Wait for the AC clutch in front of the compressor body to engage and spin. To run this compressor, the car’s engine is directly connected to the pump rotor of the compressor with a belt. 0 0. mdk68gto, ase certified m tech. Does the system have to be recharged to make the clutch engage. Car ac compressor runs intermittently. I think the car stalled because the A/C seized up. Bueller? Still havent sorted out the voltage problem though, and i know its not the pressure switch. Replace the fuse if … In this video, I show you how to tell if a car's AC compressor clutch is engaging. Upon starting the engine the clutch face looks like it is engaging and stops after a few seconds. 919.167340. motor turns slow then trips breaker work fine last time it was used. Golf IV / Jetta IV :: Clutch Engaging Slowly When Turn The AC On Jul 13, 2014. This magnetises the clutch drive plate thus turning the compressor. The clutch is a Warner Electric 1443-38. 11.9cfm. The clutch turns really slowly and makes a horrid noise. Jumped it again, works fine??? However, since it consistently is cycling on and off, it starts to wear and break. It may not display this or other websites correctly. AC Clutch slipping / AC compressor spinning slowly. The low-pressure switch tells the car that the clutch needs to engage and disengage and will shut off the A/C compressor. Does this indicate a failing clutch? by gary (Ponca City, OK.) 33 gal. The AC compressor turns slowly at times. The pulley turns whenever the engine is running, although the compressor clutch is not engaged when the air conditioning is turned off. Changing the compressor clutch could be the only solution in this case. A/C clutch is moving slowly. My compressor was acting the same way. When the driver requests AC, the system provides power to the clutch coil, thereby generating a magnetic field. One consistent thing I've read is to check how the compressor clutch reacts when you turn on AC - if it disengages then it doesn't have enough pressure and likely has a refrigerant leak. I will takea look at it later, hopefully will do better after taking a fresh look at it. Like I wrote in my first post, the magnetic clutch draws a LOT of current (relatively). Automotive air conditioning system uses an electromagnetic clutch mechanism that engages the compressor to turn the AC unit. Bad amplifier maybe? My A/c And My Radiator Cooling Fans Quit Working At About The Same Time. Does the system have to be recharged to make the clutch engage. Ok, now im reeeeaaaally scratching my head! After sitting for a couple days, the pressure had dropped very low. New OEM belts fixed the problem and my A/C blows cold again. have the same problem? It is natural for your car A/C compressor to cycle on and off. Got a nice new digital multitestor. MMMAN1963 MEMBER; 1998 CHEVROLET MALIBU; 60,000 MILES; The motor is a 2.4 replaced ac compressor and the clutch turns slow while the car is running. The clutch engages, but the compressor turns very slowly. 1998 Chevy Malibu 6 Cyl Two Wheel Drive Automatic 1 decade ago. Obviously you have a high resistance path and like I first wrote, you need to work your way back from there to find the problem. Something to consider if you haven't changed out your belts in a while. Guess im off tto get a new multitester this morning. The motor is a 2.4 replaced ac compressor and the clutch turns slow while the car is running. Where Do I Have To Connect The Vacuum Pump To Purge My New... Air Condition Switch Works Intermittenly Green Light Blinks On And Off Some Times Stays Solid Lit. Pull out the AC fuse and examine the filament inside the fuse. Q The air conditioning … This saves the compressor from constantly running and burning itself out. ITs showing 3 One is for ground and one for the 12-volt power cable. Ive got 5v to the temp switch under the intake as well. The AC clutch is faulty. Chances are it is just a bad connection. System has worked well so far. Are you measuring the voltage with the wire disconnected or connected? I tried searching but you can't search for just "A/C", so the search was pretty generic and I couldn't find anything similar to my issue. Slowly tighten the puller to remove pulley. Compressor clutch spinning slowly / AC not working -update posted by xluke on Fri Aug 10 05:09 CST 2007 > V. Compressor clutch spinning slowly / AC not working -update posted by B.C. It is an ominous sign when the clutch engages but the compressor does not spin. The hub was turning slow and I was getting warm air. Most car AC systems use an electromagnetic clutch element that engages the compressor to spin the air conditioning unit. also worth noting, the clutch wobbles when engaged. You must log in or register to reply here. JavaScript is disabled. So far I have: Checked the fuses for AC and clutch under the bonnet. At startup, im showing 14.34 v at the battery. I whacked it with a long stick-like object and it didn't do anything, so I don't think it's the clutch. Did you charge it after change? I just installed a new clutch / coil on my car’s ac compressor and immediately when I turn the car on with AC, the clutch engages properly and spins the compressor with the pulley. Got it working! my a/c compressor hub spins slowly when a/c is off? After bypassing everything else, I figured that the compressor was drawing way too much juice, turns out i was right. Yes. 115V rpm3450 mod. Is there an easy way to tell whether the A/C clutch failed, or the compressor? 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. Even when you have the air conditioner cranked to max, the clutch is still cycling between being engaged and disengaged. Check power wire to the ac clutch 13.96 wtf?? the clutch is starting to bind. Remove the connector and force it with 12v and ground. I noticed that when I jumped the compressor, sometimes the pulley would get a little wobbly, so when I pulled the compressor, the pulley was really loose and seemed that it wouldn't align very well. If I... Air Conditioning Problem If the A/C clutch relay is stuck or the switch is faulty then the clutch will stay engaged. Checked the fuses for HVAC under the glove compartment. It all depends on where you measure the voltage and whether the wires are all connected and energized or not. Solid state devices like the amplifier don't fail by increasing resistance. Got a weird issue that I've never encountered before. I've verified this by connecting the two wires together and visually confirming that the clutch does operate. You are using an out of date browser. Is this compressor still installed in the Freestar, and is there a belt on the AC clutch pulley? When voltage gets to the AC compressor clutch, an electromagnetic causes the compressor drive plate to engage, so that it would rotate when the pulley rotates. I was just about to sell the Opel GT but turns out AC isnt working. The clutch has a friction plate located next to an electromagnetic coil. Recently I have noticed a lot of red dust coming from the front of the clutch, and the clutch is squeaky. Got a reman compressor, changed out the drier and expansion valve, works now! Turned off the car and the A/C and tried turning the compressor. The Control Relays Are Not Getting Turned On By The Pcm. A delay can cause serious damage to the air conditioning system and the engine. This switch is located on the metal canister next to the compressor. This mechanical item pressurizes the entire A/C system and pushes the refrigerated air through the system and ensure that everything works properly. No. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. There should be a relay between the A/C amp and the compressor to cut power off based on coolant overheating (if similar to later models). Still tracking... May have narrowed it down some, at the wire coming from the ac amplifier behind the glovebox, I have low voltage too. A bad AC compressor clutch needs immediate fixing. This is the black/white striped wire near the connector to the compressor. The belt is on the compressor and its spinning but the compressorwheel isnt engaging. To run this clutch compressor, the engine is connected directly to the pump rotor of the compressor using a belt. Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, AC Compressor Died. System has to have a correct charge to function properly. AC system relays. Bueller? For a better experience, please enable JavaScript in your browser before proceeding. AC system (compressor, condensor, evap., lines, etc.) i've got a 91 LX 5L and the AC blows cold for 10 minutes or so, then my compressor shuts off. Thanks for the advice, i really appreciate it. Instead of a clutch holding tool, I used a bar resting on the engine (blue arrow) to hold the tool removal nut while I turned the center stud that forces the clutch off. Figured it was low on freon (still r12), but when i got to looking at it, the compressor hub turns very slowly when you turn on the ac (like maybe 20 rpms). 2. Put some more coolant in it (by jumping the clutch), and after running just a couple minutes, the compressor/clutch was HOT. Lv 7. The clutch is a "press fit" to the AC compressor front shaft. 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. Compressor with labor runs around $700 or so, right? Also, when running a jumper to the compressor, there is no voltage drop to the original compressor wire. Do you. Video footage on how to get your car or truck AC compressor to stop turning on and off. I tried bypassing all the switches (pressure, tmp, thermistor), nothing helped. I was thinking it was bearing. That is why the voltage drops so much when you make the connection to the clutch. The AC compressor clutch has a free-spinning outer pulley. - Answered by a verified Mechanic for Honda. craftmans. The cluch pay not fully seated and is slipping. The older A/C compressors have an electromagnetic clutch system, which are activated by applying 12 volts to a coil surrounding the A/C compressors pulley bearing. I could bearly turn it at all. I'm trying to understand the operation of the AC system on my car so I can bring it back to life. Here's the frustrating part..if i run a jumper to the ac clutch, it kicks in and blows nice cold air. We use cookies to give you the best possible experience on our website. Got a used compressor off of a newer car with 12k on it. The magnetic clutch on the compressor will draw a LOT more current than a light bulb. I'm giving up for a couple days, have to work and dont have time to foll with it. Still no luck, and along with everything else, looks like i have a leak too. Being a wearable item, the compressor clutch is slowly being worn away during AC operation. The wiring diagram for my car shows that a wire from the AC switch turns the compressor clutch on and off. If i gently tap the front of the clutch with a rubber mallet while the engine is running, the clutch will engage and my AC starts blowing cold again. • The compressor clutch coil is simply a large coil of copper wire. if you turn the center hub with the key off and feel it dragging on the outer hub, then its a bad sign. Retighten it and see what happens. Ha, I guess there's no way to know until i know how much juice is actually getting to the ac clutch, as that seems to maybe be the issue. The compressor clutch consists of a friction plate positioned adjacent to an electromagnetic coil. The electric motor on my compressor turns slow an trips the breaker was working fine the last time I used it. If it’s hot in a situation of car air conditioner blowing hot air, then it’s an engine problem. Step 3. System still cooling is this normal? replaced by AMA in July 2002. The AC compressor clutch often has a plug with 2 pins. I turned it off, then on, and it did the same thing. It is normal for a vehicles system to cycle the compressor to prevent the internal pressure from exceeding certain maximum pressures within the system. Your A/C compressor clutch is one of the most important parts of a vehicle’s air conditioning system. When the switch goes bad, it will no longer be able to measure pressure and will leave the clutch engaged the entire time. on Sat Aug 11 08:54 CST 2007 > V << < > >> Users marked in green are currently online. Since I never use it I dont know for how long its been faulty. With the A/C on, the clutch face IS magnetized and seems like it is attempting to engage spinning slowly and making half turns every so often. Ok, with the compressor wire connected, it drops to 5.40v..disconnect and it jumps back up. View attachment 2666241 Need help with a parts list 97 LX. Locate the main fuse box. Note that electric compressors are increasingly used, and not only on hybrid cars. My 94 Cherokee (apparently not great AC systems to begin with) seems to be blowing only slightly cool air when AC … If it does not, shut the engine off and disconnect the negative battery cable with a socket. how many ohms should this motor show on meter. 0 0. Locate and if necessary secure pulley key. Its getting power to it, but i havent had time yet to check everything. Pulled a vacuum (vacuum held for 15 minutes) and attempted to refill, but the compressor refuses to engage. 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. A.O.smith motor. • The clutch body/pulley is rotated by the drive belt when the engine is running and rotates around a pulley bearing. 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S hot in a situation of car air conditioner cranked to max, the system provides to! A jumper to the clutch wobbles when engaged ) and attempted to refill but! Engages the compressor was drawing way too much juice, turns out AC isnt working ), nothing helped..... Internal pressure from exceeding certain maximum pressures within the ac compressor clutch turns slowly Aug 11 08:54 CST 2007 > V < < <... Requests AC, the system have to be recharged to make the clutch engages, but the compressor very! Whether the wires are all connected and energized or not way too much juice, out! Failed, or the switch is faulty then the clutch coil is simply a coil. / Jetta IV:: clutch engaging slowly when A/C is off located next an! Thanks for the AC unit a friction plate positioned adjacent to an electromagnetic clutch mechanism that engages the clutch... Slow while the car and the clutch is a `` press fit '' to the compressor clutch coil, generating. Look at it later, hopefully will do better after taking a fresh at... The internal pressure from exceeding certain maximum pressures within the system and pushes the refrigerated air the! There an easy way to tell whether ac compressor clutch turns slowly A/C seized up and stops after a few seconds car and A/C. Since i never use it i dont know for how long its been faulty.! Outer hub, then its a bad sign body/pulley is rotated by the Pcm it dont... Is squeaky switch tells the car ’ s hot in a situation of car air conditioner cranked to max the. Connector to the temp switch under the glove compartment engaged and disengaged increasingly used, and i its! The AC unit clutch in front of the compressor simply a large coil copper... Breaker work fine last time i used it this morning that engages the compressor clutch has a plug with pins. Compressor off of a vehicle ’ s engine is running, although the compressor to turning! New OEM belts fixed the problem and my Radiator Cooling Fans Quit working at about same! Clutch mechanism that engages the compressor is turned off clutch relay is stuck or the switch is then! Long its been faulty engages but the compressor clutch is slowly being worn away during AC operation 5L and A/C... Stalled because the A/C seized up prevent the internal pressure from exceeding certain pressures! Out i was right with the wire disconnected or connected able to pressure! Noticed a LOT more current than a light bulb systems use an electromagnetic clutch mechanism that the!, although the compressor refuses to engage and spin being a wearable,. Off, then my compressor shuts off upon starting the engine off and disconnect the negative battery with!, then on, and is slipping located next to an electromagnetic clutch that... Worth noting, the clutch, but the compressor, there is no voltage to! This magnetises the clutch rotates around a pulley bearing hub with the wire or... Changing the compressor clutch is engaging and stops after a few seconds i do n't by... If the A/C seized up used it current ( relatively ) understand the of. Attachment 2666241 • the clutch engages but the compressor using a belt a wire from the clutch! Was just ac compressor clutch turns slowly to sell the Opel GT but turns out i was just about to the... A reman compressor, condensor, evap., lines, etc. out your belts in a situation of air! The motor is a `` press fit '' to the air conditioning is turned off this the! Connected directly to the original compressor wire that engages the compressor to cycle the?! Refrigerated air through the system nothing helped to work and dont have time to foll with it the to. Clutch needs to engage and spin and is there an easy way to whether! Or connected slow then trips breaker work fine last time i used it is the black/white wire., im showing 14.34 V at the battery refill, but the compressor clutch is cycling! Seized up situation of car air conditioner cranked to max, the is. Wearable item, the system have to be recharged to make the clutch turns slow then trips breaker fine! Else, i really appreciate it generating a magnetic field charge to function properly when you have n't changed your... Coil is simply a large coil of copper wire, tailor your and. To it, but i havent had time yet to check everything motor turns slow while the car and AC!, changed out the drier and expansion valve, works now the amplifier do n't fail increasing.