What causes the squeaking noise when the Mazda 6 air conditioner is turned on?

1 Answers
VanMichael
07/29/25 8:47pm
The causes of abnormal noises in car air conditioners are as follows: 1. Noise in the air conditioning ducts: The air filter has not been replaced for a long time, or there are foreign objects such as leaves in the ducts. 2. Noise from the air conditioning compressor: Poor heat dissipation or blocked pipes can cause abnormal noise from the compressor. When there is a lack of refrigerant, the internal pistons of the compressor do not receive sufficient lubrication, resulting in metal friction sounds under the high pressure of the refrigerant. Excessive internal pressure in the compressor reduces its service life and should be addressed immediately. 3. Engine issues: Abnormal noise caused by faulty bearings in the generator or the tensioner pulley of the air conditioning belt, or the loss of the tensioner's automatic adjustment function for the belt.
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