What Causes Noise When the Car Air Conditioning is Turned On?
1 Answers
Car air conditioning system noises can be categorized based on different sounds: 1. Metal friction sound caused by the engagement of the compressor electromagnetic clutch; 2. Squeaking sound due to excessive force on the air conditioning belt, both of which occur only when accelerating with the air conditioning on; 3. Malfunction of the electromagnetic clutch itself. Solutions: If there is a lack of refrigerant, first recover the refrigerant from the air conditioning system, evacuate the system, add sufficient refrigerant oil, then recharge with refrigerant, and run the car with the air conditioning on for a while to allow the refrigerant oil to circulate fully in the system. If the friction is severe, the compressor may also need to be replaced.