Clanking or rattling: Loose internal mounts can cause rattling and clanking from the compressor. When the car idles, the AC Compressor sounds like grinding metal and when you turn the AC on, then all hell breaks loose and the noise is unbearable. This is because it is a very complicated device that involves proper shimming, to set it correctly. Well, you can only enjoy that if the AC is working. No i mean ac compressor clutch is engaged there is a noise from the compressor Troubleshooting A/C condensor not running? An air conditioner pulley making noise can also come from failing bearings. Again, this is something that should be checked out by a professional. Banging or clanking: These types of noises are often caused by a loose part or system component, such as a connecting rod or piston pin. I was able to locate it to the … When i shut off the AC the clicking stops. Can you tell if it's squealing when the compressor's on or off? It has noise only when the ac clutch is engaged but no noise when ac compressor is not engaged or the engine is revved. The AC works fine and the compressor doesn't seem to be problem. Idler pulley. Normal noises include the sounds of A/C compressor clutch engagement, the blower motor, moving blend air and mode doors, and pressure equalization after vehicle is shut down. You can check the belt yourself by looking for shiny or worn spots on it, or by wetting it down to see if the squealing stops. The noise would start when the compressor engages due to the increased load on the engine. It sounds like the bearing is going bad. the cluch is not cycleing on and off, its engagged the whole time the ac is on, i have read its normal for the clutch to be engagged and not click on and off in hot temps … So you can take this as a warning sign. You wouldn’t think it’s the AC as some have thought it’s the diff making that noise but as soon as you turn the AC off and the AC clutch disengages the noise stops. Normally, you should hear or feel nothing when the air conditioner is working except the cold air coming from your car’s heating/cooling ducts. Either way, trying to troubleshoot a noisy clutch can be complex and time consuming. Your car air conditioner is supposed to run quietly, but when it starts to produce noises, Your car’s AC compressor could be failing. I have not tested anything yet since I am recovering from some recent medical issues but I am thinking of … Theres a rattling noise on my mazda 3 ac compressor. problems contact [email protected] There has been a grinding noise coming from the AC compressor in my 2010 XC60 since I owned this car. The next video shows you how to check the … Understanding why clutch components make noise … In fact, the noise is reduced when the compressor is on. Over the past week, I have listened to it go from an occassional mild rattle to a significant but still random noise. I knew if I continued to drive the truck with the bad bearing it would eventually sieze and cause the serpintine belt to break leaving me stranded and probably ruining the air conditioner compressor… Listen for any internal buzzing or clicking from the clutch. A/C Compressor and Clutch Noises. The loud noise when the AC switches on is another potential symptoms of bad AC compressor. In this scenario people might try adding refrigerant on their own. If the noise is occurring, and is completely unchanged, regardless of whether or not the compressor is engaged (i.e., A/C turned ON), then the noise has nothing to do with the compressor or clutch. Copyright© My bimmer dude wanted me to wait until the Fall to replace the compressor because of the $500.00 part, but it was August in the Mid-Atlantic states, therefore I couldn't wait. Listen for excessive bearing noise coming from the clutch or compressor. AC Clutch Noise. Mine is making almost a ringing noise. Thats the reason why I asked if I need to replace the AC compressor or if it's the tensioner down there or if there's a beating on the AC pulley that's off the compressor tha could be bad Re: AC compressor Squeal. This is only recommended if you have a great deal of knowledge about it. Thanks. Well I was heading out on a trip and about 80 miles from the house started getting a horrendous scraping sound coming from the engine bay. Usually, the only solution if to replace the compressor. If you have no leaks and only a horrible noise when running the A/C it … Noted below are a few of the common reasons why you might hear noises coming from the bell housing or the clutch department, along with a few of the best methods for troubleshooting these issues so that a professional mechanic can make repairs. It only was noisey when I turned on my A/C because of the fan clutch. I'd pull the a/c belt of and spin the tensioner and a/c pulleys by hand. The most valuable solution is changing the whole AC compressor. According to Denso:” 99.9% of all compressor problems are not related to product failure, but from a poor understanding of A/C system operation, maintenance and repair.” Noisy Compressor clutch,bearing failure. This guide will help you diagnose the problem when you start hearing strange noises. Loud Noise. Then when the unit kicks on they could hear a noise. That I know one of the first thing a shop would check is the charge and pressure, which noises also can … Replacing the noisy bearing without finding the … When we talk about AC compressor noises we’re discussing sounds it can make when the unit is engaged. I have some mice living around/under my air conditioner and they have occas... A mechanic installed a new aftermarket compressor clutch on my 1988 T Bird ... 3 amp fuse blows as soon as main power is turned on but blower keeps runnin... Hello: Just prior to the AC turning on, there is a loud buzzing sound that ... Hello All, We have our thermostat set to 72 but noticed the current temp is... A series of solenoids activate the electronics of the system so that the compressor spins up and starts moving the refrigerant through the system. the new AC compressor clutch bearing is toast!". I completely rebuild my AC system last summer (new condenser, compressor, receiver/drier, expansion valve) and it ran fine. Another potential symptom of a failing AC compressor is loud or unusual noises. Another noise you might hear from the air conditioner clutch is a heavy thunk when you engage the air. However, a worn clutch can produce a loud click. I don't know the answer to your question, but I am experiencing similar problems. Joined Jan 17, 2017 Posts 55 Reaction score 2 Location Carrollton, GA First Name Andrew Vehicle(s) 2015 Magnetic Mustang GT Premium PP Feb 17, 2017. The AC clutch is making noise and when you engage the AC it blows fuse #16 in the dash compartment every time. May 25 2015, 8:24pm. It gest faster as the rpms get higher, but the AC is still blowing cold. We welcome your comments and I'll be out of town starting tomorrow so my reply may take a day or two. Automotive a/c compressor clutch bearing failures are usually caused by system problems and not the bearing itself. Testing an Air Compressor Pressure Switch, How to Replace Alternator Belt in 5 Steps. How To Fix A Vibrating And Noisy Car A/C Compressor. If the clutch fails to engage and spin, but you hear electrical buzzing or clicks inside, it indicates an internal clutch short. suggestions. A buzzing noise from the compressor when the air-conditioning clutch … If the Freon has leaked out, it won’t turn on, so nothing is moving inside. It is definitely the AC clutch bearing. to this site, and use it for non-commercial use subject to our terms of use. A rattling could indicate it’s time to replace your worn out compressor clutch (and maybe even the entire AC compressor). Have your assistant turn on the AC controls to maximum. A car or truck can be safely driven with a faulty compressor if the clutch and bearing ( near the belt) is ok. The compressor is the heart of the system. home improvement and repair website. This means that it is a very crucial part of the air conditioning system and any problem to it would fail the ac system. Credit: Getty Images/iStockphoto 3. Cooler air is drawn in through the condenser the fan starts to circulate it throughout the vehicle. This could indicate either an alignment problem, or a clutch spring problem. My air conditioner model number CA5530VKA1 does not run. Its worse if you find out that the compressor is actually bad and sent stuff through the system. Are you having any trouble shifting? Clutches might be an easier job but if its the compressor then it involves working on all the system, replacing fluids lost during the job, fiddling with vacuum pumps etc. If the squealing continues, it could indicate the air conditioner clutch is out of alignment or, worse, going bad. I thought "great! AC compressor whine. These include the air conditioner clutch assembly, heat exchanger, compressor, drive belts, and pumps. Another noise you might hear from the air conditioner clutch is a heavy thunk when you engage the air. PM if you are interested. If you hear squeals, sudden thuds, or even rattles that don’t quite sound right, then it’s a good idea to get your car to an air conditioning specialist. Sometimes, when the clutch is worn, the disc is too thin and may not engage properly. You may freely link This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. So, if the noise is there all the time the cause has to be … Re: AC compressor … 1995-2018 MH Sub I, LLC dba Internet Brands. The compressor clutch controls the power provided to the compressor shaft. Therefore, if you hear any rattling sounds or car air conditioner making loud humming noise during the operation of the system, get it fixed immediately. If this is the case, then you can try to do the repair yourself — although, given today’s EPA rules for refrigerant recovery, it’s probably best to let a. Belt: If the serpentine belt is worn, it can slip when the compressor engages, causing noises. Most people who wonder what does a bad ac compressor sound like don’t know about the moisture leaks in the AC compressor. All information is provided "AS IS." Noises that could indicate the need for a/c compressor service or replacement include: Growling noise with compressor disengaged Whistling noise Grinding noise Squealing noise … Idler Pulley: It’s possible that the noise is actually from the idler pulley if its bearings are failing. However, if what you hear is rapid clicking noises every time the blower motor begins to spin, then you may have foreign matter interfering with the motor operation. There is reason to worry when that happens. Probably what you hear is the AC compressor clutch engaging. Discussion Starter • #1 • Mar 18, 2013. Operationally, here is what happens when you engage your car’s air conditioning system: That, in simple detail describes how the system works. You must log in or register to reply here. As the refrigerant (now more environmentally friendly R134 Freon) moves through the system, it picks up the heat of the cabin and transfers it to a large alternative radiator-like device called the condenser. These typically start when your AC compressor engages. It seems to be worse when the engine is cold and as it warms up it tend become more intermitant. And now, the compressor does not engage. DoItYourself.com®, founded in 1995, is the leading independent submitted to our "DoItYourself.com Community Forums". The A/C compressor pulley wobbled and made noise when I spun it. It is working fine tho. Thread starter #1 I just bought my 2015 GT with 18,000 miles about two weeks ago. I actually bought a brand new bearing that I didn't end up using. Compressor Clutch: The compressor clutch is a high-wear item, and if it’s worn … That is because the compressor and clutch are not functioning (turning) at all when the A/C system is OFF. JavaScript is disabled. The compressor clutch pressurizes your AC and pumps refrigerant through the system. The furnace blower... 2008 Chevy Colorado air conditioning problem. Much like other accessories driven by the engine’s belts, the AC compressor has several interior components and uses a sealed bearing to turn. Hey paul would you happen to have the part number for that bearing? It should be checked out by a professional. It also involves the proper handling of the refrigerant according to EPA standards. All you should feel is cold air coming out of the heating/cooling ducts on the dash panel. If any of those interior components break or the compressor’s internal bearings fail, then all sorts of noises can be produced. The sound probably means that … It should be checked out by a professional. This must be done very carefully so that you do not get your tool stuck in the snake belt and ruin your engine, which could result in serious damage. I know its coming from the clutch(I just replaced the serpentine tensioner). Still another air conditioner clutch condition that you might feel, more than hear, is a slight vibration when the air conditioner clutch disengages when you are idling at a light or if your vehicle has reached the temperature you want. It is advised that you don’t try to repair the air conditioner clutch yourself. This bearing is a sealed roller bearing. Questions of a Do It Yourself nature should be Car AC Refrigerant. When the AC is turned on, the grinding noise will come from the front end under the hood. I think it is the bearing going bad and I even sprayed a little WD-40 in the bearing and the noise died down a lot! All rights reserved. The AC compressor of all cars is driven by the engine belt, and it has a lot of spinning internal components that use bearings to be able to function. Website operating Noisy AC compressor? The compressor clutch is … The refrigerant helps the AC … My ac compressor is making a clicking sound, NOT on and off, but steady and constant. What if you turned on your AC and hot air greeted you instead? For a better experience, please enable JavaScript in your browser before proceeding. 57 Posts . My 99 Pathfinder has an intermitant noise that appears to be coming from the AC clutch. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. … View our Privacy Policy here. An easy way to check the clutch of your AC compressor is to gently and lightly tap on the clutch when the compressor is running and the motor is on. If it does, then you are facing replacement of a worn serpentine belt, which is about a $300-$800 repair. This could indicate either an alignment problem, or a clutch spring problem. It rolls a tad rough but seems to have a bunch of play. 7 A/C Compressor Noises that Need Professional Attention. This could either be the air conditioning clutch or the serpentine belt slipping. In any auto air conditioning system, there are several key parts. 2. Thread starter Andr3w; Start Date Feb 17, 2017; Andr3w Well-Known Member. A/C operation, normal noises. Moisture Leaks. It’s a Mercedes W124, the compressor is a Denso 10PA15C I think. Mechanic's Assistant: Has the clutch been slipping? Nothing beats the comfort brought by your car’s air conditioner especially when it is hot outside. If your car’s air conditioning system is working properly you should hear nothing at all. When I have the AC on in the car it makes a whining noise which gets worse as the car revs up. A worn bearing will produce a … There are times, though, where you might hear a squealing noise when you engage the air conditioning system. I was fortunate that I'd found the problem before it led to a major disaster. 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