What Causes the Hissing Sound in a Car Compressor?

[PrestonRose]

Here are the specific reasons for abnormal noise in a car compressor: 1. Electromagnetic clutch contamination: Due to the electromagnetic clutch's proximity to the ground, long-term driving can cause it to accumulate sewage or mud, leading to internal bearing damage and resulting in abnormal noise. 2. Loose drive belt: The car air conditioning compressor has high operational demands on the electromagnetic clutch. A loose drive belt increases the load on the electromagnetic clutch, making it prone to damage, and in severe cases, can cause the compressor to burn out. 3. Repeated engagement of the electromagnetic clutch: Repeated engagement of the electromagnetic clutch leads to insufficient generator output, causing the compressor to operate with inadequate voltage, which triggers abnormal noise. 4. Lack of lubricating oil: Insufficient lubricating oil inside the compressor. After prolonged use, the compressor should be appropriately lubricated to avoid abnormal noise or failure due to friction.