It is slipping because when you run the AC and defrost it engages the AC compressor clutch, this extra load on the belt is enough to make it slip. Here’s how to shim the AC clutch on an 850, V70/XC70 up to 2000, S70, or C70. Sounds like the belt that drives it needs to be lubricated or tightened. Yesterday my AC clutch went bad. 1 Pressure Release • Before disconnecting any lines or removing the oil plug, always make sure refrigerant has been removed from the A/C system by recovering it with the appropriate recovery. After the shop changed the idler and belt on my truck, the belt squeals whenever the fan engages. On hybrid and electric vehicles, the air. Don't expect brakes to be totally quiet. I have thought about the AC clutch going bad but turning the AC on or off does not get rid or create the squeal, and the AC works as it should. When I installed a new serpentine belt I got a squeal/chirping noise. Mar 1, 2015 at 12:03 AM #5. Ford Fiesta Common Problems Solutions Hints and Tips. Hello, I have a 2006 Toyota Sienna with approx 64K miles. I pulled the AC fuse to determine that it was in fact the compressor. At first I thought this would be a simple fix, but now I’m realizing that it’s not. Easy to use parts catalog. When shopping for antique Motorcraft YB-3119 AC Compressor Clutch Coil made out of wood, make sure that you aren't just looking at the surfaces on the outside. Free Play Gain should only be checked in neutral as per the instructions. Four Seasons is a leading automotive aftermarket supplier of air conditioning and cooling system parts. 46 and they sell it for 26. She listened to it and said no she could still hear it. The AC pulley is attached to an electronic clutch, which allows the pulley to spin freely when the AC unit is not in use, but, once the compressor is activated by the AC switch, the clutch engages and the pulley drives the compressor. It works just fine though. Looking for suggestions, I have a 2000 C5 and recently the a/c compressor started making a squealing noise when turned on. Would replacing the entire AC compressor be more viable and better in the long run for my older vehicle. So, questions are, is it just the clutch or is it the whole compressor? Can you even replace just the clutch? If I swap the whole compressor, when I hook everything back up, do I have to get a vacuum pump to pull a vacuum on the system to recharge it or does it do that on its own? I actually see they have an AC clutch bearing they sell. Ranger & B-Series - Squealing bearings suspect AC compressor - Terrrible squeal under hood. When an air conditioner overheats, it draws more amps (a measurement of electrical current) from the circuit. I had a set of hoses made using the existing manifold fittings and connections, using the new barrier style hoses. To diagnose this problem, set the emergency brake, start the engine and depress the clutch pedal. The fan clutch is just what the name says, it is a mechanism that will clutch the fan on and off depending on the need for more or less cooling air to flow thru the radiator. Examining Air Conditioning Clutch Failures in the Field This guide can be used as a reference to diagnose clutch failures, and is specifically designed to help you differentiate between unwarrantable clutch failures and those that would normally fall under possible warranty consideration. AC Fundamentals 1-Basic AC. Unfortunately, over the last week or two, it started squealing at random times. Air Conditioning. The slipping more or less disappears above idling speeds. Belt was a little over. You can start to see the rubber surround that fails and causes the clutch to make a horrific squealing noise, then the AC light to blink and shut the compressor down. ac compressor clutch/coil removal DIY Here we go, as I promised, - enjoy! take a note of the belt routing before starting this procedure 1. If you hear a chirping noise as you press, it's most likely the clutch release, or throw-out bearing. Is your AC unit leaking?. Place this around the pulley in such a way that you can keep the pulley/clutch from rotating. These noises are usually any indication of a fault in the offing. The AC system may have a sight glass on the drier unit. Whining noise with AC. Yesterday I replaced the alternator. Is your AC unit leaking?. This is For Vw Golf Jetta Ac Compressor A C Clutch Gap Low Price I have actually owned and it was the most economical of them all. We are pleased to announce Long Reef Garage: With a long and proud history the garage has been operating since 1929 and we are very excited to continue this service to the community. It now squeals for about 10-15 minutes, not just at idle, and at a faster rate. Does your AC unit smell funny when you turn it on? Click here to learn why. 3 compressors have been installed all making the same noise. however same problem with the squeal!. Now suddenly it looses charge within a few days and I've left it for many months now with no charge. Ok, so I recently switched out my serpentine belt (82K miles) because it was squealing regularly. Transmission Clutch Diagnosis. Keep the clutch burnished. Wind noise, passenger and driver side 2. Examining Air Conditioning Clutch Failures in the Field This guide can be used as a reference to diagnose clutch failures, and is specifically designed to help you differentiate between unwarrantable clutch failures and those that would normally fall under possible warranty consideration. If you set it lower than this you may be overcooling, and losing 5-8hp from your engine as well ! I guess as the thermal clutch gets old, the bi-metal may go out of adjustment, or stick. I've tried WD40 and some spray on White Lithium Grease but the squeal just comes back. That means the clutch is spinning, but the transmission is not. Due to the complex construction of all automobiles, problems are bound to arise from time to time requiring maintenance. With the engine running, turn the AC to its coolest setting and the fans to the highest setting. The other noise assuming this is an automatice, i can only guess at. You probably already know that the clutch is the link between the vehicle’s engine and its wheels. Clutch dragging and making. If the squealing sound you hear associated with air conditioning is in your car, the diagnosis is usually simple. I can spray belt conditioner on the AC belt, it will stop screaming until it wears off, then start up again. The air conditioning clutch and coil were believed to have overheated and failed. Common Honda Pilot AC Compressor Problems Every time the AC is turned on, the compressor is in a continuous on/off cycle. Sometimes the fan clutch in your car will start making squeaking and squealing noises. 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. I have eliminated the squeal on the main serpentine belt. The throw-out bearing, sometimes called a “clutch release bearing”, is a simple yet important component that’s only in use when the clutch pedal is depressed. In a properly working air conditioner, a fan will draw air over the evaporator coils, where it is cooled, and then be re-circulated back into the room. I just installed a Vintage Air Gen IV system in my car with a Sanden compressor and March serpentine belt pulley set-up. Visit our website for HVAC Repair coupons!. Push the clutch all the way to the floor. I would apprciate any and all adive. > squeal when i dis-engage the clutch starting in first gear. Toyota Yaris ac clutch 7 Answers. Clutch control relay (£90); 2. Bought it in 2001 with 15k. Once the clutch and coil cooled down, the air conditioner began to function correctly. The compressor makes a lot of noise (rattles) when the AC is turned on. it all works long enough for me to smile and drive off only to return louder than. When the air conditioner is engaged, a squeal will be obvious if the serpentine belt is worn and slipping, if the belt tensioner is malfunctioning or if the clutch bearings in the compressor are going bad. my cherokee is a 97 so it was already made for 134A not freon, so i did all the work really simple and all, the next day i turned ac on MAX and a very obnoxious squealing noise occured, i can guarantee you its not my serpentine belt, it ONLY happens when the AC compressor clutch engages, with AC off its perfect, no squealing. annoying loud squealing noise when I turn my A/C on. Turn your AC on and if the squeal goes away in a couple of seconds it has to do with either the idler pulley or the AC pulley itself. I took of the serpentine belt and the noise goes away. AC Compressor Replacement in the DOHC Mitsubishi 3000GT/Dodge Stealth by Jeff Lucius Introduction These instructions supplement the instructions in the service manual for removing and replacing the air conditioning compressor in a the DOHC Mitsubishi 3000GT and Dodge Stealth. com at 130$ plus shipping. Sounds like a high pitched tone, just from 700 to 2000 rpm. We've got the what, why, and how it works, when you need it. I shut it off to keep from ruining the whole mess. NOTE: Noise from the A/C system may be heard as squealing, chirping or moaning noises, or as a vibration noise. Like many of your car's components, it is possible your clutch may wear out over time. Since there is no money to buy a new compressor and winter is upon us, I simply cut the belt off of the AC compressor. I took it to a shop this morning and the guy said he thinks it's the PS bearings making a little noise when extra tension is put on them by the AC clutch closing, but that he thinks it's nothing to worry about, "just old car noise" as he put it. I added an aftermarket R134a style parallel flow condensor to the mix. Revised and updated new shock absorber top mounts should be fitted. Order Compressors & Clutch for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. There is no way of attaching a scan tool or looking into the bellhousing while the clutch is under load. If you start your car and turn on the air conditioner or heater and. Does this mean I have a bearing failure or a clutch failure?. This, however, is not a permanent fix and the problem should be tended to by an AC repair professional as soon as possible. For the past several months my 2010 OB 2. Practically everything has been changing the AC system except for the lines. Then it would make a noise that sounded like a belt squeaking or pressure releasing. If you start your car and turn on the air conditioner or heater and. I'm using a new dealer shop for maintenance, and it's been recommended that I replace the DRIVE BELT, TENSIONER, IDLER and CLUTCH because "drive belt clutch and pulley are locked". Hello, I have a 2006 Toyota Sienna with approx 64K miles. If it does not, shut the engine off and disconnect the negative battery cable with a socket. i've At idle speed up to 2nd gear the A/C compressor clutch cycles on and begins to squeal. A bad car AC relay remains a common problem for many years, make and model automobiles. A compressor, Condenser, Evaporative (Evap) core, Expansion valve, receiver dryer, hoses and lines, thermo sensor and the controls. Easy to use parts catalog. Loud squealing noise when accelerating HELP. The air conditioning and defrost connect to the original heater-defrost diffusers. Kubota Cab and Air Conditioning - AC Condenser - AC Compressor Clutch - AC Belt - Blower Motor/Blower Fan - AC Evaporator - AC Expansion Valve - Pressure Switches -. Ford Fiesta & Fusion upto 2003 1. Meticulously formed to OE requirements for ready fit and reliable function; Premium-grade, highly durable design. So my AC compressor clutch is also worn and squealing - if I replace my pulley bracket and serpentine is my worn AC clutch just going to wear the new pulley out What I am asking here is is this the time to replace that damn clutch Which I am led to believe that will release all my Freon and will have to refill after replacing the clutch--- if I. Luckily, there are only a few issues that can be creating this problem. 2's don't have a a/c relay (magentic clutch relay) unlike other Toyota models. Your vehicle's clutch should always remain in top condition, but over time you might find it needs replacing. Use a belt wear gage, if necessary, to check for wear since EPDM belts rarely show signs of aging. This case study will help you to test a thermal fan clutch on any GM vehicle equipped with one. ac compressor You mean the clutch is frozen until you turn on the ac? Then the clutch both (1) becomes moveable and (2) engages the pulley and turns? I would think the clutch should turn along with the pump since these two appear to be connected by a shaft. The blown fuse scenario: Fuses sometimes short out. Stand in front of the AC compressor at the front of the engine. Start the engine and let it warm up. You need to either replace it or get it re-gapped. As kostura said, this is just a simple matter of having a loose serpentine belt. JEEP CHEROKEE AC compressor squealing My wife and I picked up a 97 XJ last night. It gets louder with rpms but sounds like the bearings. This condition can be “babied” for a while before turning into symptom #6 or #7. As for the cycling, (on/off on/off), this sounds like a low pressure switch doing it's job, a check of the refrigerant level will determine this. Clutch kits. Any one got any solutions? I'm wondering if the AC compressor is going bad it works great though. And Rod’s technicians were heroes, fixing the truck properly without breaking the bank. Thanks for your question about your 1990 Silverado. Check out the ClickMechanic price for a Ford Focus Clutch replacement in the UK. When I was done I burnished it like the instructions said. ok i my ac clutch isn't working i can turn it by hand. when the ac compressor clutch is spinning the noise is far less intense but when its not spinning the noise is really annoying. Replacing the fan clutch assembly took care of the problem. JEEP CHEROKEE AC compressor squealing My wife and I picked up a 97 XJ last night. I know the bearing can be purchased from an auto parts place but I have not seen the clutch, maybe suggesting the clutch is typically not replaced while the bearing is. Check for slop in the clutch. Honda Civic: Why Do I Hear a Loud Squeak When Turning the Wheel? Your car squeaking can sometimes be embarrassing. Shim the AC Clutch. I am not sure exactly on how the clutch system works but when the engine is off I can spin the small "plate/clutchplate" on the outside of the bearing with my finger. The AC compressor is the heart of the air conditioning system. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Ive been a tech for the better part of my life and can tell you the baby powder "trick" works when I have a squealer after getting it wet or oiled but you need to have a good known belt in the first place. > > gw > > > "Gary & Emily" <[email protected]> wrote in message > news:[email protected] > > hi, my 99 ranger (manual transmission) has been making a sqealing noise > > when i let out the clutch in first gear - it used to be more noticable in. Compressor Works 638968. 7l is making a squealing noise only when it hits 1500 rpm and above. When someone asks us, "why is my air conditioner so loud?"I often respond with, "why is your truck so loud?" Just as with your truck, a noisy air conditioner is a complex piece of machinery with many moving parts, all of which interact with each other. Does this mean I have a bearing failure or a clutch failure?. If I change this without a vacuum pump and do not replace freon right away will it cause my new (old) compressor to go bad?. The fan clutch is just what the name says, it is a mechanism that will clutch the fan on and off depending on the need for more or less cooling air to flow thru the radiator. It is a thermostatically controlled device that when. Any guesses on what. In this article we will tell you how to troubleshoot and make sure that the fan clutch is the problem and not something else in your automobile. So I just got ac in my car again and bought a new belt and recharge the ac. > squeal when i dis-engage the clutch starting in first gear. The belt is relatively new with only around 10,000 miles on it. Hyundai 97701-2H102, 97701-2H140. They literally transfer the power from the engine to the transmission, making the vehicle go. When the ac system is started the clutch squeals (slips) trying to overcome the excessive pressure but when it does engage the system seems to be fine. The good news is there is no more squealing or chirping!! I did try the windex on the constant chirping with the AC on and it stopped it for a few seconds so I figured it was a belt issue. If you start your car and turn on the air conditioner or heater and. 0L V6 Engine 79,000 miles on it. Can a bad cooling fan clutch cause the belt to squeal? I have had the air compressor replaced and all new belts. I'm wondering why my when I turn my trucks AC on (only when I'm driving not stationary at idle) does it make a weird squeal sound. There are many reasons why your AC could be making noise, some easier to fix than others. I've pulled it into the garage and looked at the belt and it seems to be completely stopping as the pulley continues to turn, which results in the squeal. Unscrew and lift off the top panel. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Symptom - Compressor Clutch Noisy. Slippage: This is by far the most common problem. When the AC clutch doesn’t meet the belt correctly you’ll have similar symptoms to low refrigerant charge… warm air, revs dropping every 10 or 20 seconds, etc. So I just got ac in my car again and bought a new belt and recharge the ac. The belt is relatively new with only around 10,000 miles on it. The 1999 Dodge Intrepid has 4 problems reported for squealing noise & burning smell from ac. Before going to the repair shop, though, you can check to see if the following reasons are causing that unnerving scent. Other possibilities could also be the AC Compressor clutch or clutch bearing. If it squeals for a few minutes it breaks the belt. When I got home I determined that it only makes the noise when the AC clutch is engaged. Transmission Clutch Diagnosis. The throw-out bearing, sometimes called a “clutch release bearing”, is a simple yet important component that’s only in use when the clutch pedal is depressed. Faulty compressor clutch: If the clutch is not engaging with your compressor, than your compressor can't maintain the correct pressure. The dome, underhood and hazard lamps operate without the ignition switch on, so check these areas first. Squeaky brakes are a serious automotive annoyance. Transmission Clutch Diagnosis. Like many of your car's components, it is possible your clutch may wear out over time. This, however, is not a permanent fix and the problem should be tended to by an AC repair professional as soon as possible. Free Shipping and available now! See OE cross references for TEX-81000400. Clutch Kits. Any guesses on what. They literally transfer the power from the engine to the transmission, making the vehicle go. The customer was thrilled: He’d been told that he’d need a new transmission. This particular clutch controls the compressor, which pressurizes and pumps refrigerant through the air conditioning system. I am changing the AC Compressor, because the clutch is squealing loud as hell. If it doesn't, something is wrong and needs to be investigated. Keep your ride running reliably cool with the premium, ready-to-restore design of 4-Seasons' new OE replacement A/C compressors. I was in an accident a year ago and replaced the condenser and the dryer before have it vacuumed and refilled. Easy to use parts catalog. Well yesterday I turned on the car, no problems. My car has been making squealing noise for 2 weeks or so. The squealing does not repeat as the compressor cycles on and off, so I suspect it's the clutch or bearing and once it warms up a little it gets quieter. Is your AC unit leaking?. Since there is no money to buy a new compressor and winter is upon us, I simply cut the belt off of the AC compressor. The clutch is mounted on the front of the pulley to engage the compressor as it cycles. > squeal when i dis-engage the clutch starting in first gear. Does this mean I have a bearing failure or a clutch failure?. These noises are usually any indication of a fault in the offing. High Quality Genuine & OEM parts. Some fixes are minor and require little work. I have narrowed it down to the power steering pump pulley. Thankful that I could remove the Targa top, I would have melted without AC or an open top. The clutch is made up of various mechanical parts and if any of them break, it will cause your clutch to stop working. The pulley that the belt runs on is on a bearing that fits on the housing of the compressor. Turn on the AC. Don't expect brakes to be totally quiet. Ranger & B-Series - Squealing bearings suspect AC compressor - Terrrible squeal under hood. Compressor looked fine. An air conditioner compressor beginning to fail, a compressor pulley or serpentine belt that is beginning to wear out or the compressor clutch can cause a rattling noise. It didn't make the initial really loud squealing while I had the windex so I couldn't test that. 2007 JEEP LIBERTY AC COMPRESSOR MAKING NOISE REPLACED COMPRESSOR ORIFICE TUBE AND ACUMULATOR DRYER NOISE WAS WORSE - Answered by a verified Jeep Mechanic. What is an AC clutch compressor. Probably it is the belt that is squealing. Engine belts and drive pulleys are used to power the water pump, air-conditioning compressor and the alternator of an automobile. When the compressor came on it just began to squeal as it would slip. It's going to be your radiator fan clutch. A squeal at idle means your belt is too short, the tight belt squeals as it rubs on the bottom of the primary clutch. The Town Crier publishes six different glossy magazines throughout the year. The pulley should be spinning at all times. This is a port hole that allows viewing the actual Freon inside the system. AC compressor clutch won’t engage – Toyota; Highlander. When I was done I burnished it like the instructions said. I looked at the clutch while running w/ ac on and noticed it would turn intermittently (not sure on the spelling). A big note, when you get the clutch off put the tool back on and try and move the shaft up and down and sideways. To offer submissions to editorial, contact editor Bruce Barton at [email protected] Ford Fiesta & Fusion upto 2003 1. Yes it does have AC. Unfortunately, a car or truck air conditioning system can be cost prohibitive to fix. You probably know how your vehicle sounds when it’s running properly. I was in an accident a year ago and replaced the condenser and the dryer before have it vacuumed and refilled. when ever i go over a small bump on the road or decelerating the sound appears. > > gw > > > "Gary & Emily" <[email protected]> wrote in message > news:[email protected] > > hi, my 99 ranger (manual transmission) has been making a sqealing noise > > when i let out the clutch in first gear - it used to be more noticable in. A 1999 Silverodo has its own drive belt, and a top off for the system. I really don't want to beat it with a bat but if thats what it will take to shut it the hell up then so be it. Find JEEP WRANGLER Clutch Kits and get Free Shipping on Orders Over $99 at Summit Racing! Clutch Kit, Centerforce II, 1 1/8 in. Order Compressors & Clutch for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. The good news is there is no more squealing or chirping!! I did try the windex on the constant chirping with the AC on and it stopped it for a few seconds so I figured it was a belt issue. Could be a few months or a few years. To advertise, contact our sales department by calling (650) 948-9000 or email [email protected] With the clutch coil activated, you can remove the retaining nut from the compressor shaft. However, the compressor needs to run only when the air conditioner is turned on. Fan and Fan Clutch. Not the AC clutch sticking - it is supposed to stick, the AC compressor has a problem, high internal friction, or the clutch is slipping. Running the AC while something is wrong will only make things worse (and result in a bigger repair bill). The squealing isn't constant though, it comes and go's but it's a regular thing. AC Compressor Replacement in the DOHC Mitsubishi 3000GT/Dodge Stealth by Jeff Lucius Introduction These instructions supplement the instructions in the service manual for removing and replacing the air conditioning compressor in a the DOHC Mitsubishi 3000GT and Dodge Stealth. The 2000 Xterra's Air Conditioning is sometimes cool but may not work other times. A clutch can last 50,000 to 100,000 miles (depending on make and model), but clutch service life is greatly affected by stop-and-go city driving, frequent pulling of heavy loads, and "riding the clutch" (resting your. It kept doing this cycle as long as the AC was turned on. 2's don't have a a/c relay (magentic clutch relay) unlike other Toyota models. I have a 2008 XC70 3. truck was squeaking pretty bad so I opened up the hood and quickly identified the problem. If it is happening constantly, you may have a low charge. Today I bought a new one and Installed it. Free Shipping and available now! See OE cross references for TEX-81000400. I have thought about the AC clutch going bad but turning the AC on or off does not get rid or create the squeal, and the AC works as it should. The field coil when energized becomes an electromagnet which then magnetizes the Clutch rotor and Armature plate. I picked up a can of ez chill because i had no refrigerant at all. Ford wants $375 to replace it, but I found the clutch online for $100 and am considering doing it myself. Clutch Slipping is a condition that occurs when the armature plate fails to engage and rotate in synchronization with the clutch rotor. The roar of your vehicle’s engine as you rev it is a beautiful automotive sound. When it starts squealing the clutch slows down like it isn't getting enough power. (Please read feedback)The Clutch includes all parts needed to replace your old clutch. Order Ford Explorer A/C Clutch and Components online today. Air-conditioning noises can indicate proper operation as well as an indication there's a problem developing or present. It's going to be your radiator fan clutch. In addition to the AC compressor clutch, we also talk about repairing the AC belt idler. I have a loud squeak when my clutch kicks in at times but not all the time and sometimes it is louder than you know what! Belt is tight and pressure i AC clutch squeak 2003 frontier - Nissanhelp. Did not get a chance to try turning lights or AC on when driving. The AC compressor is a pump that is driven by the engine crankshaft through a belt pulley. Bad AC Compressor Clutch Symptoms. Squealing noise when A/C is turned on. I was able to do this on the vehicle without evacuating the freon gas, for a total outlay of less than $50. when ever i go over a small bump on the road or decelerating the sound appears. This business servicing Mandurah Region is a local SME in the Car Air Conditioning category. A bad clutch bearing would squeal almost all the time - but it would sound more like a rattling/grumbling/scraping sound. The initial cranking in the morning causes the alternator belt to really squeal. She listened to it and said no she could still hear it. 0L V6 Engine 79,000 miles on it. The Air conditioning (AC) system in your Subaru is made up of the following. Honda Civic 2002 SI. ok at idle(600-700rpm) when you turn the ac on you can feel the truck somewhat shake, very minute, but almost like a slight misfire. I had some noise from the fan every once in a while before hand, just thinking it was a cold engine warming up. I've pulled it into the garage and looked at the belt and it seems to be completely stopping as the pulley continues to turn, which results in the squeal. ok i my ac clutch isn't working i can turn it by hand. If it squeals for a few minutes it breaks the belt. I was thinking maybe the clutch on the AC possibly?. Same thing happens when the AC is turned on. The slipping more or less disappears above idling speeds. Determine if the squeal is under the hood or in the brake system. Clutch kits. For some time the A/C system has had a slow leak but lasted many months before needing recharge. There was only 1. Good news!! However, now whenever I turn the AC on the clutch engages and starts to squeal. There are many reasons why your AC could be making noise, some easier to fix than others. Another part that's prone to wear is the compressor clutch. The belt squeals and gets louder when I turn the AC on and it also gets louder when I step on the pedal, but eventually stops after a few seconds. 46 and they sell it for 26. 0, but this one's got Ford stumped. The port hole should be clear with compressor off. Whining noise with AC. Toyota AC Light Flashing; FJ Cruiser. Hyundai 97701-2H102, 97701-2H140. At first, once I accelerate to a faster speed, it cancels out the idle squeal, and eventually stops at all speeds. My 2004 dodge ram 1500 4. Turn the AC compressor (center nut on the pulley face) by hand. I didn't check the tolerances on the compressor, but the noise changes as the compressor clutch kicks on and off. The sound has now progressed to being a squeal noise as well as a tad vibration. A compressor, Condenser, Evaporative (Evap) core, Expansion valve, receiver dryer, hoses and lines, thermo sensor and the controls. “When an air conditioning system is rapidly starting and stopping, it’s called short cycling,” says Gabriel Carini, the founder and owner of our San Diego air conditioning and heating company. If the air conditioner is the source of the tripping, it may be overheating. The "plate" that sits on the outside of the pulley is making the noise. At first, once I accelerate to a faster speed, it cancels out the idle squeal, and eventually stops at all speeds. If it does not, shut the engine off and disconnect the negative battery cable with a socket. The compressor may be loose. A bit of elbow grease could give you an amazing piece. Should I of went with AC Delco ? If your fan clutch gets stuck engaged. The pulley should be spinning at all times. Click below for replacement clutch kits:. The clutch that turns the A/C compressor is going bad. Squealing noise when I turn on the ac. Clutch kits. Mar 1, 2015 at 12:03 AM #5.