, wear or damage to the fan motor. Function of the car fan: The fan's role is to increase the airflow velocity through the radiator core, enhancing heat dissipation and accelerating water cooling. Car engine fans are categorized by structural principle into axial-flow fans and centrifugal fans; by driving method into mechanically driven and electrically driven. Modern car engines widely use electrically driven centrifugal fans.
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