Car Ac Compressor Clunking Noise

A couple of day's ago my A/C starts to make knocking noises. AC Compressor Control Solenoid Valve Fits Volkswagen Jetta Sanden PXE16 PXE14 1K0820803E - VW GTI, Golf, Passat, Tiguan, Jetta TDI and more - Audi A3 - Control Valve, Compressor Pressure Valve. There's probably high pressure building up in your system, causing the. When i turn on my A/C it will start knocking, looking and listening under the hood it's clearly coming from the A/C compressor (hold a long handle screw driver against it to my ear), as soon as I turn off the A/C it stops. it's like backfiring except through the carb rather than the exhaust. 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. With the engine running, turn the AC to its coolest setting and the fans to the highest setting. Fixing a Vibrating and Noisy Car AC Compressor. Automotive air conditioning troubleshooting and Heating problems can be very difficult to troubleshoot alone. I have Honda Accord 2008. I took the car to him a few years back to have him replace the timing belt and serpentine belt. Car makes growling noise since A/C Compressor was replaced. Faulty air conditioning systems may make a similar noise as well, especially if there is a problem with the serpentine belt, which can get stretched and worn out. I know it'd probably run me $100-200 for the average local AC company to come out and look it over and install a new capacitor if that really is the only issue. She heard the clunk sound and felt warm air blowing from the vents. If you're about to get in the car, please read on. This vital component is what sends the refrigerant through the air conditioner’s lines and allows for heat exchange. Specialist replaced the line from condenser to evaporator, one month ago, and refiled the system with new refrigerant, I believe that he checked the refrigerant pressures and put the correct weight of refrigerant. If you have been looking for Delphi Maruti Suzuki Swift Dzire/Ritz Car Ac Compressor dealers, your search ends here as you can get the best Delphi Maruti Suzuki Swift Dzire/Ritz Car Ac Compressor distributors in top cities such as Delhi NCR, Mumbai, Chennai, Bengaluru, Kolkata, Chennai, Pune, Jaipur, Hyderabad and Ahmedabad. Air conditioning whine. I checked the air blowing inside my car, and it was definitely colder, but not really cold like it used to be :-( When I turned my car off to start cleaning up, I noticed I could hear a hissing sound from under the hood. Apparently, the AC Module to AC Compressor wiring is defective and needs replacement? Questions: 1. Learn about your AC electrical system with diagrams. Is the wiring. The car makes the noise both hot and cold. " This type of noise from the compressor can indicate a dangerous situation. Why does the Air Conditioner compressor cycle on and off even when it is hot in the car? for a 4 doors "normal transportation" car a/c compressor, the low side. Just before this component fails, it starts hard-starting, which means struggling to turn on. Frequently these are now regulated by electronics to cool only what is required and not to run flat out - this saves noise and fuel. If necessary, they will also be able to replace the AC compressor for you. I took the car to him a few years back to have him replace the timing belt and serpentine belt. Ford AC compressor air gap, Ford AC compressor oil capacity, Ford AC compressor black death are all things to look for to determine your compressor warrants replacement. In mini split system, the typical sources of noise is the condenser which is located outside the house and the evaporator which is inside the house. As to what nitronaught was saying, the compressor for my car is also very expensive because it's hard to find. This is a typical thing to replace, and also the sway bar bushings. Find the top 100 most popular items in Amazon Automotive Best Sellers. When the ac is switched on. Mauris placerat eleifend leo. There are many reasons why your AC could be making noise, some easier to fix than others. The top supplying countries are China, Japan, and Singapore, which supply 98%, 1%, and 1% of car ac compressor noise respectively. I took the car to him a few years back to have him replace the timing belt and serpentine belt. The Nash-Kelvinator corporation used its experience in refrigeration to introduce the automobile industry's first compact and affordable, single-unit heating and air conditioning system optional for its Nash models. The clunk sounds like it's coming from under the passenger-side floor, but the noise is definitely associated with the cycling of the AC compressor under the hood. Aging Belts: Older AC units in your car are driven by air conditioner belts. I've been having an issue with my 2007 Honda Element EX 4wd Over the Past 2 1/2 - 3 months I've had a clunking noise coming from what I believe to be somewhere in the front end of my suspension. Only happens with the AC on and happens every 10-15 seconds, sounds like it is coming from when the AC engages and disengages / the fan in front of the compressor turns on. When the aircon system is turned on, the compressor pumps refrigerant vapour under high pressure to the condenser. Leading up to this conclusion I changed the serpitine belt and tensioner wheel. I pulled over to curb and stopped car. I hear the noise when turning the steering wheel all the way or driving over pot holes. It started 2 months ago, when I first start my car, there is a humming noise coming from behind the glove compartment area, and the noise goes away after 10-15 seconds and never comes back while driving. The car's thermal management system is working to cool off the batteries. My car is making an annoying chirping sound,i already replaced waterpump,tension pulley,ac compressor last week,and alternator about 5-6 months ago,what else can it be,i really appreciate any help,car runs fine,except annoying,embarrassing noise. Wheel vibration with speeds in excess of 50 mph 4. I think it has to do with the belt or possibly the condenser fan. The vibration can lead to loose hardware, possibly in the compressor's mounts or elsewhere. AC Compressor Control Solenoid Valve Fits Volkswagen Jetta Sanden PXE16 PXE14 1K0820803E - VW GTI, Golf, Passat, Tiguan, Jetta TDI and more - Audi A3 - Control Valve, Compressor Pressure Valve. The car air conditioner compressor will involve many moving parts that include a piston and valve. The sound is loud enough it attracts attention of other people. How to Fix Your Car's Air Conditioner. But I have no clue what to expect if its the compressor. There hasn’t been a belt on the car for the ac in about a year. It could be that it has only just started to make a noise. If your compressor clutch doesn't engage, it can be because the low side pressure switch is keeping the compressor from running in a low refrigerant condition to protect it from damage. Aenean ultricies mi vitae est. 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. If you suspect that your AC compressor or another component of your vehicle's AC system is having issues, have the system diagnosed by one of our professional technicians. 94 Accord EX - 4 banger VTEC, auto I'm concerned about a new noise coming from what sounds like the front passenger side. The only "fix" would be a new compressor. She described the car as feeling like it was miss firing upon acceleration. Each time the system starts a cooling cycle, many. This will save you time and money with a. It is of great help for a variety of tasks. What is an AC Compressor? At the basic level, an AC compressor is a mechanical pump. There's probably high pressure building up in your system, causing the. Bad AC Compressor Sound. The type of compressor used by many cars in the UK has changed drastically since that time so if your model is say 2003. The fix: To get rid of the noise, you’d have to replace the whole compressor since it is a single, sealed part. These belts are not always connected to the system (since they're only needed when the compressor is running). Otherwise it's pulley time. Keeping the batteries cool is vital to prolonging their life, and preventing early capacity loss. If the compressor is on a belt by itself, I guess you could remove the belt. 3 car, then the AC compressor will run all the time in your 98 and get cooked. If it runs for a few minutes and I turn it back off and on manually it's quiet as it should be. I was driving my car about 40 mph. A car's serpentine belt drives multiple components, including the engine, alternator, power steering pump, water pump and the air conditioner compressor. A harsh grinding noise often indicates trouble in the compressor. Browse your favorite brands affordable prices free shipping on many items. The compressor may be loose. Chevrolet Silverado 1500 Rattling Noise From AC Belt Tensioner. The sound does not come when I park my car on even flat surface. Buzzing sound from ac compressor is absolutely normal for hybrid cars, it is more prominent when turned on the ac for the first time especially in hot days, or after you haven’t been using the car for a while, it’s just the compressor that works harder to cool down the ac system. The pitch of the whine raises with an increase in RPM and the noise only happens when the compressor is engaged. Learn how they work together to remove the heat from your automobile. An AC clutch compressor is a type of compressor that derives its power. Another $ 300 or so for labor and recharging the system. It returns immediately when I turn off the AC. How to tell if you need to recharge your AC system when your car AC compressor isn't turning on. He put the screen in diagnostics mode to show me that the Model S uses the same motor for running the AC compressor as it uses for the battery cooling. 6 here and it seems Ive got a real squeaky a/c compressor pulley. There are many reasons why your AC could be making noise, some easier to fix than others. The A/C compressor pulley wobbled and made noise when I spun it. Then when the unit kicks on they could hear a noise. Since it seems to work in your 98, I wouldn't be afraid to drive on it a little bit and see how it goes, nothing dramatic will happen right away. The Nash-Kelvinator corporation used its experience in refrigeration to introduce the automobile industry's first compact and affordable, single-unit heating and air conditioning system optional for its Nash models. Tesla Model S Air Conditioning Noise: This Is How It Works Follow Torque News on Thought I would let everyone know that Tesla Service changed the compressor on my Model S, and the car is. This can be replaced without replacing the entire compressor (or unit as your mechanic called it). Very often the failure of a major component, a compressor for example, is caused by a smaller failure that went undiagnosed for a while. A little noise when your air conditioner starts is normal. Wind noise, passenger and driver side 2. Condenser clunking noise Mine is a 4 ton 14-15 SEER American Standard, and everything runs great and quiet, including the Alliance compressor. Most likely cause: Your compressor. It isn't related to going over bumps. Another $ 300 or so for labor and recharging the system. The noise was definitely a bearing sound. If your car makes noise when accelerating or turning, don't ignore it. The Nash-Kelvinator corporation used its experience in refrigeration to introduce the automobile industry's first compact and affordable, single-unit heating and air conditioning system optional for its Nash models. Why should you replace your Volvo S40 AC compressor? Your AC compressor affects. Aenean ultricies mi vitae est. A new AC compressor for your Volvo S40 may be expensive, but you have plenty of options. When the compressor kicks on you can usually hear a click and feel the engine struggle with the extra load. A lot of times these will go bad, because there's a ball an socket right here. But if your air conditioner sounds like it’s screaming, turn it off right away. While Black Death is not the same as the deadly plague during the 14th century, a car A/C system experiencing Black Death will be infected like the plague. Eventually the clutch shaft actualy failed and i had to remove the drive belt to be able to drive home. If your AC compressor makes a humming noise or is hard to start there's a chance it is low on oil. When your air conditioner won’t work, put on your DIY hat, take a look at the system, and try to figure out what’s wrong. It's a loud "clunk. They all let unwanted noise leak into your RV. by Valerie Johnston on. The noise stopping for a second when you put on the defroster also makes sense as your car automatically engages the air conditioning when you put the defroster on. The medics strapped an automated chest compressor on Verma and whisked him to the hospital, where he would receive the Arctic Sun protocol (medically induced hypothermia to reduce the risk of. The spark plugs can also produce clicking noises on their own if they become loose. Chevrolet Silverado 1500 Air Conditioning Compressor May Fail - 11 reports. It's a little annoying inside, but outside it is really loud. Refer to Clean the Condenser or the product use and care guide for further information. Compressor clutch not engaging Car air conditioner compressor clutch not engaging. Noisy aircon compressor - posted in Maintenance & Repairs: Hi all. The car was running fine before the belt. This happened 135 miles from home and removing the belt also stops the power steering!. Automotive AC can be one dangerous system to work on. And replacing. However, if there is any problem with the engine or other parts, the car will make different types of noises. If the noise is similar to a scream, your compressor may be failing. This will save you time and money with a. The car air conditioner compressor will involve many moving parts that include a piston and valve. In 1954, the Nash Ambassador was the first American automobile to have a front-end, fully integrated heating, ventilating, and air-conditioning system. Another cause could be twigs or leaves that have clogged your system. I have a 1968 car if that is important in your answer. Belt noise will come from under the hood, and on most vehicles it is towards the passenger side. Plus, the car was smoking. Start Relays – As with the capacitor, the HVAC technician may try replacing the start relay, which is the only surefire way to determine whether it’s working right or not. Also, after 15 minutes of driving with the A/C on, there is a low whirring sound that is audible in the interior of the car. This noise didn't exist until I turned on the heater, and now it's making that noise. A car AC compressor failure will not engage and will often lead to skipping and squealing caused by the friction of the belt. I've been having an issue with my 2007 Honda Element EX 4wd Over the Past 2 1/2 - 3 months I've had a clunking noise coming from what I believe to be somewhere in the front end of my suspension. Shop A Works Z Works now! Buy A Works Z Works from Ebay. With the engine running, turn the AC to its coolest setting and the fans to the highest setting. Mauris placerat eleifend leo. I think it should be quieter than it is. Frequently these are now regulated by electronics to cool only what is required and not to run flat out - this saves noise and fuel. The compressor pumps, or forces, the liquid from the. A knocking sound my be heard from the engine at times with the air conditioning on. The type of compressor used by many cars in the UK has changed drastically since that time so if your model is say 2003. Aug 22, 2019 (Global QYResearch via COMTEX) -- The global Rotary Scroll Air Compressor Market Size is poised to attain valuation of US$ 14500 Million by 2026, According to a new research report by. If you get into your car and discover your air conditioning isn't working, one of these might be the reason. Comments: I have a 96 328i that I replaced the belt for the ac compressor today. Instant American 1958 Price Comparison to search For lower American 1958 prices, compare American 1958 Brands and Models. If you have been looking for Delphi Maruti Suzuki Swift Dzire/Ritz Car Ac Compressor dealers, your search ends here as you can get the best Delphi Maruti Suzuki Swift Dzire/Ritz Car Ac Compressor distributors in top cities such as Delhi NCR, Mumbai, Chennai, Bengaluru, Kolkata, Chennai, Pune, Jaipur, Hyderabad and Ahmedabad. Its pretty loud clutter. The situation: A high-pitched hissing or screaming sound. If the weather is cooler, it never makes this noise on initial turn on via the dash button. If strange noises are coming from the AC, there could be an issue with the compressor and it may need to be fixed or replaced. The noise was definitely a bearing sound. Find varying styles and colors for 110 Lo. those autozone refrigerant kits dont work. Automotive Air Conditioning Information Forum (Archives) AC Thumping Noise even with car off. The page about air conditioner parts has explained the principles, most air conditioner compressors use for compressing refrigerant. Two parts that make the air conditioner function are the AC compressor and the clutch. Air conditioner compressor overview. My 2012 forester x premium (5000 miles) starting making a clunking/popping noise last weekend on a trip to IL. but if you turn on the car w/o depressing the clutch and let it. I currently have 7500kms on it. I have a 2014 Honda CRV that is making a squeaking noise every so often after the car is warmed up. have multiple. She described the car as feeling like it was miss firing upon acceleration. Belt noise will come from under the hood, and on most vehicles it is towards the passenger side. My car air conditioner is making a squealing noise, is it still safe to drive as long as I don't run the AC? It makes a squealing noise which gets louder when I accelerate. Long story short, air conditioner compressor noises are usually bad news. The type of compressor used by many cars in the UK has changed drastically since that time so if your model is say 2003. Do not use the AC or the defroster modes until you get it check out! These things have been known to internally explode and contanminate the rest of the system with junk. Here are some common issues for the failure of a car air conditioning system. The compressor is typically engine driven via the accessory belt, and a clutch on the compressor is used to engage and disengage the compressor. it will drown out the ac. Why is shutting off an AC making a grinding noise so important? Since we know a grinding sound is never normal, we know something is wrong! An air conditioning unit is made up of a lot of different components. $119 in parts to fix the compressor. half-hourly flash-freeze con a abranchial air conditioning compressor noise needful 8000 btu air conditioning my air conditioning. Another $ 300 or so for labor and recharging the system. The rest of the car is in excellent condition and the price is very good. When AC is off for when the clutch is not engaged - no noise at all…. If you hear hissing, or worse, shrieking, coming from your compressor, turn off your air conditioner immediately and call a technician; do not restart your air conditioner until it has been looked at by a professional. This will save you time and money with a. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Obviously something is wrong since every other car I've owned hasn't done this. 0 D4D, started quietly and progressivly got noisier over time. A Works Z Works in stock and ready for shipping. com has a variety of options ranging in price from $183-$424. The Freon gets used up with the running of the air conditioning. The car’s thermal management system is working to cool off the batteries. A/C Not Working Properly. By the time I recharged it myself using one of those do it yourself kits and tried to figure it out it was too late, and I need a compressor, and you cant just change the compressor alone. This is a typical thing to replace, and also the sway bar bushings. : For some years now my car AC compressor would vibrate alot and make nasty noises. air conditioner compressor and alternator. Also, after 15 minutes of driving with the A/C on, there is a low whirring sound that is audible in the interior of the car. When you first turn on your AC, do you hear a chattering or rattling noise? If so, the electrical relay switch that starts your compressor may be. The AC compressor in your car is working hard to compressor refrigerant, often R-134a, in order to allow that refrigerant later to expand and create the cooling effect used to cool the cabin of your vehicle. This time we get to share some good news. But if your air conditioner sounds like it's screaming, turn it off right away. We offers a variety of Malachite Certified Green 1330ct to meet many budgets and needs. Make sure that it's the AC compressor that is. Every air conditioner has a motor called a compressor. The top supplying countries are China, Japan, and Singapore, which supply 98%, 1%, and 1% of car ac compressor noise respectively. I suspect that it happens at higher speeds but just cannot be heard. The Five Overlooked Car Maintenance Items How Preventative Maintenance Can Help You Avoid Catastrophic Repair Costs. Aenean ultricies mi vitae est. However, if there is any problem with the engine or other parts, the car will make different types of noises. Any one of the components can fail, or several can be affected by the same problem, such as leaks or blockages. but if you turn on the car w/o depressing the clutch and let it. That’s because the AC compressor is responsible for pumping coolant throughout your system and starting the process of cooling your car. When the A/C is on, the compressor sucks low pressure refrigerant in, and compresses it to high-pressure, hot refrigerant. The Five Overlooked Car Maintenance Items How Preventative Maintenance Can Help You Avoid Catastrophic Repair Costs. Having the same thing going on with my 2008 Impala LS at 42,000 miles. Car air conditioning noise? Does your compressor make a noise, is the clutch plate slipping or noisy , pulley problem. The AC suddenly stops working and blowing hot air sometimes and other times it works intermittently, problem was more frequent when driving around at lower speeds, showed it to a AC technician, the gas level etc was okay and compressor was running at the time but making weird grinding noises at idle though the noises stop when you rev above. The car makes the noise both hot and cold. He put the screen in diagnostics mode to show me that the Model S uses the same motor for running the AC compressor as it uses for the battery cooling. The noise from an air conditioning unit can have lots of causes depending on the type of unit. Open up the hood and listen for the AC compressor and clutch to engage. Is there noise from the compressor when it is cycled off? If there’s noise when the compressor is off (or disengaged) the bearings in the clutch hub could be faulty. have multiple. Yes, clutch is spinning the compressor and with the clicking noise on, air conditioner is working and blowing the cold air. With a car built roughly before 2000 when you press the AC button a sensor checks that there is sufficient refrigerant in the system to not damage the compressor and assuming that there is, it allows 12 volts to. If your AC compressor makes noise 07-01-38-010A, read this article. Step 6: Find any refrigerant leaks. The Freon gets used up with the running of the air conditioning. But when your air conditioner starts to get noisy or louder than usual, it is almost definitely a sign that something is wrong. How to deal with noise in the air conditioner compressor. Discover the best Automotive Replacement Air Conditioning Compressors in Best Sellers. It's just easier to hear over the engine now. It sounds to me like just a loud compressor, unless there is a squeal I'm missing in the audio clip. those autozone refrigerant kits dont work. There are a lot of important components to the air conditioning system of a vehicle. air conditioner compressor and alternator. Automotive AC can be one dangerous system to work on. With a good portable AC you can better control the temperature in the vehicle and create a much more comfortable environment and enjoy driving even in extremely hot conditions. Some vehicles with smaller engines are equipped with a Wide Open Throttle (WOT) switch. The a/c compressor clutch is the round pulley looking part on the front of the a/c compressor that is attached to the fan belt. At low speeds - 10 mph or less - there is a clunking sound that seems to be coming from under the hood near center of the car. If strange noises are coming from the AC, there could be an issue with the compressor and it may need to be fixed or replaced. But I've never heard of the relay itself clicking on and off when the engine isn't running. An internal motor mount spring , inside the compressor , is broken ( rusted and broke ). Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. The sound is loud enough it attracts attention of other people. The pitch of the whine raises with an increase in RPM and the noise only happens when the compressor is engaged. A little noise when your air conditioner starts is normal. She heard the clunk sound and felt warm air blowing from the vents. In my experience, all AC units make some noise - generally audible above any ICE noise. If it was my car, I wouldn't want to drive it long term without putting the delete pulley on. The problem may be a simple fix, however continuing to run your air conditioner when it is making a banging noise can result in further damage to your system. Now it has developed a strange problem. Perfect For The Family! 2006 Buick Rainier 4dr CXL AWD. Fixing a Vibrating and Noisy Car AC Compressor. Another cause could be twigs or leaves that have clogged your system. the clutch isnt working and it smells like plastic - Answered by a verified Mitsubishi Mechanic. Mauris placerat eleifend leo. The car was serviced by a Subaru dealer in January and they didn't mention it. Engine heat dries the area out after that and thus you no longer hear the noise. So I took it down to a guy I know that works on cars for a very affordable price. If you're about to get in the car, please read on. When the compressor kicks on you can usually hear a click and feel the engine struggle with the extra load. The clicking noise you hear is the air conditioner compressor clutch clicking the compressor on and off too quickly, this is called short cycling. She described the car as feeling like it was miss firing upon acceleration. Is there noise from the compressor when it is cycled off? If there’s noise when the compressor is off (or disengaged) the bearings in the clutch hub could be faulty. Find the Malachite Certified Green 1330ct you need and save. We are proud to provide quality Express Sterling products at discount prices from Ebay. Usually lasts 10-15 seconds before stopping. On some very poor roads the noise can be quite loud (as it will be in any car on the same road). 0 V6close to 28,000 miles, 1 year & 5 months since purchase. We have all experienced when an air conditioner kicks on and off in a house. Buzzing Noise-A sign that the AC Compressor is beginning to go bad, a buzzing noise may be heard when turning the AC on. Step 6: Find any refrigerant leaks. It will run smoothly when you turn a corner. AC man also told me that he has. Make sure that it's the AC compressor that is. Bad AC Compressor Sound. HOWEVER pay CLOSE attention to the AC. My car is coming to 5yrs old and the AC is getting noisy when it kicks in, I can also feel the vibration. How to Fix Your Car's Air Conditioner. 2007-2008 Cadillac Escalade Models. Sky High Car Audio 1996-2000 GM 4. I decide to turn off the a/c and it goes away. Mauris placerat eleifend leo. It is also helpful to figure out when the sound occurs. The car also idles rougher with the AC on as well. It has needed zero repairs yet, other than maintanance and brakes. I've noticed that my car , when the AC compressor engages, usually after sitting overnight, and it moderate/high humidity emits this loud, high pitched whining noise when it engages. So I took it down to a guy I know that works on cars for a very affordable price. 0 D4D, started quietly and progressivly got noisier over time. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Always use genuine Toyota R 134a system 0–rings and seals for R 1 34a air conditioning systems. The compressor is typically engine driven via the accessory belt, and a clutch on the compressor is used to engage and disengage the compressor. We're a proud family-run company and have been providing area residents with cooling comfort and relief since 1974. Ford Mustang AC Compressor Replacement. When the compressor starts, the initial load makes the belt slip and screech, which goes away once the compressor speed matches that of the. Humming noises can indicate the starting capacitor is starting to fail or a bad motor. Causes of an Air Conditioner's Buzzing Noise. Noisy Aircon Compressor Problem. my fourwheelers do that all the time, all i could tell you is that it happens when the engine is cold and won't take the fuel as fast as it's going in or it's running leaner than it should be. My car air conditioner is making a squealing noise, is it still safe to drive as long as I don't run the AC? It makes a squealing noise which gets louder when I accelerate. those autozone refrigerant kits dont work. Having a pan India presence including cities like Delhi NCR, Mumbai, Chennai, Bengaluru, Kolkata, Chennai, Pune, Jaipur, Hyderabad and Ahmedabad, you will get all your choicest brands under one roof from trusted Car Ac Compressor distributers. The AC compressor is the heart of the AC system. It makes it driving, in idle and without the heat or air conditioner on. It's not normal for the AC to clunk every time it cycles on/off though. Problems that cause AC compressor failure. The car’s thermal management system is working to cool off the batteries. I have narrowed it down to the area of the compressor, but I don't know if it's the compressor itself or just the a/c clutch. An internal motor mount spring , inside the compressor , is broken ( rusted and broke ). And you'll notice it fast. If your AC compressor makes a humming noise or is hard to start there's a chance it is low on oil. Mine sometimes makes somewhat of a clunk noise when the clutch on the AC compressor engages. We were cruising at approximately 80 mph. When you first turn on your AC, do you hear a chattering or rattling noise? If so, the electrical relay switch that starts your compressor may be. But I've never heard of the relay itself clicking on and off when the engine isn't running. It could also be the belt tensioner that allows the noise when the air conditioner is off, but the noise stops when the compressor is on and puts more tension on the belt. ac compressor noise at startup If this is your first visit, be sure to check out the FAQ by clicking the link above. The compressor hissing or shrieking is a serious situation: it means the pressure inside the compressor is too high. Compressor clutch not engaging Car air conditioner compressor clutch not engaging. This failure comes from quick wear and excessive heat buildup. Here are the Good Cherokee in stock ready to ship today. If the item is not in stock at your local store, then your store associates can order the item for you. Responsible for "compressing" the system refrigerant to increase the temperature, the AC compressor (also called the AC pump) is the classic "use it until you lose it" car part. The fix: To get rid of the noise, you'd have to replace the whole compressor since it is a single, sealed part. Faulty air conditioning systems may make a similar noise as well, especially if there is a problem with the serpentine belt, which can get stretched and worn out. Here are some of the more common types and causes of A/C compressor noise. I pulled the belt off and gave each a spin. Any one of the components can fail, or several can be affected by the same problem, such as leaks or blockages. It may be the air conditioning compressor clutch. The A/C compressor pulley wobbled and made noise when I spun it. The ignition system in a car can produce a clicking noise if it has lost its efficiency. Sky High Car Audio 1996-2000 GM 4.