What Are the Causes of Abnormal Noises in Car Air Conditioning?
2 Answers
Car air conditioning abnormal noises are caused by: 1. Loose or slipping air conditioning belt; 2. Compressor malfunction; 3. Foreign objects inside the blower or ventilation ducts. The solutions for car air conditioning abnormal noises are: 1. Replace the car air conditioning filter and remove any foreign objects; 2. Adjust the tightness of the compressor belt to increase friction or replace the belt; 3. Remove and inspect the compressor. The maintenance methods for car air conditioning are: 1. Regularly clean the surfaces of the condenser and evaporator; 2. Pay attention to the operation of the compressor; 3. Close the external circulation when there is a lot of dust in the air to reduce pollution of the air conditioning filter; 4. Regularly clean the air ducts and replace the air conditioning filter to maintain fresh air inside the car.
Having driven for over a decade, I can say that 80% of air conditioning noises are caused by small stones or debris stuck in the fan blades, resulting in squeaking sounds. Aging belts can also produce noise, especially after prolonged use in summer. The most troublesome is the metallic grinding sound from compressor wear, which needs immediate attention to avoid reduced cooling efficiency and increased fuel consumption. A hissing sound with unusual odors often indicates a Freon leak in the piping. Noises become more noticeable in traffic jams, affecting driving concentration. Regular cleaning of AC filters and lubrication can prevent minor issues from escalating into major repairs. These noises may also resonate with vehicle body components, accelerating wear on other parts.
