DoItYourself.com®, founded in 1995, is the leading independent The refrigerant helps the AC … May 25 2015, 8:24pm. The next video shows you how to check the … Another noise you might hear from the air conditioner clutch is a heavy thunk when you engage the air. 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 completely rebuild my AC system last summer (new condenser, compressor, receiver/drier, expansion valve) and it ran fine. It also involves the proper handling of the refrigerant according to EPA standards. That I know one of the first thing a shop would check is the charge and pressure, which noises also can … 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. Mine is making almost a ringing noise. 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. All rights reserved. Are you having any trouble shifting? PM if you are interested. It has noise only when the ac clutch is engaged but no noise when ac compressor is not engaged or the engine is revved. What if you turned on your AC and hot air greeted you instead? Then when the unit kicks on they could hear a noise. 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. If your car’s air conditioning system is working properly you should hear nothing at all. Well, you can only enjoy that if the AC is working. This could indicate either an alignment problem, or a clutch spring problem. I was fortunate that I'd found the problem before it led to a major disaster. suggestions. AC Clutch Noise. Hey paul would you happen to have the part number for that bearing? There is reason to worry when that happens. When the AC is turned on, the grinding noise will come from the front end under the hood. I have not tested anything yet since I am recovering from some recent medical issues but I am thinking of … Troubleshooting A/C condensor not running? Credit: Getty Images/iStockphoto 3. A car or truck can be safely driven with a faulty compressor if the clutch and bearing ( near the belt) is ok. When I have the AC on in the car it makes a whining noise which gets worse as the car revs up. Idler Pulley: It’s possible that the noise is actually from the idler pulley if its bearings are failing. 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… 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. 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. It is definitely the AC clutch bearing. 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. Re: AC compressor … My air conditioner model number CA5530VKA1 does not run. Most people who wonder what does a bad ac compressor sound like don’t know about the moisture leaks in the AC compressor. You may freely link 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. home improvement and repair website. Compressor Clutch: The compressor clutch is a high-wear item, and if it’s worn … If the squealing continues, it could indicate the air conditioner clutch is out of alignment or, worse, going bad. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. The furnace blower... 2008 Chevy Colorado air conditioning problem. This could either be the air conditioning clutch or the serpentine belt slipping. Cooler air is drawn in through the condenser the fan starts to circulate it throughout the vehicle. A buzzing noise from the compressor when the air-conditioning clutch … Moisture Leaks. 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. Listen for excessive bearing noise coming from the clutch or compressor. A rattling could indicate it’s time to replace your worn out compressor clutch (and maybe even the entire AC compressor). However, a worn clutch can produce a loud click. Idler pulley. The compressor is the heart of the system. So you can take this as a warning sign. A/C Compressor and Clutch Noises. This bearing is a sealed roller bearing. And now, the compressor does not engage. 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. Sometimes, when the clutch is worn, the disc is too thin and may not engage properly. The A/C compressor pulley wobbled and made noise when I spun it. 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. I'll be out of town starting tomorrow so my reply may take a day or two. This is only recommended if you have a great deal of knowledge about it. Can you tell if it's squealing when the compressor's on or off? Listen for any internal buzzing or clicking from the clutch. This is because it is a very complicated device that involves proper shimming, to set it correctly. Copyright© Another noise you might hear from the air conditioner clutch is a heavy thunk when you engage the air. 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. The compressor clutch controls the power provided to the compressor shaft. the new AC compressor clutch bearing is toast!". This guide will help you diagnose the problem when you start hearing strange noises. Theres a rattling noise on my mazda 3 ac compressor. This could indicate either an alignment problem, or a clutch spring problem. That is because the compressor and clutch are not functioning (turning) at all when the A/C system is OFF. I'd pull the a/c belt of and spin the tensioner and a/c pulleys by hand. 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. If it does, then you are facing replacement of a worn serpentine belt, which is about a $300-$800 repair. submitted to our "DoItYourself.com Community Forums". The compressor works only when it is engaged to the engine and that engagement is through the air conditioner clutch. I was able to locate it to the … It sounds like the bearing is going bad. In any auto air conditioning system, there are several key parts. Mechanic's Assistant: Has the clutch been slipping? Over the past week, I have listened to it go from an occassional mild rattle to a significant but still random noise. Car AC Refrigerant. I know its coming from the clutch(I just replaced the serpentine tensioner). It gest faster as the rpms get higher, but the AC is still blowing cold. The loud noise when the AC switches on is another potential symptoms of bad AC compressor. No i mean ac compressor clutch is engaged there is a noise from the compressor It’s a Mercedes W124, the compressor is a Denso 10PA15C I think. It only was noisey when I turned on my A/C because of the fan clutch. 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 … These typically start when your AC compressor engages. Thread starter #1 I just bought my 2015 GT with 18,000 miles about two weeks ago. When i shut off the AC the clicking stops. Its worse if you find out that the compressor is actually bad and sent stuff through the system. Clanking or rattling: Loose internal mounts can cause rattling and clanking from the compressor. 57 Posts . There has been a grinding noise coming from the AC compressor in my 2010 XC60 since I owned this car. Website operating Nothing beats the comfort brought by your car’s air conditioner especially when it is hot outside. Or the serpentine belt slipping another noise you might hear from the compressor is a thunk... 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