Buzzing Noise- A sign that…. Loud Squealing Sound- Usually the most commonly reported weird sound. At idle speed the AC is pretty bad. My car was making a really loud whining sound that was coming from the A/C compressor. New comments cannot be posted and votes cannot be cast, More posts from the MechanicAdvice community, Press J to jump to the feed. Most likely cause: Your compressor. So as the compressor cycles on and off, the noise will come and go accordingly. The squealing noises are a bonus. Have you checked the belt? When accelerating or decelerating, and the A/C is on, there is a whining noise coming from passenger side. What causes the noise: A banging sound usually is a sign that there’s a loose component inside your compressor, like a connecting rod, piston pin or crankshaft.Additionally, a banging noise could mean you need a new compressor. (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(hs); Should you notice your air conditioner making any weird and uncommon. The AC compressor has several interior components and uses a sealed bearing to turn. If the clutch is slipping wouldn’t that mean the compressor is spinning slower than it should, giving worse AC performance? Press question mark to learn the rest of the keyboard shortcuts. Best Product Reviews For The Solution You Need, Is your car's air conditioner making weird noises?. New AC compressor noise john zicha. Your car shouldn’t be making unwanted noises apart from the natural sound of your engine. Update: The problem has been solved, check it out here: http://www.youtube.com/watch?v=cd0DuoNs4e0Here's a much better video of the sound my A/C compressor … So if you hear unusual sounds coming from your air conditioner during normal operation, don't ignore them, as this could be a sign that the unit needs a … The AC doesn’t work that great. Troubleshooting done so far: replaced o-rings on power steering pump. It’s a Mercedes W124, the compressor is a Denso 10PA15C I think. It might be the compressor causing the noise and making the car feel sluggish when it's engaged. #3. its probably the belt, when you turn the ac on it begins to turn the compressor and if the belt doesnt have enough grip it will slip and cause that noise. If you’re hearing a car AC compressor noise while accelerating, or a buzzing noise when you first turn on your car’s air conditioner, you may have too much Freon in your system. Car Ac Compressor Making Whining Noise. If any of the interior components break, or the compressor’s internal bearings fail or seize, then all sorts of noises can be produced as a result. You might want a local AC shop check the AC compressor to see if it's starting to go. This could either be the compressor itself or something related to the belt drive that is making noise when the added load of the compressor is on. Pop the hood open and take a look at AC system hoses. Often topped off during a routine service visit, an overcharged air conditioner means the refrigerant may be entering your AC compressor intake port — and that’s bad. A high-pressure buildup can be extremely dangerous. Originally published in July 2013, updated September 2016 When the familiar hum of your Charlotte, NC home’s air conditioner is interrupted by unfamiliar noises, it’s a good idea to be concerned. While you might not classify your sound as a scream, it could be more of a whine. Also would it just be a standard generic bearing? var _Hasync= _Hasync|| []; Belt: If the serpentine belt is worn, it can slip when the compressor engages, causing noises. Shut off your AC and contact someone to repair it. The fact that it didn't happen until the compressor was replaced, I am pretty sure it is the compressor. Buzzing Noise- A sign that the AC Compressor is beginning to go bad. Think of these sounds as a cry for help from your air conditioner. Then when the unit kicks on they could hear a noise. When I have the AC on in the car it makes a whining noise which gets worse as the car revs up. While your at it have a look at your belt tensioner also. ”If your car AC starts squealing as soon as you turn it on, you could have a cracked or broken AC belt, faulty AC compressor clutch, or faulty AC compressor pulley and bearings.” That’s the first thing to check. The loud noise when the AC system may appear to happen inside the of! 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