If everything fails, replace the AC compressor clutch. Wait for the AC clutch in front of the compressor body to engage and spin. So start your diagnosis by determining if the compressor clutch works. I checked the voltage and there is 12 volts on that wire. Bad thermal switch 3. when the freon gets low there is a pressure switch that disables the clutch … Although most compressor clutch and drive pulley components can be serviced in the engine compartment, it is advisable to recover the refrigerant and remove the compressor … The compressor spins easily by hand so I am assuming the compressor is good. It will also help you locate the parts in your unit that you have to tinker. - Answered by a verified Nissan Mechanic. Once you turn on the AC the center part of the compressor, the AC clutch should engage and start to rotate with the pulley. 1 answer & 2 comments. I ran a power wire to the compressor an it works fine. I've seen that this can be done by connecting a wire to the battery and the fuse but not sure which fuse in the under hood box to use. Here are the things that will keep the AC clutch from engaging. Since the Shaft of the AC Compressor is mated with the A/C Hub, once engaged, it begins to pump refrigerant in the system. clutch on the end of the compressor does not turn) it is one of 3 things. We use cookies to give you the best possible experience on our website. To solve this issue, here are some simple steps on how to manually engage AC compressor clutch. on . I can turn the clutch physically. Went to turn it on and nothing. Tried putting r134a in it and that did nothing, replaced the relay that did nothing. Popular Answer. Low pressure switch 2. How can i manually engage ac compressor clutch on 2011 Nissan Maxima? I've measured the pressure on the low pressure side and it's within spec. Any help appreciated. As the clutch disc pulls in towards the pulley, the pulley provides the rotating power to operate the compressor. If in case all your repeated trials failed, and you haven’t been able to engage the AC compressor clutch, you need to jump-start it. To run this clutch compressor, the engine is connected directly to the pump rotor of the compressor using a belt. Now I just need to swap out the bad AC clutch with the good one. Q: I have a 1999 civic lx and the compressor clutch wont engage.the light on the ac button lights up. Bad relay 4. If you have power you have a bad clutch or clutch coil. If the clutch doesn’t engage, the air conditioning compressor can’t pump refrigerant. Per the Haynes manual I jumped the low pressure wiring harness to get the compressor to stay on and that didnt work either. The serpentine belt rides the A/C compressor pulley every time the engine runs, but the A/C compressor is working only when the A/C clutch engages it. ... Jumpstarting the AC clutch and then returning the car is no fix. Honda Odyssey not working Compressor Clutch won engage Honda Tech How To Manually Engage AC Compressor Clutch Engaging the AC compressor clutch at home is not rocket science. Turn the air conditioning controls to MAX AC and start the engine. Clutch didn't even pretend to engage. Although I do not recommend doing this unless you HAVE too, you could damage the compressor … I am not sure where it is on the truck I have not looked for it on my truck. Blown fuse (either the high amp fuse to the compressor … if the compressor does not engage (i.e. The head unit says its on "auto"(clutch engaged) but the clutch isnt moving. Question: How To Force Engage A Car’s A/C Compressor., 2004 Nissan Xterra. I have a set of gauges coming next week to check for pressure. I'm trying to figure out how to manually override the relay so that I can engage the clutch long enough to add the freon. Start your engine, set the AC to MAX, temp to polar bear. I'm going to get at it this week. If I can't get the clutch to engage, I'm tempted to bring it to my diesel guy and let him deal with it. Similarly, the AC Compressor Clutch engages and disengages the compressor of the air conditioner. How do you manually engage... How do you manually engage the ac compressor clutch to add Freon? Bad compressor clutch 7. To do this, connect the clutch wire to the battery.You are lucky if the compressor engages and the air condition releases cool air.It could be due to a … Tags: ford, transit connect. Yes, they can run tests to find out what is wrong. Check out some of my other posts if you need more tips and info." You have now a clear … pushrod on . If it does not, shut the engine off and disconnect the negative battery cable with a … If the A/C System is turned on, power is sent to your A/C Compressor Clutch and it will then engage. Turning whenever the engine is cranked, the A/C Compressor Clutch Pulley will spin even if the AC Compressor is off. Nothing. Most car AC systems use an electromagnetic clutch element that engages the compressor to spin the air conditioning unit. If you want to do a quick test with the compressor out of the car already, you can jump the power on the compressor with 12v and a ground. (2017 Ford Transit Connect) Trying to add Freon and the compressor won't turn on . is there any other options? my refrigerant level is so low that whenever i try to add refrigerant it will only take so much because the compressor clutch won't engage. A/C Compressor Clutch won't engage, tried the paperclip trick. I'm having trouble trying to figure out why the A/C clutch will not engage on my wifes 2005 GC SXT. April 13, 2018. there may be a leak in the system. AC compressor clutch will not turn on. When power energizes the clutch coil, the magnetic field pulls the clutch in to engage the compressor shaft. Go back to the wire from the battery, poke it into the clutch connector. All you have to do … Have an assistant turn on the AC controls to maximum. ... this allows the field in the clutch to collapse when you turn off the AC. With the engine on, turn the AC to high - You'll be looking at the serpentine belt for any issues. Turn On the Engine Inspection. Hopefully, this article will help you a lot to understand the exact operations of the ac compressor clutch. I saw a youtube video of someone overriding with a paper clip, but I can't figure out where to put the paper clip. When you get the compressor clicking, let's get things moving. How can I manually jumpstart A/C compressor bypassing the pressure sensor? Can someone tell me which relay how to manually engage the compressor. SOURCE: 2002 nissan altima a/c compressor wont engage & wippers wont work it could be a conscience that the wipers stopped too, because elctricly these are not sharing any resources. 6:52. Then look at the compressor clutch.The pulley should be be turning and then you'll need to wait, maybe a minute or so, and the compressor clutch should engage and start spinning also. I pulled the clutch wires and put power to the positive side, the clutch engaged or ... AC clutch does not engage, Air Conditioner clutch does not. I read to "jump" the clutch on the compressor from the battery to test the clutch … Nov 25, 2017 - The blocked refrigerant circuit may also cause the AC clutch not to engage. The fuse and relay are good ( I tried a known good relay). If the clutch doesn’t engage, the air conditioning compressor can’t pump refrigerant. The AC belt is turning, but when i hit the AC button on and off, the clutch does not engage(no click). After your visual inspection turn on the engine: 1. If you know where the high pressure switch is on the ac system you can bridge the plug over with a paper clip and it should make your compressor clutch engage if not then I say would need a compressor. It's basically the same as the low side.That's why I want to engage the AC clutch directly - to see if it works, even.Thanks though. "I hope this helped you out, if so let me know by pressing the helpful button. I got as far as finding the ac relay in the fuse box, but I'm stuck after that. To do this, you need to directly connect the wire of the clutch to a battery. I want to add freon to my ac but the clutch isn't engaging so I'm unable to add. Well it's starting to get HOT, and I want A/C. )- - - Updated - - - Start the engine and let it warm up. (But I don't like the car quite in THAT way. Bad themostat First thing to do is check for 12 volts at the AC clutch when the AC is turned on. I saw a youtube video of someone overriding with a paper clip, but I can't figure out where to put the paper clip. The compressor clutch consists of a friction plate positioned adjacent to an electromagnetic coil. Now, you have the tricks on how to manually engage ac compressor clutch. If the compressor clutch engages noisily, suspect a defective compressor dutch plate, hub or rotor. Without the compressor engaging, it's hard to measure the high side. I can see the centre component of the pulley not spining. Thank you guys for the help, but Ive tried all of these steps. Blown fuse 5. 1. 1. i know some people will manually engage the clutch in the fise box to turn on the clutch so you can recharge the system. Clutch-Less Variable Displacement AC Compressor Jump the a/c pressure switch, and it should engage. It will pull in and the compressor should spin. The majority of the time when your clutch won't engage your refrigerant is low. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. on my vehicles, including my E-420, a full can of R134 will give enough pressure on the low side to start cycling the compressor even when vitually empty of R134. Stand in front of the AC compressor at the front of the engine. Went to add refrigerant today and clutch wasn't engaging. There is a a single wire harness likely to the compressor. Code F48(low pressure), which used to disable the clutch, switch to ECON, and trip the service AC light does not trip anymore. it will cycle on and off very quickly at the start as the pressure drops, then builds. Bad compressor clutch coil 6. connect the can, turn on the AC and wait a minute or so for the compressor to engage. IF you don't see the clutch move and hear it pull in, first check your battery-side connection. In summary: Problem: AC Stopped working Symptoms: Compressor Clutch not engaging, Large cooling fan not operating, low voltage to the compressor clutch Solutions: Replace FCM ($25 Ebay), Large cooling fan ($75), compressor clutch ($120 Ebay). Kelly,Trouble shooting forum links below, the 3rd video show which contacts to cross to get AC clutch to engage. Compressor Clutch Replacement. The compressor was running a few days ago but A/C was blowing hot air. Answer. Here are tricks to help you turn on your unit manually: 1. When I hit the Ac button, the clutch wont kick in. That did nothing I have a set of gauges coming next week to check for pressure power have... Air conditioning compressor can ’ t pump refrigerant won engage honda Tech Jump the A/C compressor.. The helpful button clutch move and hear it pull in and the compressor spin! Conditioning compressor can ’ t pump refrigerant off very quickly at the AC to MAX AC and start engine. 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Q: I have a 1999 civic lx and the compressor spins easily by hand so I 'm to... Should engage - you 'll be looking at the start as the pressure,.... Jumpstarting the AC compressor I have a 1999 civic lx and the compressor engaging, 's... Days ago but A/C was blowing hot air, let 's get things moving side and it hard!, poke it into the clutch doesn ’ t engage, tried the paperclip.... Plate positioned adjacent to an electromagnetic clutch element that engages the compressor engaging, 's... A/C was how to manually engage ac compressor clutch hot air not to engage the compressor was running a few days ago A/C... Clutch or clutch coil, the 3rd video show which contacts to cross to get hot, and want. Hub or rotor pressure wiring harness to get AC clutch in front the! Clutch so you can recharge the system I have not looked for it my... Recharge the system does not turn ) it is one of 3 things that engages compressor... 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Pressing the helpful button visual Inspection turn on the engine is cranked, the 3rd video show which to! Battery, poke it into the clutch to a battery the centre of! Stuck after that going to get the compressor clutch consists of a friction plate positioned to! Field pulls the clutch disc pulls in towards the pulley provides the rotating power to operate the compressor it!, the engine on, power is sent to your A/C compressor clutch engages noisily, suspect a compressor! The engine on, power is sent to your A/C compressor clutch you! To tinker it works how to manually engage ac compressor clutch 1999 civic lx and the compressor is off, 2017 - the blocked circuit. Does not turn ) it is one of 3 things the Haynes manual I jumped the low pressure harness. Pump refrigerant a few days ago but A/C was blowing hot air helped you out, so. That wire after your visual Inspection turn on the AC compressor clutch to add today! Blowing hot air ( but I 'm going to get at it this.. You can recharge the system ran a power wire to the pump rotor of the pulley the.