ITs showing 3 After sitting for a couple days, the pressure had dropped very low. The belt is on the compressor and its spinning but the compressorwheel isnt engaging. Got a reman compressor, changed out the drier and expansion valve, works now! This is the black/white striped wire near the connector to the compressor. if you turn the center hub with the key off and feel it dragging on the outer hub, then its a bad sign. Like I wrote in my first post, the magnetic clutch draws a LOT of current (relatively). craftmans. also worth noting, the clutch wobbles when engaged. New OEM belts fixed the problem and my A/C blows cold again. Does the system have to be recharged to make the clutch engage. Still havent sorted out the voltage problem though, and i know its not the pressure switch. The clutch is a Warner Electric 1443-38. The electric motor on my compressor turns slow an trips the breaker was working fine the last time I used it. 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. The magnetic clutch on the compressor will draw a LOT more current than a light bulb. Pulled a vacuum (vacuum held for 15 minutes) and attempted to refill, but the compressor refuses to engage. Turned off the car and the A/C and tried turning the compressor. Q The air conditioning … Replace the fuse if … 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. The pulley turns whenever the engine is running, although the compressor clutch is not engaged when the air conditioning is turned off. The cluch pay not fully seated and is slipping. 0 0. I was thinking it was bearing. The AC clutch is faulty. 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. I turned it off, then on, and it did the same thing. 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. We use cookies to give you the best possible experience on our website. Even when you have the air conditioner cranked to max, the clutch is still cycling between being engaged and disengaged. It is normal for a vehicles system to cycle the compressor to prevent the internal pressure from exceeding certain maximum pressures within the system. 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. 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. Jumped it again, works fine??? System still cooling is this normal? After bypassing everything else, I figured that the compressor was drawing way too much juice, turns out i was right. Slowly tighten the puller to remove pulley. I will takea look at it later, hopefully will do better after taking a fresh look at it. This saves the compressor from constantly running and burning itself out. Does this indicate a failing clutch? Recently I have noticed a lot of red dust coming from the front of the clutch, and the clutch is squeaky. The AC compressor clutch often has a plug with 2 pins. Note that electric compressors are increasingly used, and not only on hybrid cars. The clutch is a "press fit" to the AC compressor front shaft. Yes. I think the car stalled because the A/C seized up. The AC compressor turns slowly at times. 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. This switch is located on the metal canister next to the compressor. It was blowing ice cold yesterday and today up until tonight. • The compressor clutch coil is simply a large coil of copper wire. 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). My A/c And My Radiator Cooling Fans Quit Working At About The Same Time. Remove the connector and force it with 12v and ground. Upon starting the engine the clutch face looks like it is engaging and stops after a few seconds. It is an ominous sign when the clutch engages but the compressor does not spin. I'm trying to understand the operation of the AC system on my car so I can bring it back to life. Wait for the AC clutch in front of the compressor body to engage and spin. If I... Air Conditioning Problem Car ac compressor runs intermittently. It all depends on where you measure the voltage and whether the wires are all connected and energized or not. i've got a 91 LX 5L and the AC blows cold for 10 minutes or so, then my compressor shuts off. My compressor was acting the same way. I'm giving up for a couple days, have to work and dont have time to foll with it. The clutch engages, but the compressor turns very slowly. It is natural for your car A/C compressor to cycle on and off. 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. by gary (Ponca City, OK.) 33 gal. It may not display this or other websites correctly. A bad AC compressor clutch needs immediate fixing. Still tracking... May have narrowed it down some, at the wire coming from the ac amplifier behind the glovebox, I have low voltage too. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. View attachment 2666241 To run this clutch compressor, the engine is connected directly to the pump rotor of the compressor using a belt. Check power wire to the ac clutch 13.96 wtf?? Ive got 5v to the temp switch under the intake as well. My 94 Cherokee (apparently not great AC systems to begin with) seems to be blowing only slightly cool air when AC … have the same problem? If it does not, shut the engine off and disconnect the negative battery cable with a socket. The hub was turning slow and I was getting warm air. Pull out the AC fuse and examine the filament inside the fuse. 1998 Chevy Malibu 6 Cyl Two Wheel Drive Automatic The clutch turns really slowly and makes a horrid noise. 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. Guess im off tto get a new multitester this morning. When the driver requests AC, the system provides power to the clutch coil, thereby generating a magnetic field. However, since it consistently is cycling on and off, it starts to wear and break. Got a used compressor off of a newer car with 12k on it. To run this compressor, the car’s engine is directly connected to the pump rotor of the compressor with a belt. Most car AC systems use an electromagnetic clutch element that engages the compressor to spin the air conditioning unit. If it’s hot in a situation of car air conditioner blowing hot air, then it’s an engine problem. Do you. When the switch goes bad, it will no longer be able to measure pressure and will leave the clutch engaged the entire time. Changing the compressor clutch could be the only solution in this case. Retighten it and see what happens. AC system (compressor, condensor, evap., lines, etc.) Locate and if necessary secure pulley key. 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. Its getting power to it, but i havent had time yet to check everything. Automotive air conditioning system uses an electromagnetic clutch mechanism that engages the compressor to turn the AC unit. on Sat Aug 11 08:54 CST 2007 > V << < > >> Users marked in green are currently online. So far I have: Checked the fuses for AC and clutch under the bonnet. That is why the voltage drops so much when you make the connection to the clutch. 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. Also, when running a jumper to the compressor, there is no voltage drop to the original compressor wire. Advice, i figured that the clutch does operate < > > > Users marked in green are online. An electromagnetic coil currently online the last time it was blowing ice cold yesterday and today up until.. 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