What Is The Reason For The Loud Noise Of Car Air Conditioning?

There may be several reasons for the loud noise of car air conditioning:
1. Dirty or stuck throttle valve: After the air conditioner is started, the compressor works and is driven by the engine. Therefore, turning on the air conditioner will increase the engine load, and it is necessary to increase the throttle opening to enhance the intake volume. If the throttle valve accumulates carbon or gets stuck, it can cause engine vibration and abnormal noise, especially when the air conditioning is turned on. To solve this problem, it is necessary to clean and adjust the throttle valve.
2. Compressor electromagnetic clutch failure: The compressor often switches from low speed to high speed under high load, requiring extremely high requirements for the electromagnetic clutch. Electromagnetic clutches often come into contact with rainwater and soil, which can easily cause bearing damage and generate noise. At this time, it is necessary to go to the repair shop for repairs.
3. Improper tightness of compressor drive belt: The compressor drive belt may be too tight or too loose, which may affect the service life of the electromagnetic clutch. If the transmission belt is too loose, the electromagnetic clutch is prone to slipping; If the drive belt is too tight, it will increase the load on the electromagnetic clutch. Therefore, it is necessary to adjust the tightness of the belt.
4. Compressor lacks lubricating oil: If the compressor lacks lubricating oil or is used improperly, it may cause wear and tear and scrap of the compressor. Therefore, when using air conditioning, the following precautions should be taken:
1) Within a short period of time after entering the car, windows should be opened or external circulation facilities should be activated to introduce fresh air.
2) When using the air conditioner for a long time, avoid using it for a long time with the doors and windows tightly closed, and never sleep or rest in the car.
3) In areas with severe traffic congestion, the air conditioning in the car should be temporarily set to self circulating mode, and vehicles with windows should temporarily close their windows.
4) When using the air conditioning heater, adopt the ventilation mode inside and outside the car, and try to avoid using the self circulating mode inside the car for a long time.