What to Do When the Car Air Conditioner Buzzes Upon Turning On?
2 Answers
Solutions for a buzzing car air conditioner upon turning on: 1. Check the belt tension. Sometimes a loose car belt can cause a squeaking noise. You should have the belt inspected at a repair shop and pay attention to belt maintenance, ensuring the tension is appropriate. 2. Squeaking when pressing the clutch. If the squeaking only occurs when pressing the clutch and disappears when releasing it, it indicates a damaged clutch release bearing, which should be repaired as soon as possible. 3. Check for foreign objects in the engine compartment. If the squeaking occasionally comes from the engine compartment, open the hood and carefully inspect for any foreign objects. Sometimes, blockages caused by foreign objects can lead to squeaking noises in the vehicle.
I've encountered the buzzing AC issue several times. This sound usually appears as soon as it's turned on, mostly due to worn fan bearings or compressor problems. In my own car, it was caused by poor fan rotation leading to noise, which isn't difficult to check. First, open the hood to locate the sound source. If it's coming from the front of the car, it might be loose fan blades or dust stuck in them; if the noise is from the compressor area, you'll need to check if the clutch is intact. Ignoring it can lead to reduced AC efficiency over time, poorer cooling performance, or even complete failure. For minor issues, replacing a bearing or adjusting the belt can solve the problem at a low cost; but if it involves compressor repair, the expense will be much higher. I recommend cleaning the filter and vents yourself first, and seeking professional diagnosis if necessary.
