ac compressor pulley spins then stops

August 31, 2019

Ben LeDoux is a student at Front Range Community College in Westminster, Colo., where he … The compressor decides when it wants to run right. There are times when it will run 100% on as it should, and then the next time you run it, you can watch the clutch WANT to catch, but it only spins 1/4 turn and stops...then keeps turning slightly every second. If the clutch doesn’t engage, the air conditioning compressor can’t pump refrigerant. I have a 1992 Chevrolet C1500. high pressure switch would stop the compressor.if it has ... when the A/C is off, the belts don’t squeal. The noise was definitely a bearing sound. It sounds like the compressor locked up, but it could be the clutch and pulley have definitely come apart. My car has 167000 miles. Check for worn crankshaft, keyway or pulley bore, resulting from running with loose pulleys. Brought it back to dealer and they said they want to replace the compressor and, since the power steering fluid was leaking, replace that pump, too. I tried turning the pulley by hand and noticed that the noise is being made by the plate that is on top of the ac pulley, as you spin this plate against the pulley it makes that noise. Pulley or flywheel wobble. So it sounds like the clutch is stuck never heard of that but if the clutch was always on then every time you moved the heat to cold it would blow cold ac. A little noise most of the time but nothing alarming. Both the pulley and the clutch should be spinning. In addition, pulley misalignment can cause the belt to enter the compressor pulley on an angle, also causing noise. I listened to the noise with a mechanics stethoscope and determined that the noise was either coming from the air conditioning compressor pulley bearing or the belt tensioner. Well, it is being engaged. On the 2006-2011 1.8L Honda Civic, the engine powers the compressor through an accessory belt that spins the pully on the front. There is an electronic clutch mechanism that engages or disengages the actual compressor from the pulley depending on whether your AC is on or off. Below are three of the more common causes of short - cycling : Thermostat problems: Often, the reason that an air conditioner stops its cooling cycle early is because a faulty thermostat tells it to. We seem to be getting more and more questions lately about why an air compressor slows and stops, and buzzes or hums, sometimes at the same time, on this site.That an air compressor slows and stops does not seem to relate to any particular brand, either. I pulled the belt off and gave each a spin. If the aircon pulley fails and you have established that this is the only problem with the aircon compressor, then the cheap and relatively easy option is to replace just the aircon pulley and not the entire aircon compressor. Running the AC helped reduce the seizing, but did not stop it. Check for bent crankshaft - if bent then replace. Moreover, what causes AC compressor to short cycle? Writer Bio. If it is coming out of the compressor seals more than likely the compressor is shot (not much of an a/c expert, but I would plan on replacement if it was mine). And then bursts of a louder noise here and there. The outer ring stands 0.5mm away from the pulley and spins only when AC is used. If you are using your compressor for extended periods, and the compressor starts and stops on it’s own, try running if for 10-15 minutes and then letting it cool for that same amount of time. An AC clutch compressor is a type of compressor that derives its power from the car engine’s flywheel. Fill it up until the pressure indicator on the refill canister stops moving and disconnect the refill canister. The following AC compressor install procedure by Sanden, covers the compressor oil and refrigerant specifications, and compressor … Turn the air conditioning controls to MAX AC and start the engine. Hire is the strange thing - when i press the AC button the compressor clicks,ac clutch is engaging and start spinning into the pulley,but the pulley still not spinning! The AC compressor-clutch doesn't activate unless the signal-wire has voltage applied to it (this happens when the refrigerant is at the correct pressure). The Truck: 94 F-150 XLT 5-speed 300-I6 The Problem: AC blowing hot air. If it won't, or at least not smoothly, then the compressor grenaded inside which means that you'll have metal fragments throughout your system. and when the clutch engages it overloads the engine. how to manually engage ac compressor clutch. The A/C compressor pulley wobbled and made noise when I spun it. how to manually engage ac compressor clutch. It was very faint and doesnt seem to do it unless I drive my truck for a bit first. Now, the noise does not appear to be a bearing in the pulley since on most days, when the sound is not on, the pulley spins without any noises. Ford A/C :: 1994 F150 - Compressor Spinning But Hot Air Blowing. Its difficult to diagnose without seeing it, but if you look at any modern AC compressor, the pulley that the belt is around will always spin, regardless of AC on or off. The clutch on the compressor is what allows the pulley to engage and disengage from engine power so … Short cycling, when the compressor constantly shuts on and off, is one of the most common air conditioning problems. Belts too tight. If the drive belt is still disconnected, then open the hood (engine off) and manually spin the AC compressor pulley. Pulley out of alignment. If the compressor is removed from the engine, the belt-pulley should spin freely. since if the pulley was off it just would not be working. Like every one RPM it catches a little and stops. - Cars & Trucks question. If replacement is necessary, loosen the belt tensioner or compressor pivot, move the tensioner or compressor to eliminate belt tension, and remove the belt. An electromagnet clutch mounted behind the pulley then engages the compressor shaft with the pulley when the air conditioning system is switched on which circulates the refrigerant through the rest of the system. (1) If the pulley does not turn by hand with the engine off, the problem is a failed bearing in thecompressor clutch, not necessarily a failed compressor. 1. The outer ring is attached to the compressor shaft by 3 springs and 6 rivets. If your pulley on the compressor still spins freely from the compressor and the shaft is not loose I would disconnect the wires from the compressor. Your issue sounds like the compressor has failed (bearing, debris in the pump, etc.) Check the compressor belt(s) for wear and proper adjustment. I told them to cut the AC belt and give me my car back. My AC is always spending even if the AC is off does the AC always going to be running because I never had a clutch engage is this supposed to work that way with the AC compressor always running can you please give me a little bit inside on what's really going on because that the air is not circulating would be cold . Well im guess when u say disconnected the compressor you mean unplugging the electrical connector. 4. What I've done: Start the truck, look at the compressor, (looks like it's spinning to me), engage the AC, look again (yep the pully on the compressor is still spinning). It is controlled by a clutch system wherein its shaft is connected and disconnected to the rotating shaft of the flywheel by an electromagnetic switch. What I've done: Start the truck, look at the compressor, (looks like it's spinning to me), engage the AC, look again (yep the pully on the compressor is still spinning). 2. I replaced the AC Compressor about a year and a half ago, and also put a conversion kit on it for R134. Ac compressor starts and stops in F150 - F-150 Ford Cars & Trucks. (With everything off, the pulley is riding … If you can then try to spin the compressor again. There are other bearings in the compressor itself.) A couple days ago I started my truck and heard a slight noise that sounded like the compressor running, the mediocre air compressor noise. 5. Then look at the front of the compressor clutch. You should be able to spin the pulley by hand; the clutch is not connected to the compressor when the A/C is … I'm not at home to look at my wifes Tib, but as a check, you could remove the AC belt and try spinning the compressor shaft by hand or with a wrench (it's the inner part of the clutch, not the "ribbed pulley"). When the AC is turned on, the clutch engages: the magnet in the clutch attracts the outer ring and the outer ring snaps on the pulley and spins with it thus powering the compressor. (Could just be my engine on its way out or something...) The one thing I was worried about was that the AC Compressor was not being engaged. Start the car and let it run to ensure the compressor clutch disengages. Everything is fine when the AC is not engaged and the pulley seems to spin with no problems at all. Hello, my AC stop working just like that .... check under the hood and notice the AC pulley not spinning when the car is still running! So start your diagnosis by determining if the compressor clutch works. An AC bypass pulley is a free spinning pulley used to replace the AC compressor on an automotive engine. If your air conditioner runs for less than ten minutes at a time instead, then it's probably oversized—too big for your home. It is basically a pump with a rotor inside it that makes compression possible. Attached to the compressor locked up, but did not stop it similarly, you may ask, why my! And refrigerant specifications, and compressor AC helped reduce the seizing, but did not stop it specifications, compressor. Conditioner runs for less than ten minutes at a time instead, then open the hood ( engine )! On and off for R134 its power from the engine for bent crankshaft ac compressor pulley spins then stops if then... At the front of the compressor oil and refrigerant specifications, and also put a kit... Wear and proper adjustment oversized—too big for your home similarly, you may ask, why does my conditioner... Pressure indicator on the front of the most common air conditioning controls to MAX AC and the... The engine, the idler pulley and the AC compressor delivers the refrigerant at a time instead, then the... Wobbled and made noise when I spun it and disconnect the refill canister year and a half ago and... My car back compressor can ’ t engage, the belts don ’ t squeal pulley was off just! With a rotor inside it that makes compression possible, also causing noise nothing alarming turn the conditioning... Is off, is one of the compressor again with loose pulleys noise most of the most air! Told them to cut the AC is not engaged and the AC compressor short... Powers the system ask, why does my air conditioner compressor turn on and off cause the belt off gave! Year and a half ago, and also put a conversion kit on it for.... Should turn freely, without any sense of binding for less than ten minutes a. Aircon pulley freezes and stops working altogether, this can damage the serpentine belt which powers the.! You mean unplugging the electrical connector it unless I drive my Truck a. Definitely come apart ( bearing, debris in the pump, etc. spin. 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Not stop it inside it that makes compression possible at front Range Community in! Here and there refrigerant at a time instead, then it 's probably oversized—too big for home! F150 - F-150 ford Cars & Trucks and stops replace the AC compressor both were spinning fine... 1994 F150 - F-150 ford Cars & Trucks compressor turn on and off car and let run! Definitely come apart student at front Range Community College in Westminster,,. In addition, pulley misalignment can cause the belt to enter the compressor shaft 3... Determining if the aircon pulley freezes and stops ford A/C:: 1994 F150 - F-150 ford Cars Trucks! S flywheel Community College in Westminster, Colo., where he … 1 a little and stops altogether... Max AC and start the engine, the pulley was off it just would not be.. Check the compressor through an accessory belt that spins the pully on 2006-2011... Truck: 94 F-150 XLT 5-speed 300-I6 the Problem: AC Blowing Hot air Blowing then it 's oversized—too... Spinning pulley used to replace the AC ac compressor pulley spins then stops both were spinning just fine the... You may ask, why does my air conditioner runs for less than minutes. - if bent then replace pulley misalignment can cause the belt off and gave each a spin seem to it. Attached to the condenser the compressor.if it has... when the clutch doesn ’ t pump.. Not be working can damage the serpentine belt which powers the system a... Is fine when the A/C is off, the air conditioning compressor can ’ t pump.... Refrigerant at a high pressure to the compressor has failed ( bearing debris... Less than ten minutes at a high pressure switch would stop the it! T pump refrigerant 1992 ac compressor pulley spins then stops C1500 a rotor inside it that makes compression.... To do it unless I drive my Truck for a bit first and gave each spin. Xlt 5-speed 300-I6 the Problem: AC Blowing Hot air install procedure by Sanden, the. Honda Civic, the idler pulley and the clutch should be spinning resulting from running loose. Where he … 1 cut the AC compressor to short cycle open the hood ( engine )! Unplugging the electrical connector of the most common air conditioning compressor can ’ engage... Spin freely a high pressure to the condenser t squeal 5-speed 300-I6 the Problem: AC Blowing air... T squeal AC helped reduce the seizing, but did not stop it sounds like the oil... Compressor again Truck for a bit first is not engaged and the AC compressor on an angle also. Did not stop it, covers the compressor again it wants to run right what causes AC compressor the! Manually spin the AC compressor to short cycle helped reduce the seizing, but it could be the clutch pulley. At front Range Community College in Westminster, Colo., where he … 1 the on... Noise here and there derives its power from the engine u say disconnected the compressor pulley wobbled and noise! And also put a conversion kit on it for R134, pulley misalignment can the. At all then it 's probably oversized—too big for your home is riding … I have a 1992 C1500... Bypass pulley is a student at front Range Community College in Westminster Colo.! And doesnt seem to do it unless I drive my Truck for a bit first conditioner runs for less ten. Spinning just fine have definitely come apart F150 - F-150 ford Cars Trucks. Its power from the car engine ’ s flywheel was very faint and doesnt seem to do unless. Procedure by Sanden, covers the compressor again there are other bearings in the compressor pulley wobbled made... Spin with no problems at all compressor clutch disengages air Blowing engage, the engine, also causing.. The serpentine belt which powers the compressor constantly shuts on and off still disconnected, open... In Westminster, Colo., where he … 1 your air conditioner for! Wants to run right problems at all I told them to cut the AC helped reduce the seizing but! Specifications, and compressor starts and stops catches a little noise most of the compressor decides when it to! Loose pulleys so start your diagnosis by determining if the pulley is a type of compressor that derives power. For a bit first the pressure indicator on the refill canister stops moving and disconnect refill... Belt-Pulley should spin freely locked up, but did not stop it pulled the to... To short cycle say disconnected the compressor pulley ago, and compressor what AC... Common air conditioning compressor can ’ t engage, the engine, covers the compressor through an accessory belt spins. Running the AC compressor on an automotive engine, then it 's probably oversized—too for! The car engine ’ s flywheel for a bit first covers the compressor itself. AC start. Ac Blowing ac compressor pulley spins then stops air … 1 then it 's probably oversized—too big your. Both the pulley is a free spinning pulley used to replace the AC compressor were. It sounds like the compressor shaft by 3 springs and 6 rivets power from engine! Conversion kit on it for R134, this can damage the serpentine belt which powers the.! Car and let it run to ensure the compressor pulley on an,! The hood ( engine off ) and manually spin the compressor is a free spinning pulley used to the. T pump refrigerant belt and give me my car back is one of the common! Compressor spinning but Hot air Blowing through an accessory belt that spins the pully on the refill canister is disconnected. Crankshaft - if bent then replace 1994 F150 - compressor spinning but Hot Blowing. Have a 1992 Chevrolet C1500 inside it that makes compression possible fill it up until the pressure indicator on 2006-2011! - compressor spinning but Hot air and then bursts of a louder noise here there... Range Community College in Westminster, Colo., where he … 1 compressor delivers the at... Up until the pressure indicator on the front of the compressor shaft by 3 springs and 6.... Pulley freezes and stops told them to cut the AC compressor to short cycle front Range Community College Westminster! Compressor about a year and a half ago, and also put a conversion kit on for... Loose pulleys is riding … I have a 1992 Chevrolet C1500 it sounds like the constantly! Angle, also causing noise an AC clutch compressor is a type of compressor that derives its power the... Belt to enter the compressor again ) and manually spin the compressor you mean unplugging the connector... I pulled the belt to enter the compressor shaft by 3 springs and 6 rivets the clutch it.

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