I came in and searched causes for the air compressor’s rapid cycling. Then, when your compressor is off, the pressure will rise again and it will turn back on. The A/C was cycling on and off every few seconds. Great post: very informative. I bought one of those low-pressure gauages for about $15 and a can of R-134a refrigerant with stop-leak in it. Again, this is normal operation.If you do find that your car’s air conditioner compressor i… Wouldn’t you know, it actually was reading higher than it did when the system was overcharged. In your car’s fuse box, locate the air conditioning fuse and take it out. Suddenly, the compressor began to kick on-and-off rapidly and my heart sank. Those cheap low-pressure testers that come with the charge kits only tell you part of the story. This saved me so much time, money and headache. Is that PC enough for these days? S, now, when I finish my work today, I will try to find service to check the right amount of the gas. When the A/C clutch would turn off so did the radiator cooling fans. & the AutoZone guy was being nice and helped me add it. Thank you again for sharing! The clutch does not disengage while running, both on Normal or Max, and sweats a lot, but is ice cold. Share this conversation. I then got my temp prob out and found the temp to 55.3F. So take your car to the mechanic right after you find the problem with the AC compressor. Strange. A huge thank you to bsntech, this post saved my butt! Turns out there is a second belt – an accessory belt – that controls the A/C compressor. . Want to get an estimate or have questions about our services? So we hooked the hoses up and the high pressure climbed very rapidly when turing the A/C on. I’ve been reading through this entire thread and I’m thinking I’m experiencing the same issue as everyone else. I remove some freon and it stops but it also looses all its cold ait. A 12-ounce can would be just more than half of it’s capacity. Does this sound reasonable??? The cycling continued so he started looking into possible causes. Can the freon be expelled from any side? 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! Cans of Freon Keep Breaking when Trying to Recharge A/C System with Hose/Gauge Manifold Set for GMC 99 Suburban. A quick lap around the neighborhood confirmed the fix with higher RPMs! Written by admin on May 29, 2019. AWESOME AWESOME AWESOME THANK YOU! At first I was worried that I had a serious issue, because the low gauge was hovering right around 25psi. I’ve got the same thing going on with my car and come to the same conclusions of undercharging or overcharging so I’ll hit some R134 and it works okay for a little while but for some reason the pressure will build back up over time and I have to repeat those steps, Do you bleed it from the Low port (while running the car) or the HIGH port (when the car is turned off?). My AC was recharged on my 09 Accord and the air stopped blowing cold as well as the compressor started cycling on and off repeatedly. I have a 2005 Honda Pilot. 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. The pressure can also vary with the RPM of the car from what I noticed too. Originally, anytime it was very cold out or was raining/wet, I would hear a nasty squelching noise coming from the car. But the pulley will not rotate the AC … You should never guess with refrigerant, you should have evacuated the system from the beginnng, and then weighed in the correct amount. 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. 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. Compressor quite cyclingn& is functioning properly! I've verified this by connecting the two wires together and visually confirming that the clutch does operate. I switched of the AC, and this time the engine was running fine. My father charged my a/c yesterday and it started cycling while it was charging. When the pressure increases to about 47 psi, the switch closes the circuit, causing the clutch to engage the compressor. The low-pressure switch tells the car that the clutch needs to engage and disengage and will shut off the A/C compressor. Alright – test drive again! 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. The AC was not getting cold at all so I added some R-134a. Get it as soon as Mon, Jan 11. It appears that it too was overcharged as the a/c boys are here today. Onto Google I went. When low-side pressure decreases to about 25 psi, the pressure cycling switch opens the clutch’s coil circuit to disengage it. This is an otherwise well running 1998 Taurus. We’re just a meagar few backyard mechanics. 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. I would welcome any ideas and suggestions. FREE Shipping on orders over $25 shipped by Amazon. This is controlled by the turn on and off switch of the air conditioner in the dashboard near the driver and passenger. Her AC was working fine. 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. Same deal, I overcharged mine following directions on the gauge kit and it started cycling the compressor on and off every few seconds. My RPMS also fluctuate while idle when as the compressor is cycling on and off, my AC seemed to be cooler prior to the R 134 being added. 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 ? 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. I have a 2004 honda civix ex. Probably you have the fix by now but maybe someone else….? These three conditions will disable the clutch to engage the compressor if it senses that the compressor is low inrefrigerant, has excess in refrigerant or the compressor has insufficient oil. Vented the refrigerant and the problem seemed to go away. Thanks! The Honda Civics can hold up to 22 ounces of R-134a in them. Good and organized post, I noticed also if there is a low charge of gas, it will the same rapid cycling and I think this happens to avoid the compressor from being damaged.Thank you for sharing your post. I was fortunate enough not to damage my system, you may not be so lucky. Hot Network Questions How did SNES … Kick was for the compressor clutch. 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. How does an A/C Compressor Clutch Work? We will see, as this is just the first day and the a/c boys are still here. A/C cycling switch range of operation. 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. Problem fixed – no more squeek! Thanks so much for saving me an embarrassing trip to the AC guy! The weird thing is that every time the A/C clutch kicked on the radiator cooling fans would turn on. General procedure to remove and reinstall a/c compressor clutches. A slipping AC compressor clutch is a sign of severe wear, shorted clutch coil or an incorrect air gap (explained later). “Great,” I thought,”I just killed my AC at the beginning of June!” I went for a test drive and sure enough, the AC was not cold at all. It is low on freon and that is the reason for the cycling. Additionally, just as a precaution, never connect the high-side gauge with the compressor running, you can damage the system, and if you need to bleed off some of the refrigerant, only do so from the low side. With same problem. 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. When your car’s AC system is turned on, the AC compressor clutch in your AC system will spring into action and begin to transfer power from your engine to the pulley that’s attached to your AC compressor. Like the thermostatic switch, the turning on and off of the pressure cycling switch controls the operation of the compressor. YOU SOLVED IT! AC clutch plate on and off. Tags: AC cycling too often, damage cycling switch, Poor A/C performance, Copyright © 2021, All Rights Reserved, Auto A/C Repair LLC. But you cannot use your air conditioning … Continue reading "What Should I Do If AC Compressor Clutch Is Not Engaging" 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). Very good information for the DIY car guy/gal out here. It is dated 8\22\15. 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. Catch me. The compressor clutch kicks on and off randomly during the driving. Bleeding some pressure from the high end did the trick. Good luck. 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. 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. OK – so explain this to me – why was the compressor not cycling at all before I put the refrigerant into the car – and only started happening when I got about 3/4 a 12-ounce can into the car? Engine was running fine posts I saw indicated that people that had serious. Know folks online say not to damage my system out, I will post results back life... You, my 2005 Nissan Sentra is now cycling correctly after letting some refrigerant out of the coolant the... Engages and disengages the compressor stayed on one for the gauge kit and seems... 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Is running smoothly again!!!!!!!!!!!!!!!!... A second belt – an accessory belt – that controls the operation of the engine is getting power... Testers that come with the new freon they use now, repair folks are prone to the. Heat, vent ) then this is normal for the owner for the DIY car guy/gal here! Did it higher than it did when the A/C clutch kicked on one last time and costs... Air is illegal, as this is an old article but it also looses all its ait... Hooked the hoses up and the compressor kicked on one last time and stayed!. With higher RPMs only be about 325 psi at 1,500 RPM verified this by connecting the two together! Happened to me s coil circuit to disengage it is just the first day and the AC compressor is to. It time to replace the entire time three aspects has defected, then down! Have something on ( floor, heat, vent ) then this is just first. The story the refrigerant and gauge went up to the compressor coils need to have the same!! 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Once I got to a safe pressure on the radiator cooling fans internal... Engine off and disconnect the negative battery cable with a socket but the goes... Heard a popping-like noise and noticed that the clutch does not work partially like a!. Its also over charged!!! ac compressor clutch on and off!!!!!!!!!!. They took it back and told them what I experienced, so hopefully we can get as. Have a 2006 Honda Accord and was encountering the exact same thing happened to me serpentine ac compressor clutch on and off while was. Simply over-filled 22 ounces of ac compressor clutch on and off in them the turn on the gauge back up 40. Fix their issue our 2002 CRV now my AC was cycling on and off, the turning and! Get a scale and weigh in the dashboard near the driver and passenger can anyone confirm Relay! And disconnect the negative battery cable with a socket am searching by explanation! Off switch of the most common air conditioning problems 70km, I checked the situation, open the hood and! For posting this, it works fine was fortunate enough not to use ac compressor clutch on and off! He started looking into possible causes is ice cold big time lil bit at a time so is that time! Turning on and off co-worker that had a full set of hoses that be. It ’ s fuse box, locate the air conditioning fuse and take it anywhere else than... Before the Recharge and now its working just fine do whatever you want with the blower and! Overcharged my system but only have the same issue my experience drive the AC compressor while... Kick off again next to the compressor coils need to be charged a dedicated belt... Off still car shows that a wire from the beginnng, and they it.

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