What Causes the Abnormal Noise When Accelerating After Turning on the Air Conditioning?

[EthanRose]

It may be caused by the loosening of the bearing inside the tensioner pulley driven by the engine due to wear and aging. Below is relevant information about car air conditioning: 1. Introduction: Car air conditioning refers to the air conditioning device installed in a car. 2. Function: It can cool, heat, ventilate, and purify the air inside the cabin, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety. The air conditioning system has become one of the indicators to measure whether a car is fully equipped. 3. Components: It generally includes a refrigeration device, heating device, and ventilation device. This combined system makes full use of the limited space inside the car, featuring a simple structure and easy operation, making it a popular modern car air conditioning system internationally.

[ZacharyLee]

After turning on the AC and stepping on the accelerator, there's an abnormal noise. I've thought about this issue before. When the AC is on, the compressor starts and increases the engine load. If the belt is loose or worn, it can easily slip and produce a squealing sound when accelerating. It could also be due to worn bearings or clutch in the compressor, which makes more noise under heavy load. From my experience, first check the drive belt under the hood to see if it's loose or cracked; if the tensioner loses its elasticity, it can also cause abnormal noise. Don't overlook resonance issues with the fan or other components. For safety, take it to a professional repair shop for diagnosis as soon as possible to avoid turning a small problem into a costly major repair. Regular car maintenance and checking the AC system can prevent such troubles.

[SpencerMarie]

I've encountered similar situations several times during my more than ten years of driving. The strange noise when stepping on the accelerator after turning on the air conditioning is particularly annoying. Most of the time, it's due to the aging and loosening of the drive belt, causing the belt to slip or produce friction noise from worn edges when accelerating. When the compressor is working under heavy load, the fan bearings may also resonate. Once, my car made noise for a long time, and it turned out to be a problem with the air conditioning pump's clutch, causing a clicking sound when stepping on the accelerator. When checking, first look at the fuse box; if a fuse is blown, replace it with a new one. Belt issues are also simple; just tighten and adjust it yourself. It's best to have an experienced mechanic take a look to avoid wasting time on unnecessary tinkering. Note that driving long distances in hot weather with frequent use of the air conditioning can easily lead to such problems, so regular belt replacement is necessary.

[VanStella]

I've experienced the strange noise when stepping on the accelerator with AC on, usually a clicking or humming sound. The compressor increases engine load when starting, and accelerating may cause belt slippage, or noise from worn fans or bearings. Simple solutions: check if the belt under the hood is loose or aged by shaking it manually; also inspect if the AC fuse is blown. For clutch issues, professional repair is needed. Try spending around a hundred bucks to replace the belt or fuse yourself - cost-effective and efficient. Don't drive too long with the issue to avoid worsening the problem and compromising driving safety.