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ac compressor pulley spins then stops

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. Adjust tension. On the 2006-2011 1.8L Honda Civic, the engine powers the compressor through an accessory belt that spins the pully on the front. Start the car and let it run to ensure the compressor clutch disengages. 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. Then look at the front of the compressor clutch. 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. 1. 5. However, the idler pulley and the AC Compressor both were spinning just fine. An AC clutch compressor is a type of compressor that derives its power from the car engine’s flywheel. If you can then try to spin the compressor again. The clutch on the compressor is what allows the pulley to engage and disengage from engine power so … Pulley out of alignment. The following AC compressor install procedure by Sanden, covers the compressor oil and refrigerant specifications, and compressor … The noise was definitely a bearing sound. Check for worn crankshaft, keyway or pulley bore, resulting from running with loose pulleys. In addition, pulley misalignment can cause the belt to enter the compressor pulley on an angle, also causing noise. and when the clutch engages it overloads the engine. 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 . since if the pulley was off it just would not be working. Pulley or flywheel wobble. Turn the air conditioning controls to MAX AC and start the engine. Click to see full answer. It is basically a pump with a rotor inside it that makes compression possible. Belts too loose. I have a 1992 Chevrolet C1500. If replacement is necessary, loosen the belt tensioner or compressor pivot, move the tensioner or compressor to eliminate belt tension, and remove the belt. Everything is fine when the AC is not engaged and the pulley seems to spin with no problems at all. 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. Ben LeDoux is a student at Front Range Community College in Westminster, Colo., where he … It should turn freely, without any sense of binding. I replaced the AC Compressor about a year and a half ago, and also put a conversion kit on it for R134. Similarly, you may ask, why does my air conditioner compressor turn on and off? (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. 3. - Cars & Trucks question. Both the pulley and the clutch should be spinning. $1800, please. 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. You should be able to spin the pulley by hand; the clutch is not connected to the compressor when the A/C is … how to manually engage ac compressor clutch. Short cycling, when the compressor constantly shuts on and off, is one of the most common air conditioning problems. (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. 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. An AC bypass pulley is a free spinning pulley used to replace the AC compressor on an automotive engine. The outer ring is attached to the compressor shaft by 3 springs and 6 rivets. If the drive belt is still disconnected, then open the hood (engine off) and manually spin the AC compressor pulley. Can you get the clutch and pulley off? I pulled the belt off and gave each a spin. The Truck: 94 F-150 XLT 5-speed 300-I6 The Problem: AC blowing hot air. 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). The pulley spins free ... compressor drain all the oil out of it by spinning the clutch while dumping it upside down.Look up the spec for the compressor and and add 1 oz. 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. The compressor decides when it wants to run right. Fill it up until the pressure indicator on the refill canister stops moving and disconnect the refill canister. 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. I told them to cut the AC belt and give me my car back. The A/C compressor pulley wobbled and made noise when I spun it. If the compressor is removed from the engine, the belt-pulley should spin freely. If you need an air compressor to run for continuous periods on a frequent basis, it may be that the tool demand exceeds the capacity of the compressor, it runs too long, and goes off on thermal cut out. Belts too tight. Realign motor pulley with compressor flywheel. 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. It was very faint and doesnt seem to do it unless I drive my truck for a bit first. Ford A/C :: 1994 F150 - Compressor Spinning But Hot Air Blowing. Check the compressor belt(s) for wear and proper adjustment. 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. When the AC compressor goes bad in a vehicle, a consumer often will choose to install an AC bypass pulley.AC bypass pulleys are much cheaper than a new AC compressor. 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! Ac compressor starts and stops in F150 - F-150 Ford Cars & Trucks. There are other bearings in the compressor itself.) 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! 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'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"). Running the AC helped reduce the seizing, but did not stop it. 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. how to manually engage ac compressor clutch. 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). high pressure switch would stop the compressor.if it has ... when the A/C is off, the belts don’t squeal. Air conditioning compressor starts then stops. 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. A couple days ago I started my truck and heard a slight noise that sounded like the compressor running, the mediocre air compressor noise. 4. 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. 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. The AC Compressor delivers the refrigerant at a high pressure to the condenser. Check for bent crankshaft - if bent then replace. Writer Bio. Ford A/C :: 1994 F150 - Compressor Spinning But Hot Air Blowing. Adjust tension. 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. The belt seems tight enough but when the AC is engaged, the belt immediately starts squealing and it looks as though the pulley on the compressor itself stops 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). My car has 167000 miles. Well im guess when u say disconnected the compressor you mean unplugging the electrical connector. Moreover, what causes AC compressor to short cycle? 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). 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. (With everything off, the pulley is riding … So start your diagnosis by determining if the compressor clutch works. Your issue sounds like the compressor has failed (bearing, debris in the pump, etc.) A little noise most of the time but nothing alarming. 2. Like every one RPM it catches a little and stops. Well, it is being engaged. The Truck: 94 F-150 XLT 5-speed 300-I6 The Problem: AC blowing hot air. It sounds like the compressor locked up, but it could be the clutch and pulley have definitely come apart. 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When I spun it misalignment can cause the belt to enter the locked!

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