How To Jump Ac Compressor Clutch

i tried using a jumper wire to the switch on accumalator. A/C Compressor Choose for Me to Minimize Cost Choose for Me to Minimize Cost Related Parts A/C Compressor Connector A/C Compressor Relay A/C Compressor Service Valve / Adapter A/C Compressor Switch Puller A/C Orifice Tube A/C System O-Rings, Seals, & Gasket Kits Alignment Tool Belt Installation Tool Belt Measurement Tool Belt Tension Gauge Heat. So yesterday i got checking it out. Is replacing the Compressor Clutch something a layman can do? or does it require the evacuation of the whole system? I've got the part number (88410-08030) - one guy said "$200, couple hours work" but my wrench says we have to remove the compressor?. Make a small 6-inch jumper wire and strip both ends. So i ran a jumper wire from the compressor straight to the battery. system has one can of freon. Driven plate, this part drives the compressor when the clutch is engaged, there are springs that hold the plate away from the pulley. 3 ohms (the path consists cable from relay + two connectors+ thermal protector attached to the body of the compressor , the actual measurement), the clutch is drawing 2. 4 a/c clutch not engaging change$ removing the compressor and doing the clutch/coil yourself ****(Don't replace just the field coil)**** Have. How do you jump ac compressor clutch? Answer. I'm pretty sure the bearing in my AC compressor clutch needed changing. It would be lucky if the AC could blow cool air and the compressor could engage. Went to jumper pressure switch to start charge but found 4 contacts rather than two. Power for the compressor clutch comes from the relay in the fuse panel. I have the one with shims. but I do not get any voltage when the relay is in place so the relay is not being energized it seems. Adjusted the Freon charge, all with what ended up being very temporary results. I turn the switch on and the compressor will not come on. The reading indicates if I unplug the AC Clutch put in a new fuse and it pops then it is the wiring if not it is the coil. So yesterday i got checking it out. for the relay 85 and 86 are the coil (switch) and 87 and 30 are the in and out, to test the compressor clutch you can remove the relay and jump 87 to 30 with a small piece of wire. My daughter took the car to a small garage, and they told her she needs a new compressor, but didn't give any specifics. The system is charge correctly but the compressor wont engage. My compressor is not turning on. The fuse and relay are good ( I tried a known good relay). The A/C compressor clutch may wear out and break before the compressor itself does. fan blower work and a/c interior switch works. The other is ground. AC compressor might stay engaged when it shouldn't, or system would refuse to move dampers - heat when you want AC, AC when you want heat, etc. the green one on top of the air cleaner and the one on the accumalator. You should see zero Volts with the AC off, 12-14 Volts with the AC on. first off you need to check power to the compressor the power wire to the comp is the wire going into the clutch. When I unplug ac pressure switch the fan runs until I plug it back in. However the ac clutch will not engage to allow a recharge. The accumulator or dryer looks like a long cylinder, it has a pressure switch on it and two wires attached to it. A defective relay, compressor clutch coil or damaged compressor are all possibilities. I know nothing about it. How to Manually Engage an A/C Compressor by Tom Price If the air-conditioning compressor on a late model car does not engage, the system is probably low on refrigerant and the low-pressure switch prevents the compressor from turning on. Does this sound correct? Also I cannot seem to find a way to just get a new coil or new clutch so even if the coil does it mean a new compressor?. With a bad water pump bearing or fan clutch when to ac compressor kicks on will put more resistance in the belt system which will change a noise on a bad water pump bearing or fan clutch. Discussion in ' 6. The other way to tell if your comp. You may have to register before you can post: click the register link above to proceed. Take that metal guard plate off below the AC compressor 5. Popped the hood and saw that the AC compressor clutch was occasionally seizing up while the belt was still going around it, causing the noise. Code F48(low pressure), which used to disable the clutch, switch to ECON, and trip the service AC light does not trip anymore. ( BTW those cheap gauges arent very accurate). You have to pull the relay to do this. If the compressor clutch engages and there is noise then most likely its internal. The pressure switches are on a ground circuit. But it's still making noise whenever the engine is running. It worked great. Possible causes of AC compressor not engaging The AC compressor is not engaging on my 85TD. 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. April 13, 2018. Then look at the front of the compressor clutch. Jump that connection to battery and clutch will activate. A slipping AC compressor clutch is a sign of severe wear, shorted clutch coil or an incorrect air gap (explained later). If your actions do not deliver results, you may bring your car to a mechanic and let him do a thorough check-up of your AC system. Your clutch should operate. As stated,clutch worked fine with old compressor. either can cut out the compressor. FWD/AWD 1998 and Prior Shimming Your Ac Clutch Plate W/ Pictures no moving the whole AC compressor around to where you could work on it or. the compressor should not engage if the ambient air temp is below 45-50 degrees. When I push the AC button only the blower turns on, no AC. My mechanic diagnosed it as the gap had worn to far on my a/c compressor clutch. If the clutch on the AC compressor wont engage what do I look for - Answered by a verified Kia Mechanic We use cookies to give you the best possible experience on our website. Screw the blue hose to the low-side service port and the red hose to the high-side port. Intstalled MCC board and tried to jump start the compressor via jumping the two wire at the dryer switch. Refer to the symptom troubleshooting index. If your clutch does not engage, something else is wrong, and a code pull can reveal it. When your air conditioning is activated in your automobile, the compressor clutch transfers power from the engine’s crankshaft to the pulley mounted on the A. ok there is no power getting to the compressor. Of lesser concern but somewhat interesting: The system also automatically de-clutches when you give the car full throttle, which gives you a bit more power for emergency acceleration. Recently I had to get my engine coolant system and the thermostat system replaced due to a faulty system and while I was driving the car, it would constantly say AC off due to high engine temperate. but it does work with temperature. Does this sound correct? Also I cannot seem to find a way to just get a new coil or new clutch so even if the coil does it mean a new compressor?. fan blower work and a/c interior switch works. Low side static pressure is high 60 to 100 psi. I put a new one in and it still did not engage the compressor. I drove to work and popped the hood in the parking lot. Piston Air Compressor - High Quality car service equipment. Went to jumper pressure switch to start charge but found 4 contacts rather than two. I read in a couple of threads that you guys are jumping the clutch. I turn the ac button on and off while the vehicle is running and it still won't engage. overcharge of refrigerant will make your ac inoperative. Got it installed, and had perfect AC for all of 2 hours. If the clutch is not engaging you need to evaluate the electrical integrity of the AC system by removing the plug at the compressor and testing the voltage between the leads with the engine running. DTC P1546 Air Conditioning (A/C) Clutch Feedback Circuit Low Voltage. The connection sends 0-5 volts of pressure to the PCM fuse. So start your diagnosis by determining if the compressor clutch works. Unplug the low pressure switch and use a jumper wire and touch both connectors in the plug while the engine is running and A/C is on. Went to install it, real simple one bolt. I then jumped the AC relay to and noticed the clutch would cycle erratically despite being commanded on. Air Conditioning Compressor Fiat BRAVO Fast and Free shipping available Car parts for all car makes and models The Biggest Brands At The Best Prices More than 500. Checked low pressure switch added R134a By the way I see that my AC compressor has two plugs on on top and one on bottom. The process is a bit different for older cars Method 3: Replacing The Clutch. I determine I need to new AC compressor coil, reading open circuit on my wife's 2005 Ody. Possible causes of AC compressor not engaging The AC compressor is not engaging on my 85TD. most likely the ac compressor will not engage because it needs a freon charge. There's a single wire going into the back of the clutch, with a plug in it in the harness. This will bypass the low pressure sensor and allow the AC clutch to engage and begin to cycle again. In many of these articles we focused on some of the worst AC problems an old car can have. He quoted me $660 for a new compressor, plus $99 for the A/C evac & recharge, and enough labor and taxes to take the total to $1060. Bypass the Relay To bypass the relay, plug the A/C back in. But I believe it's coming from the AC compressor. If this causes the compressor to switch on and vent out cool air, the problem lies with the pressure switch or AC compressor clutch relay. Seized air conditioner or heat pump compressor motor diagnosis: This air conditioning repair article discusses the Diagnosing Tight or Seized Air Conditioning Compressors and how to re-start a tight air conditioning compressor. We have been working since 2001! Equipment for Garages. I am having trouble adjusting/removing with the compressor still on the truck-there is not much room. Disconnect the plus wire from AC cluch > Start engine with AC turned on ( This is only so if cluch is working you can conferm the AC is working ) >> run a wire from plus on battery and touch it to the plus on AC cluch > If it ingages your promlem is somewhere else > If it don't you know you need a cluch >> Hate guessing games lol. 3A On/Off/On 3-Position 8-Pin DPDT Mini SMD SMT Slide Switch 10mm x 3mm MSK-13C01. But, watch for the belt slipping on the pulley as the cause of the compressor not turning. Do NOT jump the low pressure switch to operate the compressor non-stop so you can add refrigerant. It is possible that either clutch is open (failed coil), failed thermal fuse on compressor, or excessive clutch gap preventing clutch from closing. My '98 PA was very low on freon and I set the AC to come on, charged the system, and the compressor started in short order. However, I put a new relay in and the clutch wont engage. The diode is only to hold down electrical spikes. What is the most common reason for an air conditioning compressor not Method 2: Jump-start The Clutch. The first thing to check if your compressor will not engage is the electrical system. ) and when the clutch engages it overloads the engine. Pressure seems good, the compressor clutch engages when jumpered to 12V. Just had the same problem with my 2005 S40. If the pressure switch detects pressure and has power and has not failed, the clutch will engage. To check clutch coil, remove the clutch coil connector and confirm that the voltage to the coil is 12V when the A/C is turned on. B) If it does not work, then you need the jumper wire. Can I jump pressure sw to get clutch to turn on? Can't put R134 in unless pump runs, and it is not. I have replaced 3 ac clutch bearings this year 1 toyota 1 honda and 1 gm and although I needed special tools on for the gm unit Auto zone has them in there loan a toll program. Insert the two pins of the spanner wrench (Special Tool 6462 in Kit 6460) into the holes of the clutch plate. The middle wire that leads into the thermal fuse should have power in order for the compressor to run, but it does not. You have to check youre clutch cycling switch. Re: JD 4030 air conditioning compressor not engaging Bad cab connector under the right front corner of the cab when sitting in the seat. The AC clutch is not engaging. jump tested the clutch: jumped pin sockets 1&2 using a wire and did not engage the compressor. If you want to check if the clutch actually works, just jump the pressure switch on the line. Mike decided to jump the clutch with wire straight from battery to test clutch/compressor, and clutch immediatly engaged. You can jump any of the three wires to keep the compressor in good condition. clutch worked fine before installing new compressor. The A/C compressor clutch will not engage because of low R134a pressure. Replaced A/C compressor, vacuumed & re gassed, A/C works fine for about 30 min, then blew another fuse. E power steering, water pump and so on!. Clutch on compressor is not turning. Seized air conditioner or heat pump compressor motor diagnosis: This air conditioning repair article discusses the Diagnosing Tight or Seized Air Conditioning Compressors and how to re-start a tight air conditioning compressor. Apply the power and listen for the clutch to engage. Spring Compressor - Second Clutch Return Belleville Spring Retai Use this special tool to compress the second clutch return belleville spring retaining ring in 45RFE and 545RFE Automatic Transmissions. No a/c clutch means no belt to run the rest of the vehicles components, I. Everything was OK as well. freon is good. I do have broken blend door cable. I am getting power to it, the pulley spins but the clutch won't engage. I have tried replacing the the ac relays and nothing! So to sum things up, I can not activate my ac compressor clutch without wiring it straight to the battery. After a couple of days, I noticed my AC was back to blowing warm and when I checked my compressor clutch I noticed it wasn't engaging anymore. Re: 96 sierra a/c clutch won't engage. com, "Oak Park police: Man steals cash, batters employees from Austin Boulevard business," 13 Sep. Remember this low pressure switch is there for a reason. A/C Compressor Choose for Me to Minimize Cost Choose for Me to Minimize Cost Related Parts A/C Compressor Connector A/C Compressor Relay A/C Compressor Service Valve / Adapter A/C Compressor Switch Puller A/C Orifice Tube A/C System O-Rings, Seals, & Gasket Kits Alignment Tool Belt Installation Tool Belt Measurement Tool Belt Tension Gauge Heat. I've checked fuses, relays, banged on the clutch. The refrigerant gas, which was transformed. I'm pretty sure the bearing in my AC compressor clutch needed changing. Anyone know where the relay is, or what else I should check?. I know my compressor is bad so I'm just jumping my low pressure switch for the AC to engage. Pull the AC Relay, open the relay cap, insert the relay back, push the connector with a small nonconductor wedge, you can hear the AC Clutch engage. On another note, I took the van to a local AC repair shop who told me that I needed a new compressor? I hadn't told about all the troubleshooting I had done. Using a fused 12-volt jumper, apply power to pin T14/10 (green/black). Got it installed, and had perfect AC for all of 2 hours. How to jump compressor to start clutch when low on gas 1997 voyager 3. does it jump or fall? when you turn the ac on theac compressor engages. I checked continuity from the AC compressor wire that leads to the ac relay and its got continuity so im still trying to solve why the compressor wire is not getting voltage. Driven plate, this part drives the compressor when the clutch is engaged, there are springs that hold the plate away from the pulley. Turn your AC on, with clutch coil getting voltage. I was planning to get around to R&R'ing the. The compressor will run only if the electromagnetic clutch is engaged. Posted this on another site as well, always stuff that comes up at the last minute, (but that's my fault, I did know about this). once you`ve evacuated the 22a freon,add the 134a using the adaptor provided with the kit. The resistance of the path from a/c relay to the clutch is 1. The coil is engaged to pull the plate in contact with the pulley and turn the compressor. You now know what to do when AC compressor clutch is not engaging. How to Bypass A/C compressor for Car/Truck. jump tested the clutch: jumped pin sockets 1&2 using a wire and did not engage the compressor. After a late night searching archives Im still not clear on how to jump the compressor. ROGUE 14-15 (AC), VIN J (1st digit, Japan built), manual temperature control WARRANTY / GUARANTEE Most parts we sell through eBay Motors come with a 90 day money back guarantee unless otherwise stated. What is the best way to do this? My idea is to run a wire from the +(positive) post on my intake manifold, and another wire from ground. Re: A/C Compressor Clutch Air Gap Same deal with the electric clutches used on lawn and garden equipment. Jump the compressor relay next to the fuse panel under the hood. Try disconnecting the wire that plugs into the rear of your compressor. the compressor is run by the belt, a clutch engages to work the compressor. Skip navigation How to Add Freon to a Car and Manually Engage AC Compressor Clutch Checking The Wiring On The Air Conditioning Compressor. Idk what's wrong with my ac the clutch wont engage their pressure in the lines I had to manually get it to turn on meaning I used some gasket maker the felt and cut out rings the size of the compressor clutch and stick in their to get to spin over to charge but after I charged it the clutch still won't engage and theirs probably a thread here on it somewhere I scrolled for an hour and a half. The fuse and relay are good ( I tried a known good relay). (compressor is starting to seize?? ). If this causes the compressor to switch on and vent out cool air, the problem lies with the pressure switch or AC compressor clutch relay. Confirm how to "jump" the AC compressor? If this is your first visit, be sure to check out the FAQ by clicking the link above. We have a lot of car air conditioning articles posted on the site that aim at getting your mobile cooling unit working again. Here is where it slams into a wall, Compressor clutch will not pull in when air condition is selected at climate control panel. Me, like others on the board am having problems with their AC. So did some quick checking and noticed a faint bunt clutch smell. Here is what I have checked so far. ac clutch not engaging? ac compressor not engaging? How to test your A/C clutch and coil using only a paper clip or piece of wire. Seeing as how it's reading MUCH higher than that, I don't think the compressor is engaging. The A/C compressor clutch will not engage because of low R134a pressure. Unplug the low side pressure sensor and run a jumper wire between the two terminals. With this replacement part I was able to repair a failed bearing situation without removing the compressor / breaking open the refrigerant system on my 2002 Jeep Liberty Sport (3. Low side static pressure is high 60 to 100 psi. The instrument cluster will ground this reference to request a compressor shutdown for an overheat condition. Does that mean the stator is good?(when I do this, the air coming out of the vent does cool down, but i'm not sure if it is as cool as it. Do I have a bad AC Compressor? Clutch will not engage unless I jump it (except for a second when engine start- AC on). With the wiring plug still plugged in, touch the jumper wire to the hot side relay lug, from the controls as already identified and from the relay lug that feeds the A/C compressor. I'm having trouble trying to figure out why the A/C clutch will not engage on my wifes 2005 GC SXT. 2011 Xterra Pro 4 X My AC went out yesterday. The AC isn't blowing cold. You can jump a 12 volt wire to the AC clutch wire (the one with the plastic connector) temporarily to just test the clutch engagement. But, watch for the belt slipping on the pulley as the cause of the compressor not turning. To do this, you need to directly connect the wire of the clutch to a battery. At this point, you either must replace the entire clutch set (magnetic plate, ac clutch pulley, and ac clutch coil) or the complete ac compressor with ac clutch set. is working is to turn on the heat and put the setting on defrost (on your windshield) in that stage the compressor should cycle, freon or no freon. WRONG! Put the clutch in place and inserted the bolt, turned and turned, won't tighten. The oil for the compressor is carried by the refrigerant vapor, if you do not have enough refrigerant in the system, you will not have enough oil flowing to the compressor. just make sure u dont mix up positive and negative Show Full Signature 350 SBC, 3" body lift, custom bumper, full width dana 44 and 12 bolt chevy,high steer, 36x14. com FREE DELIVERY possible on eligible purchases. I replaced the ac compressor because the bearing on the compressor pully was shot and the compressor leaked anyways I figured it was appropriate to replace the whole compressor. If your clutch does not engage, something else is wrong, and a code pull can reveal it. From what I thinking the ecm is to blame. Anyone know where the relay is, or what else I should check?. Since you've checked AC relay and fuse, check to confirm 12V is arriving at compressor clutch connector. So went to advanced auto and picked up Arctic Freeze recharging can that has the gauge and everything with it. He quoted me $660 for a new compressor, plus $99 for the A/C evac & recharge, and enough labor and taxes to take the total to $1060. Air Conditioning Compressor Fiat MAREA Fast and Free shipping available Car parts for all car makes and models The Biggest Brands At The Best Prices More than 500. It's on one of the lines connected to the receiver/drier. 7L 2002 2003 55055517 55055517AB(CDEI) 55055909AA(BCD) ᗐAN17850A ᗑ10pcs or 20pcs or 50pcs DC 50V 0. Compressor is 1 month out of 1 year warranty. Clutch on compressor is not turning. Idk what's wrong with my ac the clutch wont engage their pressure in the lines I had to manually get it to turn on meaning I used some gasket maker the felt and cut out rings the size of the compressor clutch and stick in their to get to spin over to charge but after I charged it the clutch still won't engage and theirs probably a thread here on it somewhere I scrolled for an hour and a half. Check the operation of the clutch and AC system quickly by running a temporary jumper wire from the battery to the clucth. With the engine running, check for the ground from the ECM with the AC switch on and batt + on the other two terminals. When I push the AC button only the blower turns on, no AC. ac compressor relay not grounding to cut it on need some advice. Tried to jump start the compressor by disconnecting switch at dryer and jumping the two wires with AC turn on. Usually when it's REALLY, REALLY HOT. Me, like others on the board am having problems with their AC. For those that want to do the job themselves, local parts stores such as Advance Auto Parts offer recharging solutions. Land Rover Range Rover AC Clutch Refuses to Engage Some Land Rover Range Rover owners complain that the AC clutch does not engage. It blows cold air for about 10 -15 minutes than gets hot. i have a 98 s10 2wd 4. Place the ratchet in the opening in the accessory belt tensioner and pull the tensioner away from the belt. The compressor clutch should engage. Yes -- echo that -- start the recharge and the compressor will come on when the freon/lubricant level is high enough to not cause compressor damage. clutch worked fine before installing new compressor. The AC compressor clutch is the first thing that moves every time you turn on your AC. How hard should it be to rotate the AC compressor by hand? The AC button lights up and you can definitely feel the engine working harder when the clutch is engaged, but the front of the AC compressor isn't turning. Compressor not coming on. According to the instructions, it should be between 35-45psi so I got another can. AC stoped blowign cold. Jump the compressor relay next to the fuse panel under the hood. You may also smell something burning underneath the hood of your car. I was told by someone that I need to jump the AC compressor and that may kick it on. You may have to register before you can post: click the register link above to proceed. A faulty automotive air conditioner can be one of the more difficult issues to diagnose and repair. However, I am bit puzzled as to what would cause this type of failure?. Compressor definition is - one that compresses: such as. 3L IDI Diesels ' started by 6 Nebraska IDIs , Jun 27, 2016. Check AC compressor relay-make sure the compressor clutch is turning the compressor with engine at idle. ac clutch not engaging? ac compressor not engaging? How to test your A/C clutch and coil using only a paper clip or piece of wire. I don't think the low pressure switch cuts off the condensor fans since they run weather the compressors clutches up or not. A/C clutch quick fix many volvo owners find that the a/c compressor on their car develops a condition where the compressor clutch does not engage after prolonged use or just not at all. The "plate" that sits on the outside of the pulley is making the noise. How To Manually Engage AC Compressor Clutch Method 1: Add More Coolant. This can be replaced on the vehicle by loosening the A/C compressor so it can be twisted and worked on. 8 liter - 120,000 miles) the ac compressor clutch burned and I replace the compressor with a new switch. Manufacturers do their best to mask both of these symptoms of a properly operating air-conditioning system. It does engage if I jump it off a 12V source. Check the pulley bearing for roughness or excessive leakage of grease. A large choice of products. My problem is I can't get the compressor to start to get the freon into the system. AC Compressor Clutch Length: 0:22 Added: Feb-28 Views: 142. Manually switching the a/c on and off would sometimes get it to work, but not for long. When I push the AC button only the blower turns on, no AC. clutch clearance & coil test:. 3 lbs had on evac machine at shop he could not add anymore afraid of high pressure max. AC Compressor clutch knock/rattle. I've ignored it for a couple of years since I haven't needed AC, but I'm heading across the midwest next week so I'm considering fixing it. You now know what to do when AC compressor clutch is not engaging. How do you jump start the car ac compressor when the system says "refrigerate very Low! A/C Compressor Off"? - Answered by a verified Cadillac Mechanic. The compressor works but the clutch wont engage unless hard wired to battery or i squeeze the magnet in the relay. The compressor clutch should engage. With AC on max, I popped the hood and checked to see if the clutch on the compressor was engaged. Jump to Latest the compressor and see if it's possible to replace the clutch and bearing or if the compressor needs to be. You have to bypass 3 wire ac pressure switch from B1 to B4 to power up the compressor clutch. The clutch is designed to be turned on and off as needed. Q car year: 2003 car model: Mini Cooper I have replaced the a/c condenser due to freon leak and evacuate / recharge R-134 12 oz. is there a way to test the switch control in the dash? i read that one of the light blue wires is for the ac controls and traced it back to. Jump the pin from the compressor clutch to a batt + at the relay and if the clutch clicks, its good. There's a single wire going into the back of the clutch, with a plug in it in the harness. These clutches used to have adjustments to bring the brake pads in so that we (techs) could adjust the gap after the friction material on the drive face wears. It was not. It's on one of the lines connected to the receiver/drier. If you jump the low pressure switch with the engine running, do it only for a few seconds. 3) Inspect the compressor's clutch. I have a '97 850. The AC belt is turning, but when i hit the AC button on and off, the clutch does not engage(no click). So I guess I can safely say that the AC coil is done. Bad AC Compressor sensor - fixed Hi all, I have been looking through the old post about AC problems and I am not finding this exact one. A bad car AC relay remains a common problem for many years, make and model automobiles. I am getting power to the low pressure switch and the. It has the correct freon charge. Please help, Thanks. After that, it could be many things including your final stage unit,but freon charge would have to be next. Can someone please confirm that this is an indicator of a bad AC clutch?. Failure of the air conditioning compressor is common because moisture or clogs in the system will place stress on the compressor. tested voltage to clutch compressor and it goes on and off as well as if something is telling the compressor not to come on. Running the AC helped reduce the seizing, but did not stop it. -(skip this step if new compressor comes with oil) drain the oil out of the new AC compressor, and pour 2. Replacing ac compressor clutch BEARING If this is your first visit, be sure to check out the FAQ by clicking the link above. As stated,clutch worked fine with old compressor. The quality, durability, and reliability of all products are backed by over 50 years of excellence in mobile air conditioning experience and know how. With the wiring plug still plugged in, touch the jumper wire to the hot side relay lug, from the controls as already identified and from the relay lug that feeds the A/C compressor. AC Clutch is not turning on. Recent Examples on the Web. The compressor is now on. Yes - see point 5. It is if you want your AC to work. The PCM will activate the A/C clutch relay when the PCM detects that A/C has been requested. The compressor clutch should engage. I can turn the clutch physically. Thought that the refrigerant was low and that is why the clutch won't come on. Popping the hood with maximum air-conditioning selected often reveals the problem of the car AC clutch not engaging. How to Bypass AC Compressor Clutch. I am getting power to the low pressure switch and the. jump tested the clutch: jumped pin sockets 1&2 using a wire and did not engage the compressor. It worked for me and hope it can help someone else. my ac compressor is still not engagin. Warning i am not a professional. It is an ominous sign when the clutch. With the motor running, I can see that the AC comp. Measuring the clearance between the compressor clutch friction surfaces. The air conditioner quit working towards the end of last summer. (70 degrees oustide about 70 psi on high and low sides - temp. I turn the ac button on and off while the vehicle is running and it still won't engage. AC was working fine and then one day all the sudden it started blowing hot air randomly. clutch clearance & coil test:. 000 car parts available. The coil is engaged to pull the plate in contact with the pulley and turn the compressor. Got it back and noise got worse over 3 days. I bled the system until it went to green and my compressor still isn't engaging. The resistance of the path from a/c relay to the clutch is 1. AC compressor will not run. oh that's what a compressor clutch is? Thanks, I would've never known. No ground is needed as the compressor clutch and diode each ground out on the compressor housing itself. Have you fixed the leak? "pressure switch on the accumulator has some seepage" Freon leaves no trace, the AC oil does leave a residue. Second, if you are going to jump the compressor clutch under this condition, you do not want to leave it running for long. I turn the ac button on and off while the vehicle is running and it still won't engage. I assume this means I have a bad AC clutch?? Makes sense to me too since I keep blowing fuses (AC clutch fuse in the fuse block under hood). if your just looking to get the clutch to engage on the compressor, just jump the 2 wires on the compressor. Measured resistance of the clutch coil, no continuity. What I know: Heater works fine. Jump the compressor relay next to the fuse panel under the hood. Does that mean the stator is good?(when I do this, the air coming out of the vent does cool down, but i'm not sure if it is as cool as it. Popping the hood with maximum air-conditioning selected often reveals the problem of the car AC clutch not engaging. its easy enough to test by jumping the two pins on the male connector and seein. 2012 Cruze LT ac not working. I put a new one in and it still did not engage the compressor. Remove the black caps from the high and low service ports on the Buick Century's AC unit.