What Causes the Belt to Squeal When the Car Air Conditioner is Turned On?
3 Answers
Car air conditioner causes the belt to squeal may be due to insufficient tension of the compressor belt or issues with the compressor's clutch. Below is relevant information about car air conditioners: 1. Introduction: The car air conditioning device (air-conditioning-device), referred to as car air conditioning. 2. Function: It is used to adjust and control the temperature, humidity, air cleanliness, and air flow inside the car compartment to the optimal state, providing passengers with a comfortable riding environment, reducing travel fatigue, creating good working conditions for the driver, and serving as an important ventilation device for ensuring safe driving. 3. Composition: Generally includes refrigeration devices, heating devices, and ventilation devices. This combined device makes full use of the limited space inside the car, has a simple structure, is easy to operate, and is a popular modern car air conditioning system internationally.
I've been driving for over a decade, and when the AC kicks in, the belt starts squealing. It's most likely because the belt is loose or severely worn. Over time, aging makes it unable to handle the extra load from the AC. If the tensioner is stuck or fails, it can't maintain the belt's tightness, leading to slipping and noise. Worn pulley bearings or excessive dust can also increase friction noise. I remember last time my car was making terrible noises, and upon inspection, I found the belt edges were cracked. I quickly replaced it with a new one, and the noise stopped. Ignoring such issues could mean the belt might snap one day, leaving you without AC cooling and even preventing the fan from turning, seriously affecting driving safety. I usually check the belt's condition and tension every few months when washing the car, addressing any problems early on.
The car's air conditioning belt makes an annoying noise when turned on, probably because the belt has become too loose or worn thin over time. When the air conditioning is turned on, the increased force causes it to slip and make noise. The tensioner might be rusted or broken, unable to tighten the belt properly. Sometimes, the pulley doesn't spin smoothly due to dirt buildup, causing increased friction. If left unrepaired, not only is the noise irritating, but a cracked belt can disable the air conditioning and even cause the headlights to flicker, which is quite dangerous. My husband had the same issue last time, and it was fixed by adjusting the belt position at the auto repair shop. It's recommended to listen for any unusual sounds before driving and visit a professional shop immediately if any are heard—don't skimp on repairs to avoid bigger problems.
