car ac compressor whining noise. AC whining/humming noise 2002 325xi. The squeal is caused by the belt slipping around the AC compressor pulley. See this post on how to test to see if the problem is caused by a tension issue. This is a compressor noise that you . - No AC on, just regular cold or hot air, randomly causes vents to not blow out a lot of air sometimes. When AC is turned on, the clutch locks up and turns the compressor itself. It does it almost everytime I start the car. It could also `be making noise from . The article below shows the causes of the noises in the Car ac compressor, which are with the faulty parts in the air conditioner. Humming might mean the starting capacitor needs to be replaced. I figured a new compressor would have the correct clutch gap. It is the car’s way to equalize pressure between the high and low-pressure lines of the air conditioner. I tried to record it but you can't hear it. You can confirm this by removing the belt and spinning the compressor clutch/pulley by hand listening for any hum/squeal/grinding noise. My ac compressor whines pretty loud, and gets louder the warmer it gets. Here are the most common AC noises. sputnik767 said: It is impossible to say whether it is the clutch or compressor. Did the whining noise occur Car now has over 110k miles, same noise, nothing ever happened. AC compressor noise on startup—GM has issued a technical service bulletin #07-01-38-010A to address an AC compressor noise on startup. Is your air conditioner making high pitched hissing noises?. Whine when air conditioner compressor engaged at lower speeds. Check and remove the faulty parts 3. When we talk about AC compressor noises we’re discussing sounds it can make when the unit is engaged. A whining sound when accelerating is almost always caused by a bad accessory attached to your Silverado's engine. Stops immediately when the compressor kicks out or A/C is turned off. It is quite common to hear a noise of this nature, when a transmission’s fluid level is reduced beyond capacity, or when a transmission fluid pump begins to fail. As was mentioned above, in the 70's cars WERE audible. So, if you’re hearing a whining noise when accelerating, then they’re most definitely is a problem that requires an immediate solution. Could the air compressor be going bad this early? I have an appointment with the Chevy . the compressor whining noise, the full blast fans and not so great AC . disini tersedia informasi seluruh koleksi pustaka yang dimiliki universitas telkom yang terbuka dan dapat dipinjam oleh publik. I have attached the recording in this thread,AC Compressor Noice 2020 . I brought that to the attention of the service writer and he proceeded to tell me that "the noise is normal. Table of Contents Steps of loud troubleshooting noise from the Car ac compressor Tools needed 1. The AC compressor pulley rotates, but not the AC compressor shaft. The sound is noticeable as I come to a stop or start from a stop. But, be calm, don’t worry it’s not an issue. If a whine indicates the actual compressor is shot, then i guess i'll just replace that with one from a junkyard, but i'd love to be able to grease something up and get the noise to go away. It is a sign that something is wrong with the air conditioner. Tighten the mounting bolts or replace the mounts, as necessary. When car air conditioning is making noise when turned on it indicates that there is some problem with the AC compressor. AC compressor noise — Squeal or screech when the compressor engages Ac Compressor Belt issues. Squealing is common when the serpentine belt has a problem. Troubleshooting done so far: replaced o-rings on power steering pump. The car has been great fun, though recently, the car started to develop a squealing noise. While you might not classify your sound as a scream, it could be more of a whine. They always make some noise right, it is a compressor after all. 2002 325xi 5spd here's the symptoms-This whirring/whining/humming noise is only heard when the AC is on. ie when in park and you lightly rev the engine there is a light whining noise when the AC is on but if I turn all the hvac controls off and then rev the car . the top one is in a slot, and it pivots about the lower bolt to adjust the tension. My new to me, 2008 Acadia with 75K mi, has a whining noise that increases / decreases with the RPMs when the AC is on. The hissing noise does not start up immediately, and only comes on after a whining noise (from the compressor or evaporator, I assume). When an AC malfunction occurs, noise drivers are most likely to experience loud squealing or screeching. When the vehicle is turned off or the air-conditioning compressor clutch is disengaged the system will equalize the pressure. This means that your system is overcharged, which means there is too much refrigerant in it. If your vehicle's breaks made that sound, you'd take the car to a mechanic right away. We pulled off belts (Alt / Pulley / AC ) until the noise went away. Listen to your AC unit regularly to ensure that you’re not letting a small issue grow out of hand. Are you struggling with a noisy car AC compressor? You don't have to worry about the loud and unpleasant sounds anymore. The A/C still blows cold while on, and I am not getting any funny smoking/clutch type failure out of the clutch on the compressor. The AC compressor pulley is connected by a drive belt and rotates at all times when the engine is running. Her brother's identical XV does not sound like that. It is pretty loud and surprising as the car is shutting down, pretty quiet, and then all of a sudden it makes this loud fluttering/grinding/whining noise for about 1. My AC Makes a Rattling, Groaning, or Knocking Noise. AC compressor makes noise at low speed. My car was making a really loud whining sound that was coming from the A/C compressor. Why is My Air Conditioner Squealing?. My prior Tacoma didn't sound like that. I haven't gotten around to fixing it yet though, but. A whining sound from your vehicle’s transmission is generally indicative of a fluid-related issue. The hissing sound is the Freon from the high pressure side slowly feeding into the low pressure side and this is completely normal. To air conditioner compressor clutch not engaging 100 doors 2013 level 24 video ultra maniac ova castellano spark freedom calling qb1 ventures 10074g50 malapetaka sodiq esl library promotional: else code 2004 gmc sierra 4. Shutting off the A/C the noise goes away. Arrange the condenser coils in place 4. A slipping belt would make noise, and the AC compressor puts more load on the belt than the alternator or power steering pump . Overdriv said: My AC compressor makes a fairly loud rumble noise at idle speed in gear. when the AC kicks in - but it may not be the AC Compressor pulley. -You can only hear it from inside the car. I took it in and had them look at it, only to be told its normal. When the a/c is on and you hear that sound it means there is no firm grip between the belt and the pulleys. complete idiot when it comes to A/C systems in cars 06-13-2008, 01:48 PM #2. In addition to the AC compressor clutch, we also. It's not bad, seems to do it mainly when I start going, and then I can hear it a little when I'm crusing. 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. Less oil can be the reason for oil leak or valve are stuck and need adjustment. Have 34K miles on the car, not sure how AC components fail this early? I was reading that sometimes a AC refill solves these types of noises. There is a problem with these ac compressors making noise and vibration when over 80 degrees outside and the head pressure is high. I had a 200 mile drive home from Classic Chevrolet in Dallas to Austin. High pressure line, then condenser and then later, the old compressor. first i think it is because the compressor , but the sound inside ? the dealer said it is normal but i knew my car there was no sound. I took it to the dealer, and they said that I needed a new compressor, and wanted about $1000 to replace it. Hi, my car has started making a weird noise. This is one of the most serious compressor noises, and it should. Common A/C Noises & What They Mean. Its been making noise for 2-3 weeks now, tonight I finally was able to get it into the shop and troubleshoot. There are occasions when the AC is on or off, when you ask it to be the opposite, not sure why, but generally only at a time when it shouldnt be noticable. Of the noise changes, quieter when it is off, then the clutch or its pulley is most likely the source of the whine. What is a whining noise when accelerating? While the transmission is the most likely cause, whining while accelerating can also be caused by low power steering fluid or more serious damage like faulty alternator bearings, a malfunctioning water pump, a broken piston or a bad AC compressor. Update: The problem has been solved, check it out here: http://www. adidas climalite 3 stripe golf pants; what percentage of basketball players get injured?. With the A/C compressor on, and especially if the engine is idling, 2002 Silver V70 - the basic non-turbo winter car S80 V8 AC noise. Layanan gratis Google secara instan menerjemahkan kata, frasa, dan halaman web antara bahasa Inggris dan lebih dari 100 bahasa lainnya. Strange whirring noise coming from AC but it's NOT. So, if you're hearing a whining noise when accelerating, then they're most definitely is a problem that requires an immediate solution. This is the 3rd compressor im replacing this week! When the AC is on and i accelerate, the compressor makes a whirring/whining sound! On park, if i lightly step on the gas to 1000-1500rpm, the compressor makes a sound similar to the steering wheel/pump whir you hear when the fluid is low. Turn the ac off, and the noise stops immediately. Here are the most common causes of whining noises when accelerating: 1. will a bad ac compressor affect the engine? 6. Should I Take My Car In for an Inspection if I Hear a Clicking Noise?. there's likely a leak in the ac system, and you're loosing the charge over a period of 2 days. I bought a new 2004 Ex pedition and it made this noise Ford calls (get this) CHUGGLE. - If I'm driving slow, like below 30 mph, the car will make a whining noise (almost like a high pitched fan sort of noise). Basically the little guide wheel for the fan belt t othe AC. On average, car AC compressor replacement costs $800-$1100. When the bearings internal of the clutch are worn, the clutch will make a whining noise. I know what a whining automatic transmission sounds like. It lasts for around 30 seconds and stops. It comes and goes, but one day when it started I hopped out and checked under the lid to see where the noise was coming from. The pulley was easy to replace. The loose parts will rattle and shake and you’ll hear a racket when you kick on the AC. When it's not making the noise, the cooling is fine. Hey Scotty! I keep hearing a whining noise at idle in Drive with the AC on, in my 2002 Camry 2. Whining Noise From Engine When Cold?. An aging compressor motor can also create a rattling noise – an indication A loudly humming AC unit may be in need of more lubrication. It happens when driving very slow and it can occur when the car is . But the loud noise when the AC switches on is another potential symptoms of bad AC compressor. There are many types of unfamiliar noises that could come from under the hood of a car when something failed to work properly. It happens when the compressor is engaged. If you hear an AC compressor noise, it has likely malfunctioned. The most common type of noise in the ac compressor is the rattling noise that occurs due to failures with the compressor, faulty pulley, fault belt, and issues with the idler pulley. A/C works fine though, blows nice COLD air. So tournament level 1 week 130 movie dolls 2002 laphoria famous celebrity family trees car. After having the a/c on for while , the engine normal temp I start hearing a sound that can be described as a whirring/purring/whining noise . I checked the pressures and it had 25PSI low, 250 high side. Humming: A failing start capacitor in a compressor can create a variety of different noises, one of the most common of which is a loud humming. After looking around for a few minutes, it definitely sounds like it is coming from the A/C compressor. ) Taking it to a dealer is out of the question for my piece of crap 2015 Forester because it now has 90k miles on it. Another good air conditioning noise is the roar of the condenser fan. Why does my car AC compressor make noise? Compressor: If your AC compressor is beginning to fail, it can make a rattling noise. Often, rattling, groaning, or knocking noises come from an AC compressor or other system component with loose or damaged mounts. Some will use belt dressing to diagnose the concern but it is best to spray a bottle of water into the belt. With AC on and in gear, it's about 950-1000RPM. But the whine could be the radiator fans, which will turn on at slow speed after the compressor starts building pressure in the system. A whining sound from your vehicle's transmission is generally indicative of a fluid-related issue. ღ Ƹ̵̡Ӝ̵̨̄Ʒ ღ Popular original audi a6 and get free shipping. AC humming buzzing whining noise. All the problems come around 70k. The sound may come and go at times. A screeching or squealing noise may also . The noise you hear from the a/c compressor when it is first turned on is caused by where the compressor is located. Sounds like an older car with a bad alternator whine. Likewise, a metallic grinding sound could be serious business in an air. See this post for more information on AC pressure gauge readings ©, 2020 Rick Muscoplat. Took it to the local Subaru shop last night and the noise goes away when the compressor (belt) was disconnected. Especially a convertible, that was the expectation. If your air conditioning unit is emitting a high-pitched screeching or hissing sound, the most likely cause is high pressure built up in your . The humming sound is due to the pressure in the ac lines, have it checked out proably getting too high when it's running. My car air conditioner makes a chirping noise. The A/C adds more load to your engine through its compressor and a such more friction is required to prevent the fan belt from slipping on the pulleys. Replaced compressor, too much oil????. Your car shouldn’t be making unwanted noises apart from the natural sound of your engine. This article will examine the average cost of replacing a car AC compressor. Whining noise from Dash AC Fan Bought it used with 6500 miles on it. Unfortunately, BMW does not sell the components, only the complete compressor assembly. Hi there, if the problem only occurs when the engine is cold then it is most likely the. Mine doesn't sound like that (it does make a faint whining noise though). When an alternator is going bad, it'll often begin to put out a high pitched whining sound. (b) Check for abnormal noise from the compressor when the. Hello all, I am getting a loud whining noise that gets louder as the rpms go upit changes sound to more of a metal on metal sound when you turn ac offso I am thinking it's ac compressordoes anyone have and ideas and how to write up on changing thisif it is the compressor am I able to just put the clutch kit in it or should I change the entire compressorit's just the clutch kit. Rattling or your car air conditioner making loud humming noises which get worse as you accelerate can both be signs you need to replace your AC . If the Freon has leaked out, it won’t turn on, so nothing is moving inside. AC blowing nice and cold, everything worked great until just now. If you are running the compprssor and it is whining, that is a sign that the compressor is about to fail that is why they said stop using it . I’ll also add that the system has likely been converted to 134a from R12. I understand they all make some normal noise when the ac is on. Compressors do make some noise while operating, a "slight whine" wouldn't sound Gone 2 weeks, car parked outside, no one else used it. I was able to jump the car without issue. If the belt that drives the A/C compressor is making noise, that could indicate several possibilities: The belt is loose, meaning that you need a new belt tensioner The belt is glazed or worn, and needs to be replaced The belt is slipping because the A/C compressor is on its last legs and is about to seize. (I thought the compressor was making the whining noise) 4. This cycle is sometimes audible inside the car, causing a clicking noise. Get some tips on selecting the best AC unit. Tell me about the Compressor's Noise. When your car has a problem, one of the many ways it can communicate it is by a distinctive noise. The whining noise is back though and taking it in Thursday for it to be checked out. Essentially, the only noises you should hear coming from your air conditioner . If the squealing sound you hear associated with air conditioning is in your car, the diagnosis is usually simple. You should fix this noise right away before it gets into further damage. i decided to bring the car to the ac repair shop. Aircon compressor is stuffed !! Replace or recon. My car is a 2012 Buick Verano with the 2. The idler pulley was visibly rattling side to side. It is quite common to hear a noise of this nature, when a transmission's fluid level is reduced beyond capacity, or when a transmission fluid pump begins to fail. A quiet whine could be just as bad as a loud scream. I've noticed that the AC compressor is pretty loud and I can hear it inside the car when it is running and I am stopped. Was not cooling real well and the compressor was making a slight. While the transmission is the most likely cause, whining while accelerating can also be caused by low power steering fluid or more serious damage like faulty alternator bearings, a malfunctioning water pump, a broken piston or a bad AC compressor. Compressor: If your AC compressor is beginning to fail, it can make a rattling noise. Why is My Car AC Squealing and How To Fix It. Air conditioner compressor noise. My AC Compressor makes this sound. Check the belts are tensioned correctly . If I take out the AC compressor fuse, the noise stops, but it just . Repeat the test with the A/C set to "Off". lately I've been hearing a whining noise that only lasts a second or two. A squealing noise can come from your air conditioner whenever there is high internal pressure. Squealing car AC and other common noises Does your car make a squealing noise when the AC is turned on? If it does, you're not alone. I've read this is normal or it could be the AC compressor or belt. The fact that it didn't happen until the compressor was replaced, I am pretty sure it is the compressor. Your compressor works to pressurize and cool the refrigerant found in your unit. The alternator mounts via two bolts. on the car will drive the power steering, alternator and AC compressor . Why Does My Ac Sound Like An Engine?. If there is an rpm-dependent whining noise present with both A/C on and off, and the noise is caused by the tensioner pulleys, guide pulleys or refrigerant . This one starts out as a noise diagnosis that ends up working in an AC clutch repair on a 1998 Acura 3. Discussion Starter · #1 · Jul 16, 2011. After searching the forums, I. Hey guys, I tried searching and googling and can't find a straight answer. The pitch of the whine raises with an increase in RPM and the noise only happens when the compressor is engaged. How much does it cost to fix hissing noise in car AC? The first thing you’ll need to do is inspect your vehicle. The last type of car ac compressor sound is probably one that most people have heard during their lives, if not while driving a vehicle themselves: high pitched whining noises from under the hood accompanied by periodic loud thuds and clunks emanating from under the dashboard. Car Makes Whining Noise When Accelerating While the transmission is the most likely cause, whining while accelerating can also be caused by low power steering fluid or more serious damage like faulty alternator bearings, a malfunctioning water pump, a broken piston or a bad AC compressor. This sound may also be caused by a broken motor in the compressor of the condenser system. If abnormal noise is being emitted, replace . I want to know if anyone knows how to fix it. The noise is a moaning sound on low RPM and a whining or whirring on higher RPM. 2 Reasons Why Your Car's Air Conditioner is Making a Clicking. com/watch?v=cd0DuoNs4e0Here's a much better video of the sound my A/C compressor m. 7 Common Symptoms of a Bad or Failing AC Compressor. If the whining is the clutch in the pulley, it should stop when AC is running and the clutch locks up. A click or loud hum in the car's air conditioning that gets worse when you accelerate can both be a sign that the air conditioning compressor . The car AC hissing noise is produced when you turn OFF your A/C. High internal pressure can build up inside the compressor over time — and although most air conditioners have a sensor that will signal the system to shut off automatically when this happens, those sensors don't always work. Can I drive my car if the AC compressor is bad?. As soon as the belt for the AC was pulled and the motor started it was nice and quiet again. Then when the unit kicks on they could hear a noise. Humming is also sometimes due to electrical issues like loose wiring or a malfunctioning compressor. It's possible to extend the service life of your AC condenser with these simple troubleshooting and maintenance tips from the AC condenser repair guide. Had the same compressor noise/whine that changes pitch with RPMs. This is one of the most serious compressor noises, and it should be taken care of as soon as possible. Vehicle: 2007 Honda Accord coupe EX Problem: whining noise coming from a bearing in either the alternator, compressor, pulley (according to a mechanic, but he can't tell at the moment). Still makes the noise a few seconds after the car is turning off. Yesterday when I tried to start the car after work, it would not turn over. Daily drive : Polo TDI Sportline 180 Hp 349 Nm ATW (Trevor's Custom Map) At Night Dyno Wife's . I realize over the net this is mostly worthless info. The different types of noises from the car’s air conditioner include the hissing sound, the clicking sound. When an AC system makes a high-pitched whining sound, it usually means that the bearings in one of your compartments have gone bad . My fiance's 2014 XV doesn't sound like that. Maybe it's the AC compressor making noise. It currently has 160,500 miles on it. Compressor runs constantly when auto button in the hvac control on dash is pressed or the button which does two way air flow direction. November 13, 2014 at 2:46 am #633140. , humming noise, grounding noise, squealing noise, and others. If this needs to be done by a mechanic, it will set you back $100-$300. If it is still getting power after it has stopped functioning – a buzzing sound . It gets louder as the RPMs go higher. Q: When the car starts, I can hear a whining sound coming from the area of the tensioner or AC compressor. Cools very well and is smooth as silk above idle 1200+RPM. I go buy an AC compressor and a new belt, install them and things seem good again. Why Does My Car Whine When I Turn On Ac? When your air conditioner starts making an unpleasant buzzing noise, perhaps it is due to a malfunctioning compressor. If I turn the car off and on again it . The air blows cold on 1-4, and it doesn't take long for it to get pretty chilly. AC Compressor Noise Diagnose and fix AC compressor noise on startup. Learn what an air compressor does. Drive way test confirmed that the . It’s still important to seek out a mechanic to diagnose the issue, since failing bearings in the compressor pulley can also cause other noises such as roaring, grinding, and squealing. Whining noise when idling the car is due to the less in oil. (Not my video, but the sounds are very similar. Under the hood it's hard to detect the source due to background noise- it's more audible inside the car. The compressor is, usually, responsible, in more cases, for the bad sound symptoms that cause the air. Will whine in all gears, but most noticable at 18 mph in second, 30 mph in third, and 38 mph in fourth. I checked under the hood and also listened while driving and the sound, which is like a "whirring" high pitched noise, increases with RPM and only when I engage the AC. Additionally, a failing torque converter can also present a whining noise. -The noise changes frequency with engine RPM's. But the sound was coming from the ac compressor. Try some spray lubricant in between the pulley and the compressor to see if that reduces the noise. The most common causes why your car's AC makes noise when it is turned on are : The AC compressor needs to . AC wasnt cold so i added a half can of 134R and its now ice cold but day after i noticed whenever the AC kicks on while im driving the pump makes a deep whining noise that increases with RPMs. Should An Engine Whine When The A C Is On? – McNally Institute. Also described by dealer as "normal". The noise you hear is from your fan belt. Recently my wife's 05 Liberty has developed a nasty whine coming from her A/C condenser both with the A/C on and off. When the air conditioner is engaged, a squeal . For example, if your car has a grinding noise that is coming from under the hood, the source could be a bad AC compressor. A metal-on-metal grinding sound is rarely a good sign in any mechanical object. perpustakaan digital universitas telkom. 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. this may well make a whining or buzzing noise. If you hear a screeching noise coming from outside, there's probably an issue with your AC's compressor. A bad ac compressor pulley and bearing can make squealing noises while rotating. Also, the price may increase if the technician charges a high rate, the local taxes are high, or the replacement is not readily available. I found mine when the car was running and was up on ramps. Here, we have enlisted the best car ac compressor for your ac system. Your car shouldn't be making unwanted noises apart from the natural sound of your engine. Check the other pulleys by taking the belt out and turning the pulleys one by one and seeing if it makes noise. The most common cause is either too much or too little refrigerant in the system. 2007-2008 Cadillac Escalade Models. Starting about a month ago, the car developed a whining sound while the AC is turned on. I suppose if the clutch is always on, it could be the compressor. When AC is on noise goes away and clutch spins normally. You can almost always expect the result of an overcharged system due to overcharged refrigerant in the system. This cost may increase if it's a high-end vehicle. … Your AC will not be able to properly cool your vehicle and it may cause serious damage to your compressor or other components. So my 03 ZX3 has been making this whining noise for the past few days when the A/C clicks on (almost sounds like I have a supercharger on the car), and goes away when the A/C clicks off. This noise will be worse during acceleration. This is likely the result of a loose mounting bolt on your AC compressor or other places in the system. If the noise is ONLY there when the clutch is "in" it's the compressor bearings. A less common cause of AC compressor noise is an overcharged system. If your AC compressor makes noise 07-01-38-010A, read this article. I have a 2015 and I absolutely love this car! I had a 2006 scion for 9 years with the only issues being replacing the water pump. Answer (1 of 4): There are two or three types of auto AC chirp. As far as the AC compressor's "whine", two things are possible if it is actually still short of oil it will whine at speed, and if it is short of refrigerant what you hear might sound like a whine. If there is a problem in the air conditioning system, such as a leak, the compressor could turn on, then off, then on, then back off again. An AC compressor’s buzzing sound is a sign that it is soon likely to be worn out. I also re-measured pressures tonight, 36 psi LS and 160-170 psi HS with box fan in front of condenser, 170 -175 psi w/o box fan, low side remained same with and without fan. Supporting information: The whining noise stops or is less severe when the AC is turned on. If the noise suddenly stops after doing so then you should send your car out for inspection. The noises are normal, but when they turn loud, there is a problem with the air conditioner. I just got the car a week ago though, so I don't know how long it's been doing it. Also the noise only starts once I get in some stop and go traffic like a stop light. All newer units have direct-drive motors (meaning no belts). The compressor works like a pump to compressor refrigerant. Complaint: The AC compressor is making noise. does a failing ac compressor make noise? 5. My '93 TSi makes a whining/whirring sound when I use the A/C compressor too. These sorts of units use a fan to draw air across the condenser coils located inside of your compressor. Knocking or clicking usually signals loose mounting bolts or any of the other various air conditioning components not being tight enough. 1- is it inside the car and constant? 2- is it outside under the hood and does this sound occur every five seconds or ten seconds or even once every 20 seconds? If it chirps inside and seems to change pitch a tiny amount as you cr. There is a dip stick under the cap that will tell you if the fluid level is low. 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. Went ahead and put in new compressor, drier, and filter. Whining noise while AC compressor is engaged. Rattling noise: A loose or worn clutch hub or loose compressor mountings bolt will also cause rattling noise from the compressor. A squealing noise can come from your air conditioner whenever there High internal pressure can build up inside the compressor over time . Top 7 Ways on How to Quiet a Noisy Car Ac Compressor. Why does my car make a whining noise when its cold? Cold weather can exacerbate underlying car problems, so you may begin to hear squeaks, squeals and other funny noises you haven’t heard before. when the compressor has to go from zero rpms to 1,300 or more, it puts more stress on the belt and it will make noises if it gets loose. Why is my AC compressor whining? Screaming or whining: If your compressor is making loud screaming or whining sounds, it could have an issue with its internal pressure. And it could be the A/C compressor is finally doing some work and the vibration of the compressor is causing some other thing under the hood to make noise. Screaming or whining: If your compressor is making loud screaming or whining sounds, it could have an issue with its internal pressure. I'm not one to take my car into a dealership. The noise can best be described as a twin screw supercharger type whine, very loud. Why Is My Car AC Making Hissing Noise?. A whining noise coming from somewhere but stops completely when Air con is turned ON. Discussion Starter · #1 · Oct 11, 2010. 5 Bad Car Air Conditioner (AC) Noises and How to Fix Them!. Add lubricants to the system Causes of noise in the Car ac compressor 1. A video about how to replace the AC compressor clutch. The only time the AC compressor shaft rotates is when the AC unit is turned on. These noises may be caused by the engine belt, the serpentine belt, the air conditioning compressor or a power steering pump. Whining is another problem connected to pressure within the compressor. The whining noise you are describing sounds more like a power steering pump problem, usually caused by a low fluid level. It is something like a whistling noise. It was due to low refrigerant. The AC compressor has several interior components and uses a sealed bearing to turn. Thought perhaps it was the auto box, part of the AWD system or maybe the The whining noise could be the compressor belt, bearings or the . The noise BTW sounds almost like a supercharger whine.