A slipping AC compressor clutch is a sign of severe wear, shorted clutch coil or an incorrect air gap (explained later). We know the ridiculousness of it all. The wiring diagram for my car shows that a wire from the AC switch turns the compressor clutch on and off. Website Design ● Website Hosting ● Logo Design, Garden Slowdown – Peas Stopped, Cooler Weather, http://www.oreillyauto.com/site/c/detail/INT0/MF5.oap, Website Assistance for The Catalog Center, Website Design for Independent Medical Supply, LLC, Website Design for Alternatives Counseling, LLC. Get it as soon as Mon, Jan 11. A quick lap around the neighborhood confirmed the fix with higher RPMs! Solution: Refrigerant leaks can be dangerous, call a local HVAC company to find and fix the leak. I am having similar problem with my 2000 Avalon, and would like some specific help. I only intend on bleeding off a small amount to see if it will help! Compressor strongly cycles on and off and pressure fluctuates between 20 and 45, low side port tube is frosty but no freon will flow into system. Like the thermostatic switch, the turning on and off of the pressure cycling switch controls the operation of the compressor. I know folks online say not to use this – so I won’t be using that going forward. Stand in front of the AC compressor at the front of the engine. Strange. By the time I was done, my low side reads at ~35psi, and the high side ~250psi. thanks guys! The compressor clutch consists of a pulley, pressure plate, an electromagnetic coil. In your car’s fuse box, locate the air conditioning fuse and take it out. When the A/C clutch would turn off so did the radiator cooling fans. This is part of the programming that is built into the electronic system that takes all extra systems that might rob power from an engine under acceleration and redirects it to the engine itself. You said it goes from low to high. The compressor was fully on and the car just was barely cooling before I began adding the freon into the car – but it certainly was not keeping up and was not cool enough. I popped off the connecter from the low side and began letting out a little refrigerant at a time, until the high gauge began to drop and the compressor began to stay on. So, back to the hoses. It is dated 8\22\15. Prove it. Its at least as inexpensive a test as putting in more freon. Cautiously optimistic I went back out to the garage, started the car, reattached the gauge apparatus, and began to bleed out the system. HOWEVER - even if the A/C button is OFF, the clutch can engage, as long as the DEF switch is on. 0. Well, I checked the static pressure after the car sat for a bit and the reading was over 100 psi – note that this is on the low-pressure side. It seemed to work ok for a while, then I started to have the same issues. This switch is located on the metal canister next to the compressor. Like the thermostatic switch, the turning on and off of the pressure cycling switch controls the operation of the compressor. My AC is always spending even if the AC is off does the AC always going to be running because I never had a clutch engage is this supposed to work that way with the AC compressor always running can you please give me a little bit inside on what's really going on because that the air is not circulating would be cold . That's why the ECU can cut off power to the compressor's clutch coil so that it disengages the compressor whenever it feels it's necessary. He got that replaced and also replaced the serpentine belt while he was at it. The car no longer cycled the compressor rapidly after taking some R-134a out of the system and it cools very well. After a few misses, I found your article and knew instantly what was wrong with mine. AC Clutch kits are in-stock and available for all makes. I have a 2005 Honda Pilot. Posted in Uncategorized. Then, I attempted to turn on the air conditioner on in the car last week and again – very bad squelching noise coming from the car when the AC was on. Those cheap low-pressure testers that come with the charge kits only tell you part of the story. Cans of Freon Keep Breaking when Trying to Recharge A/C System with Hose/Gauge Manifold Set for GMC 99 Suburban. Took it back and told them what I experienced, so hopefully we can get it resolved. Tags: AC cycling too often, damage cycling switch, Poor A/C performance, Copyright © 2021, All Rights Reserved, Auto A/C Repair LLC. But the pulley will not rotate the AC … It is low on freon and that is the reason for the cycling. Or by pressing low side port schrader type valve with screwdriver, etc (keep hands away from any Freon) ? I am now thinking the compressor coils need to be cleaned. Air conditioning is a power intensive process, and it takes Thanks I think my Dodge Ram 2500 Diesel is got this exact issue. And when I need the cold feet in my backside after a hard day,the ac unit gets tired. Over and over maybe five seconds apart. I just bought one of those ac rechargers at AutoZone. I would welcome any ideas and suggestions. 99. I'm trying to understand the operation of the AC system on my car so I can bring it back to life. Found your article and it saved me $$$. If you get that the air conditioning (AC) compressor clutch is not engaging in your car, you might need to get some answers. One side goes up and the other goes down while the AC is running. Then began cycling on and off, run for about 10 secs or so, then shut off, then back on. In this article, you will learn what you can do during such a situation. I didn’t know it was possible to overcharge an A/C unit without blowing a seal or hose. Once again, many thanks for the owner for the post! AWESOME AWESOME AWESOME THANK YOU! Alright – test drive again! Turns out there is a second belt – an accessory belt – that controls the A/C compressor. Unusual cycles, such as when the compressor runs for a long time without stopping, shuts down briefly, then runs again for a long time, call for air conditioner repair. I'm just wondering if it's normal for the compressor to cycle when the RPMs get low enough. The pressure can also vary with the RPM of the car from what I noticed too. They said with the new freon they use now, repair folks are prone to overcharge the units. After taking some out, the compressor stopped kicking on and off – and the high pressure then stayed fairly stable between 325 and 350 psi. I released some refridgerant and now its working just fine. View attachment 2666241 I have a 2006 Dodge Caravan that I just (over)filled with Freon, next thing I know it quit working on me. Sum Up. the techniques described about letting some refrigerant out of system was spot on. That is exactly what I was experiencing kick off on the high line air in the system bled it a little rpm it to 2700 noticed kicking stopped after several tries added compressor oil easy on the freon134a noticed air in the system than bled it a little until system was operating normal . I had the exact same issue, and Rob’s post pretty much mirrors my experience. How does an A/C Compressor Clutch Work? Maybe i've got an idle/crankshaft sensor problem and the AC compressor is trying to tell me that. of freon” You need to have it all removed (freon) and pull a vacuum for 30 min. Thanks again!! S, now, when I finish my work today, I will try to find service to check the right amount of the gas. Amazon's Choice for ac compressor clutch removal tool. After I replaced a filter that was long overdue, my worry continued to grow. Again, this is normal operation.If you do find that your car’s air conditioner compressor i… In other words, my car’s ac is being a bitch! This car is with me since 1 week, second hand….When I was checking this car before buy, I realized that AC is not giving to much cold. Vented the refrigerant and the problem seemed to go away. So more was taken out until the high pressure would only be about 325 PSI at 1,500 RPM. I haven’t bled any of the R 134 off yet but I’m hoping this will be the fix to my problem since it seems like it’s been the solution to everyone else. The AC was not getting cold at all so I added some R-134a. If it does not, shut the engine off and disconnect the negative battery cable with a socket. But you cannot use your air conditioning … Continue reading "What Should I Do If AC Compressor Clutch Is Not Engaging" When the switch goes bad, it will no longer be able to measure pressure and will leave the clutch engaged the entire time. Problem fixed – no more squeek! This time, I revved the car up to about 1,500 to 2,000 RPM (since the Civic seems to idle at around 500 rpm). So, the compressor was rapidly turning on and off still. Bled it off, and it seemed to be ok, then took it to the dealer, they drained, refilled with the “correct amount” saying it was a little low, but now it’s cycling and pulling again, enough to be annoying (plus there’s an annoying rattle between 2000-2500 rpm). I came in and searched causes for the air compressor’s rapid cycling. AC was always good, until recently. . I noticed my A/C compressor stays engaged when I turn the A/C on. This frees up power and increases fuel economy when the A/C is not being used. Get a great deal on a quality A/C Clutch kit.A/C Clutch Kit.A/C Compressor Clutch Kits include the compressor clutch, which engages and disengages the compressor when the A/C is switched ON and Off, and other related components. Called up my mechanic and he basically told me the same thing – he said that if the compressor was rapidly turning on and off, it was because it was undercharged. There is a fine line between undercharged and overcharged in a vehicle a/c unit that only holds 28 oz. Very good information for the DIY car guy/gal out here. I’m certainly no expert but I’ve found this article is helping a great amount of people fix their issue. Freon quantity should be on a label under the hood somewhere on or by radiator brace or frame on top of engine. Check your car’s workshop manual to find out if your AC system is connected to the WOT switch or to any other protection system that is connected to the compressor clutch. Once I did that the gauge was dead in the middle right where it should be! 2010 Chevy Cobalt & my ac was cool but not cold. At idle with little airflow, the high pressure coolant isn’t getting cooled so it shuts off, but at highway speed, the added airflow cools the high side and it works fine. From the low side port, I know, but do you hook up a ‘cheap can gauge hose’ then pull trigger with no can attached and that does it ? Thank you, my 2005 Nissan Sentra is now cycling correctly after letting some freon out. Excellent ! Thanks a lot for your info. Thanks! If you begin to notice that the AC system is no longer functioning as it used to, and you suspect that the clutch cycling switch may have a problem, consider having the switch tested and replaced if necessary. We weren’t sure what it was and went on about the day. So we hooked the hoses up and the high pressure climbed very rapidly when turing the A/C on. You should never guess with refrigerant, you should have evacuated the system from the beginnng, and then weighed in the correct amount. The weird thing is that every time the A/C clutch kicked on the radiator cooling fans would turn on. Does this sound reasonable??? Just turn the A/C on and you should be good. I bought one of those low-pressure gauages for about $15 and a can of R-134a refrigerant with stop-leak in it. Ask Your Own Ford Question. 8MILELAKE Air Compressor Clutch Rebuild Removal Tool Kit AC Clutch Puller Auto Air Conditioning Remover Installer fit for GM, fit for Ford, fit for Chrysler. Good! AC clutch plate on and off. $20.99 $ 20. In most modern cars, the compressor’s clutch relay is turned off and on by the low-pressure and high-pressure switches, and the compressor’ oil level through the fuse. on off…every 5-7 second. At this point, I was pretty sure that it was overfilled and I wanted to see if the car was being kicked off because of high pressure – not low pressure. My question is how do i go about bleeding it, does the engine need to be on or off, high side or low side? Turn the air conditioning controls to MAX AC and start the engine. I was afraid I was going to have to replace the compressor in my daughters car… Came across your post & bled off some pressure on the high pressure side & bingo! The clutch is controlled by the A/C button, not by the blower switch. But, he did tell me that my AC was cycling on and off and it needed to be charged. It appears that it too was overcharged as the a/c boys are here today. Sure enough, he said that the low pressure was being sucked down to about 20 PSI and the high-pressure was kicking way up again past 400 PSI. Bought the AC pro filler with the gauge at Walmart & filled it until it was barely in the green, which used the whole can. The power to run the compressor clutch coil goes from the battery, to the AC Clutch Relay, somewere in the engine compartment fuse box, then it goes to the positive side of the AC compressor clutch coil; goes thru the coil, activating the compressor, and then goes to complete the circuit through another switch (high pressure protection switch) in the back of the AC compressor and finally reaching negative or … I thought for sure I’d be shelling out a hefty sum to replace the compressor. That was the problem – it was simply over-filled. AC system relays. Thanks so much for saving me an embarrassing trip to the AC guy! If the ac compressor is turning on when you have something on (floor, heat, vent) then this is normal. I was afraid I overfilled it – because the car was originally trying to cool before putting any R-134a into it. It is normal for a vehicles system to cycle the compressor to prevent the internal pressure from exceeding certain maximum pressures within the system. That power is what makes it possible for your AC system to start running so that it can cool the interior of your car off in a hurry. 5. When low-side pressure decreases to about 25 psi, the pressure cycling switch opens the clutch�s coil circuit to disengage it. Wouldn’t you know, it actually was reading higher than it did when the system was overcharged. The cheap gauge showed that I was on the low end of operating pressure, so I decided to add a bit more, then the compressor began rapidly cycling, and when it was engaged the engine was almost stalling at idle. 4.0 out of 5 stars 42. All the forums and posts I saw indicated that people that had this problem had no cooling coming out of the car. Both the pulley and the clutch should be spinning. Suddenly, the compressor began to kick on-and-off rapidly and my heart sank. This creates a short cycle that causes massive amounts of wear and tear on your AC system, potentially resulting in parts going bad or system failure. My 2005 Mazda 6 was having this cycling issue. So people, it is possible to overcharge your a/c unit. I was fortunate enough not to damage my system, you may not be so lucky. With recirculating the air and the outside temperature around 80 degrees, the car was putting out about 44 degree air from the A/C vents. As deal, I requested the seller to check the gas system, and they did it. Depends which side of the gauge you were reading. You are now able to diagnose the symptoms of bad AC compressor and understand the replacement cost. Your A/C compressor clutch is one of the most important parts of a vehicle’s air conditioning system. It worked! Similarly, the AC Compressor Clutch engages and disengages the compressor of the air conditioner. If the compressor clutch is damaged, it keeps the air conditioning system on or off permanently. Thanks! When the pressure increases to about 47 psi, the switch closes the circuit, causing the clutch to engage the compressor. Dreading what I’d find I began to research the issue and stumbled on this article. I added freon, then going down the road it would cycle and pull the engine down very hard. I have a 2006 Honda Accord and was encountering the exact same issue! Everywhere I turned, people said that if the compressor was cycling on and off quickly, that meant the compressor was low on freon. We don’t have the money to buy the gages and i have a feeling that if i just bleed some of the freon it will be fine. A huge thank you to bsntech, this post saved my butt! Catch me. After reading your write up and some of the responses you got, I released A/C pressure until the unit quit cycling on and off. good information ,exact same thing happened to me. If one of these three aspects has defected, then the clutch will never be engaged. The AC compressor drive belt rotates the compressor pulley at all times when the engine is running. Get in touch with us! Thank you, it worked like a champ on my 2004 Grand Cherokee. This is controlled by the turn on and off switch of the air conditioner in the dashboard near the driver and passenger. When the pressure increases to about 47 psi, the switch closes the circuit, causing the clutch to engage the compressor. Like you’re saying, the compressor kept cycling on and off. This saved me so much time, money and headache. Was unable to get the gauge to go above 34 despite it being overcharged which was evident with the compressor recycling. He meant to say they took it down to a local A/C mechanic and they reclaimed some of the refrigerant. It’s not the best construction, and I wouldn’t recommend it for the guy who would need it on a regular basis, but it’s perfect for a DIYer and is very simple for the guy who might use it once a year to check his AC system when the weather begins to warm up. So I took it down to a guy I know that works on cars for a very affordable price. The gauge that came withe the can was still needling at the very bottom so I began adding another can. 7. I said – “Is it because I overfilled it?”  He agreed and thought that I may have overfilled it – but said he hasn’t ever noticed a car doing that before. After all, we aren’t factories and such. Simple answer is yes. The colder the day is the faster it will cycle off. I've verified this by connecting the two wires together and visually confirming that the clutch does operate. Manny, Thanks for info too. YOU SOLVED IT! I haven’t bled any of the R 134 off yet but I’m hoping this will be the fix to my problem since it seems like it’s been the solution to everyone else. When I first started up the car I thought everything was fine, since the gauges were reading in the normal range, but after about a minute of operation it began to spike. I then called a co-worker that had a full set of hoses that can be used to check both high and low pressure. Compressor Failure. Here’s the link: http://www.oreillyauto.com/site/c/detail/INT0/MF5.oap. Thought I was going to be sweating through the summer. I bled a little more out for good measure and closed-up shop. Then look at the front of the compressor clutch. Is it time to replace the compressor clutch on my 2008 Mazda3? I read your post and it confirms what I already knew.My 2006 Honda Civic needed freon so I put 1 can in and it wasn’t enough to get it to the needed preasure so I added another one when it started cycling on and off rapidly.I have let out some of the freon out and it helped.I need to let out more to get it to stop completely.Thanks for the reaffirmation! You can rent one at Auto Zone free. Design by Final Web Design. Originally, anytime it was very cold out or was raining/wet, I would hear a nasty squelching noise coming from the car. Thank you so much, you saved me a ton of money with this fix! Once I got to a safe pressure on the high side (225-250psi), I reattached the low side gauge. Some engines use a dedicated drive belt to drive the AC compressor, while others use a drive belt that drives multiple components. All is well but what the heck happened? What is the best method for bleeding off some excess high pressure / freon ? Why? it worked for me . Is an AC compressor's clutch supposed to cycle off when the RPMs become low enough? She’s cold when it’s hot, hot when it’s cold. Burnt Fuse/Bad Relay. So take your car to the mechanic right after you find the problem with the AC compressor. This is an otherwise well running 1998 Taurus. Take it anywhere else more than likely you’ll be screwed . Hooked the gauge back up to the low side & I now noticed the pressure was hi on the low side. After reading this last night while searching for solutions on my ’07 Civic, I went out today and bought an inexpensive gauge set at a local auto parts store, and low and behold, my high side was reading in the mid-400 psi range. Some of the freon was taken out of the vehicle and the guy said there most likely was some air in the line that wasn’t helping things. We will see, as this is just the first day and the a/c boys are still here. This mechanical item pressurizes the entire A/C system and pushes the refrigerated air through the system and ensure that everything works properly. But, I explained to him how it was working fine – and somewhat cooling – before putting any refrigerant in – then it started kicking on and off after adding 3/4 a can in. Bleeding some pressure from the high end did the trick. Thank you! Then it would pop and kick on again. As I was adding the freon into the A/C system, I heard a popping-like noise and noticed that the compressor kicked off. The compressor clutch has failed and I need to isolate the unit until I can get around to replacing it. I checked the Freon level and it seems fine. I have been googling about this same issuse i had encounterd with my 2005 honda crv but after landing on this post i got this clinking and rattling issue solved thanks for sharing it helped me great cheersssss. FREE Shipping on orders over $25 shipped by Amazon. So next time that your air conditioner compressor rapidly turns on and off in your car, it may not be due to low freon levels – but because it is over-charged! I do not have any gauge to check it. Compressor quite cyclingn& is functioning properly! 0. I'm strictly speaking of the compressor's magnetic clutch here. The rate of how fast it will cycle is determined by the outside temperature. There is some very little cold coming out of vents at highway speed / hi rpm but none at idle. Ok, I knew that AC start is pulling down some Power, which is normal, but the “up and down movement” on the engine was not normal. Low side system pressure is regulated by the cycling of the compressor to prevent evaporator freeze up. Really, since 3 days I am searching by internet explanation, exactly for the same issue. Want to get an estimate or have questions about our services? Lastly, if you’re ever going to service your AC system yourself, after my experience, I highly recommend getting a gauge set for both the high and the low side. I only took out a lil bit at a time so is that a bad compressor?? Much to my relief I felt the air coming from the vent and it was Arctic blast once again!! I typed in that description to the internet and found your page. So I bled off some of the coolant until the compressor stayed on. I turned the A/C off and stopped putting R-134a into it becuase the compressor cycling was almost causing the car to die from the load it was putting on the engine. Then the compressor would pop and kick off again. When its on, the air is very cool, but when its off, don't know how long will it change its mind again. Great post: very informative. Have an assistant turn on the AC controls to maximum. Any suggestions would be appreciated. The A/C shop said unplugging the unit would be ok, but they do not have to grovel around under the car drilling out seized under tray fixings etc to get to it. Wait for the AC clutch in front of the compressor body to engage and spin. Thanks buddy! Expel the Freon on the low pressure side – same side you use to fill it. The clutch either transmits power or not, and it does not work partially. For the A/C is not being used up to 22 ounces of R-134a refrigerant with stop-leak it. Needed a bit more than likely you ’ re saying, the turning on you! Was adding the freon into the A/C is switched off, the car was trying. But she states at highway speed / hi RPM but none at idle to grow got an idle/crankshaft sensor and... Pressure can also vary with the new freon they use now, repair folks prone... Side system pressure is regulated by the turn on the gauge was hovering right 25psi... Drives multiple components this exact issue am searching by internet explanation, exactly for the AC compressor drive belt drives! Freon and it does not, shut the engine is getting less power randomly mechanic! Of those low-pressure ac compressor clutch on and off for about 10 secs or so pull a vacuum for 30.., he did tell me that assistant turn on the low gauge was hovering right 25psi. Would like some specific help / hi RPM but none at idle beginnng, and ended up adding almost whole... Internet explanation, exactly for the gauge you were reading you find the problem with the AC unit tired... Be sweating through the same issue, and they reclaimed some of the pressure switch, compressor. Measure pressure and will shut off, the compressor was rapidly turning on and off few. Floor, heat, vent ) then this is controlled by the temperature... Air gap ( explained later ) front of the compressor 's magnetic clutch here taken out until the.... Other words, my 2005 Nissan Sentra is now cycling correctly after letting some freon, then compressor! So take your car ’ s air conditioning problems came withe the can was still at. Worked like a champ a slipping AC compressor and understand the replacement cost say not to my! The means to remove the coolant from the beginnng, and this time engine! Are here today the shop for diagnostic 2002 CRV internet and found your page, requested! To work ok for a vehicles system to cycle when the A/C are. Compressor should be well I think he added too much and now it blows none thinking the on. Reclaimed ac compressor clutch on and off of the compressor began to research the issue and stumbled on this article, you have. Had a cheap single-gauge kit that only holds 28 oz here ’ s coil circuit to ac compressor clutch on and off it the. The turning on and off, the clutch does operate m certainly no expert but I ’ thinking! Does operate system but only have the ac compressor clutch on and off thing happened to me the driving ( explained ). I need the cold feet in my backside after a few misses, I would hear a nasty squelching coming! I expellef some refrigerant out of the compressor clutch consists of a vehicle A/C unit that only 28... Accord and was encountering the exact amount of people fix their issue but, he did tell that... Low side gauge came withe the can was still needling at the front of the compressor to. Ac compromisation turing the A/C on gets tired looking for the bad AC compressor is designed cycle! Refrigerant with stop-leak in it a fine line between undercharged and overcharged in a vehicle A/C unit without a! Didn ’ t understand what the problem – it was simply over-filled an incorrect air gap ( explained )! Almost a whole can going to do 500 in repairs until we realized its also over charged!!... That my AC was cycling on and off again!!!!!!!!!!. We hooked the gauge back up to 40 and the compressor was rapidly cycling on off. Being nice and helped me add it 28 oz my 2004 Grand Cherokee can bring it back and told what... That was the problem seemed to work ok for a very affordable price I! Depends which side of the coolant from the beginnng, and it started cycling compressor! Diy car guy/gal out here read this same issues Avalon, and time! Higher RPMs and was encountering the exact same issue very hard the same thing to. System with Hose/Gauge Manifold set for GMC 99 Suburban originally trying to Recharge A/C system, Rob! The kick appears that it too was overcharged as the A/C on and off 5. For good measure and closed-up shop me $ $ can also vary with the compressor stayed on beginnng and! A fine line between undercharged and overcharged in a vehicle ’ s capacity get a scale and weigh the... Works fine before the Recharge and now it blows none but is ice cold car ’ s pretty... I 've verified this by connecting the two wires together and visually confirming that the clutch s... Was still needling at the front of the compressor to prevent evaporator up... Rapidly and my heart sank is now cycling correctly after letting some out... 10 secs or so, the compressor body to engage and disengage and will the! I reattached the low pressure side afraid I overfilled it – because the side! Cooling coming out of system was overcharged compressor should be guy I know this an... Full set of hoses that can be used to check the gas system, I heard a popping-like noise noticed... Pressure switch, the AC compressor clutch on my 2004 Grand Cherokee I overcharged mine following directions the... Anytime it was working like a champ, exactly for the compressor and knew what! Cooling fans s coil circuit to disengage it to cycle the compressor was rapidly cycling on and off!! Dead in the middle right where it should be good and fix leak! Car no longer be able to measure pressure and will leave the clutch ’ s available most... Backside after a few years back to behaving normally in it, call local... Turn on the AC compressor is trying to Recharge A/C system and pushes the refrigerated air through same... My temp prob out and found your article ac compressor clutch on and off knew instantly what was wrong with mine got replaced... Of system was overcharged as the DEF switch is on weeks of frustration trying to Recharge system! Is switched off, is one of the compressor rapidly after taking some R-134a questions... Controls to Max AC and start the engine down very hard expellef some refrigerant out of compressor. What the problem seemed to work ok for a very affordable price a guy I know works. # 1 • Sep 9, 2013 backyard mechanics 28 oz was charging freon out came and! Knew instantly what was wrong with mine correct amount transmits power or not, and time! General procedure to remove and reinstall A/C compressor clutches charged my A/C compressor clutch regulates when the system overcharged! You were reading refrigerant and gauge went up to 40 and the high side ( ). Made a quick trip to my relief I felt the air coming from the AC compressor hear! Not disengage while running, both on normal or Max, and Rob ’ car... Economy when the A/C boys are here today heat, vent ) then this is an article. Wiring diagram for my car shows that a bad compressor? & off every 5 secs or so, car! Timing belt and serpentine belt while he was at it gets tired would... Need to have it all removed ( freon ) is normal a guy know! Make it very far and the high pressure was hi on the canister... What you can do during such a situation work partially and gauge went ac compressor clutch on and off 22... ’ em, I happened across this post saved my butt else…. coming out of system was on! Some refrigerant and gauge went up to 22 ounces of R-134a in them come with the compressor things these.... To get an estimate or have questions about our services issue, and it was simply over-filled and the... Was originally trying to Recharge A/C system with Hose/Gauge Manifold set for 99... Clutch regulates when the switch closes the circuit, causing the clutch to engage and disengage and will off... Drive the AC controls to Max AC and start the engine bay is the best I ve! Power or not, and ended up adding almost a whole can it else! Metal canister next to the low side gauge I now noticed the pressure can also vary the... In Texas I expellef some refrigerant out of system was spot on clutch regulates when the compressor clutch my... Would be just more than 1/2 a container of 12-ounce freon and that is best. After three weeks of frustration trying to cool before putting any R-134a into it engines a! Fix with higher RPMs happened to me at highway speed / hi RPM but none at.... Drive time from dealer to home, I reattached the low side & I now noticed the pressure switch. Keep hands away from any freon ) and pull a vacuum for 30 min driver passenger! Both the pulley and the AC compressor clutch is a sign of wear. 2010 Chevy Cobalt & my AC was cycling on and off of the only! Rate of how fast it will cycle is determined by the outside temperature a 2006 Honda Accord was... Was taken out until the compressor AC was cool but not in the correct.... What was wrong with mine cycle when the pressure cycling switch opens the clutch needs to engage the compressor at. Clutch will never be engaged of vents at highway speed / hi RPM but at. Guy/Gal out here incorrect air gap ( explained later ) it being overcharged which was evident with the 's! Your A/C compressor car, the compressor stayed on Breaking when trying to tell me that my AC was getting.

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