Blown fuse (either the high amp fuse to the compressor or the low amp fuse from the dash) 2. Participant. Since I never use it I dont know for how long its been faulty. This fixed the problem at first, but last summer the AC started working intermittently, and then not at all. The car is a 1995 Buick Lesabre (not sure if it's a Custom or Limited). I took it back to the place. Jump to Latest Follow 1 - 4 of 4 Posts. AC compressor clutches receive power in a number of ways. Was this answer helpful? Thank you, I will hopefully get that checked in the next couple of days and will update you with what I find. If the AC compressor clutch engages when you tap it, try disassembling the compressor clutch and removing all fitted washers, which can extend its life by several thousand miles. Sunday morning, on way to work, no AC. Let’s assume the clutch is not engaging. It's also make the ac clutch won't engage. sdhd97 ... 10.26 Compression Forged Probe Pistons Probe 6" Forged Rods Probe Cast Crank Dart Pro 1 Heads (200cc intake runners 2.02 intake 1.60 exhaust 64cc combustion chamber) TPIS Big mouth manifold Super Ram Plennum and Runners Accel Cam Shaft (050" lift: 211/219 (int/exh) Valve … I checked the voltage at both and they both checked good. Bad clutch coil is also can make your compressor ac clutch not engaging. A/C Clutch not engaging. I was just about to sell the Opel GT but turns out AC isnt working. A/C compressors are difficult to work with because of the refrigerant stored inside. Of course, the Factory Service Manual (FSM) specification for your clutch coil is the one to compare against, but typically an A/C compressor clutch coil … I disconnected the plug and measured volts … clutch on the end of the compressor does not turn) it is one of 3 things. 2013 Kia Optima. I jumped the relay and then it works. This topic contains 2 replies, has 3 voices, and was last updated by Jack Curry 7 months, 3 weeks ago. If voltage is around 12 volts or more, then clutch should be engaged when plugged in. I checked the fuses they are good. If there is a voltage present then the clutch is burned up and needs replaced. Why AC clutch won’t engage. Topic June 6, 2019 at 3:10 am #893691. Easy A/C Clutch Coil Test A/C Clutch Not Engaging - YouTube I verified voltage to the clutch/compressor, and it is ok. Also if the high or low pressure switch is faulty that may cause a problem. Last Saturday, AC was working fine. The Ac clutch coil is bad 2. if the compressor does not engage (i.e. The compressor clutch won’t engage if pressure is low. Just different functions. The compressor relay is "clicking" and staying engaged, so I don't think its low or that wouldn't happen. The Ac Clutch Will Not Remain Engaged In Order To Continue Cooling The Truck. pickup for clutch up to male c … read more AC clutch not engaging. It looks like the compressor clutch is not engaging. If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, or a low pressure lockout. They can activate through a relay that’s energized directly by a proper condition of the low and high pressure … the fans are blowing hard, but when I go under the hood the AC compressor clutch is not engaging (outside of pulley spins, inside doesn't.). Elliott Fritz. So, I ruled out the ccrm. If I put voltage on the clutch wire, nothing happens, clutch does not engage. In these situations, it is necessary to have your vehicle checked immediately by a professional mechanic. Remove the connector and force it with 12v and ground. The compressor clutch is controlled by the climate control module (IHKA in BMWspeak). So I thought low refrigerant, so I tried jumping the low … Using low-quality oil could be a reason for failing AC compressor clutch but it could happen even if you use synthetic oil and high-quality coolant. A/C Magnetic Clutch is not engaging when A/C button pressed. It's summer again, and I'm … The air distribution would be a totally different issue. This will allow the compressor drive and the engine to rotate at the same time. 1. Okay, so I'm not getting ground from the PCM it seems. The switch shown in the diagram is bad (see attached pic) 3. In most cases, bad clutch coil is meaning that the coil inside is breaks up. Ask Question Asked 2 years, 4 months ago. Pour autoriser Verizon Media et nos partenaires à traiter vos données personnelles, sélectionnez 'J'accepte' ou 'Gérer les paramètres' pour obtenir plus d’informations et pour gérer vos choix. And your fan does not have a clutch but the ac compressor does .But with all the gages and equipment you have I am sure you have the sense to know what the base line pressure is needed to activate the low pressure switch. I checked the fuse and it is fine and there is power going to the fuse block when I turn the AC on. The clutch coil should simply be tested to determine if coil failure is the cause and it’s easy to do. So I thought low refrigerant, so I tried jumping the low pressure switch and still didn't engage. Even a blockage in the refrigeration circuit can make the clutch not to engage. 1. got 14v signal to compressor mag. I jumped the low pressure switch to see if clutch would engage. 12 Posts . There is power at the … When you jumped the relay, I assume you jumped from 86 to 87? I checked the fuses they are good. Last Updated on: October 24, 2020. The Magnetic Coil has been replaced and works when hard wired to 12v, the system has refrigerant (checked by garage) and functions when hard wired. If you want to diagnose an AC compressor clutch for defects, apply these techniques: Working Method 1 Nos partenaires et nous-mêmes stockerons et/ou utiliserons des informations concernant votre appareil, par l’intermédiaire de cookies et de technologies similaires, afin d’afficher des annonces et des contenus personnalisés, de mesurer les audiences et les contenus, d’obtenir des informations sur les audiences et à des fins de développement de produit. Now that I'm down here I've noticed that I'm not getting any cold air. The integrity of the clutch coil can be tested on the car using an ohmmeter. A/C clutch not engaging. Check the air conditioning compressor clutch wiring for a voltage with the a/c switch on high and fan on high. If the AC is turned on, the clutch becomes “energized” and “engages” the armature plate of the compressor belt and compressor drive. Improve this answer. The other two wires are ground coming from ECM to compressor. I did notice today that I could feel some air coming out by my feet. No. If clutch still not engaged, then … A common cause of the ac clutch not turning on is lack of refrigerant gas in the system. The pressures on ac gauges are 96 low side and 195 on high side. I swapped the A/C relay with the horn relay and nothing. At this time there was power at the magnetic clutch +ve wire but not now for some reason. When a compressor clutch does not disengage, it will cause the refrigerant to build up and freeze the line. Viewed 3k times 0. I brought it to a shop, where the compressor was replaced. Hello guys! It has manual climate control, an automatic transmission with a 3.8L V6. When the AC compressor clutch in your car suddenly stops working and does not engage, it could be a sign of serious problem as cool air flow would not be blown into the engine. I tried to put a can of R134a, but since clutch does not engage, it did not take. The Air Compressor Will Not Come On. 2. So that leaves 4 possible things that I can think of. The IHKA needs several inputs before it sends 12VDC to the electric compressor clutch: - an “ok to engage” signal from the DME Plug clutch wires back in (with motor still running and ac set to max). got it troubleshot down pretty thoroughly and i am fairly knowlegeable. The AC compressor clutch often has a plug with 2 pins. Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › AC Compressor Clutch Always Engaged. Active 2 years, 4 months ago. PCM was not sending voltage to low pressure switch. I followed the "clutch not engaging" flowchart in the Civic WSM which is basically: Check the dash and under hood fuses ; Check the relay ; Check for battery voltage on the relay plug ; Short B+ to the clutch wire to see if the clutch closes ; Check for continuity on the thermal protector and resistance of 3.05 to 3.35 Ohms on the field coil; Share. The compressor/AC system just cool the air and then where that air is directed inside the cab are different systems even though they are related by the air system. I do not have voltage at the red/white wire on connector next to A/C clutch. I measured the resistance of the compressor cable (1 wire) to chassis ground and it measures an open circuit. This happened the right after the radiator was replaced because of a leak, but even with the leak, the a/c was working perfectly, but once replaced it didnt work anymore. Découvrez comment nous utilisons vos informations dans notre Politique relative à la vie privée et notre Politique relative aux cookies. AC isn’t as strong as it should be. In a few cases, the clutch does not engage due to a clogged refrigerant circuit. The car's AC system wasn't blowing cold air. If I have a slight loss in vacuum or the actuator door isn't fully closing would this also stop the PCM from sending signal? … Test/check pressure switches...could be a faulty switch preventing the PCM from grounding … Saturn SC-1 A\C compressor not turning (shaft not engaging). Is There A Fuse Or Relay Or Something I Can Check? Still nothing. I attached the wiring diagram. Poor ground The last open circuit in compressor ac clutch that makes it won't … To disengage the clutch, a switch must be replaced. If you get power at both terminals at relay, then check for ground circuit back to PCM....if circuit is OK but PCM is not grounding the relay when AC is engaged, then the PCM may not be getting a signal to power the compressor/clutch....check AC switch on heater controls. The system pressure is keeping the switch open 4. AC clutch not engaging. If that is the case, can you put your meter across pin 86 to 85 with the engine on and A/C turned on? Discussion Starter • #1 • May 25, 2018. I have a 2007 Honda Fit. Clutch did not engage. I confirmed that 13v is getting to the compressor clutch, its just not engaging. TIM TEUNISSEN MEMBER; 1998 DODGE RAM; 5.9L; V8; 4WD; AUTOMATIC; 203,000 MILES ; Hi there, so my A/C is not working, the A/C clutch won't engage. I swapped the A/C relay with the horn relay and nothing. Even if you are using synthetic oil or coolant in your vehicle, the compressor clutch can get damaged due to some electrical problems too. Hence, the AC starts working. Vous pouvez modifier vos choix à tout moment dans vos paramètres de vie privée. What am I missing? Two summers ago, my AC stopped working. I checked fuses number 36 and 20, they are not defective. Whether the clutch operates or not will all depend on the AC itself. The air conditioning clutch could be not working for the refrigerant could be low or the clutch could be burned up. I … The AC stopped working in the winter and I didn't bother looking into it until now. I jumped the relay and then it works. Here are the most common causes of an AC compressor clutch not engaging: • AC system is low on refrigerant • AC system pressure is too high • AC clutch fuse is blown WHITEDIAMOND642 MEMBER; 1995 BUICK LESABRE ; 100,000 MILES; This is my first time posting here, so I'll be as complete as possible. Did you check the ac fuse and relay to see if they had power? Follow edited Sep … If your AC compressor clutch doesn’t engage, it means that your car will not be able to blow cool air into the vehicle. Sierra 1999 ac compressor clutch was not engaging, sensor behind ac compressor was not connected. I've never diagnosed AC before, so any help in where and how to look for refrigerant leaks would be great, as well as how to diagnose if I have a bad clutch, bad compressor … Creator. Hi there, so my A/C is not working, the A/C clutch won't engage. There is a pressure switch which detects that there is enough gas and if not the ac clutch won't engage. I Have A 2001 Dodge Ram 1500 Quad Cab 4x4 5.2l Engne With Auto Trans. Cannot find Magnetic Clutch Relay. Yahoo fait partie de Verizon Media. I was told the compressor … 1. When I got home I removed the 2-wire plug (on the AC), cleaned the connections and re-plugged the connector back on (actually unplugged and plugged a few times). Compressor clutch not engaging. My car(2011 Nissan maxima) is having an a/c issue. Noticed my AC wasn't blowing cold (this was the first time I had it on this season), so I pulled over and saw that the clutch is not engaging. And they took a look but they are a body shop and they have guy that … Informations sur votre appareil et sur votre connexion Internet, y compris votre adresse IP, Navigation et recherche lors de l’utilisation des sites Web et applications Verizon Media. Air Conditioner Worked Fine Two Weeks Ago. And even if it wasn't clicking (which I'd think would mean low levels) by bypassing the relay and using a jumper the compressor clutch should have engaged. If you push the AC button, the light goes on but the clutch does not engage. I Have A Question About My A/c On My 98 Ram 1500.I Recharged The Freon. When to the high pressure switch and tried jumping it still nothing. Blower works fine. 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Depend on the end of the compressor … now that I can think of now...