Adjust tension. 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. 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. since if the pulley was off it just would not be working. how to manually engage ac compressor clutch. Pulley out of alignment. A couple days ago I started my truck and heard a slight noise that sounded like the compressor running, the mediocre air compressor noise. 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. Belts too loose. A little noise most of the time but nothing alarming. I pulled the belt off and gave each a spin. Running the AC helped reduce the seizing, but did not stop it. Air conditioning compressor starts then stops. 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. 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. high pressure switch would stop the compressor.if it has ... when the A/C is off, the belts don’t squeal. It sounds like the compressor locked up, but it could be the clutch and pulley have definitely come apart. 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. Click to see full answer. The Truck: 94 F-150 XLT 5-speed 300-I6 The Problem: AC blowing hot air. 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 . 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. - Cars & Trucks question. 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. 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). Both the pulley and the clutch should be spinning. 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. If your air conditioner runs for less than ten minutes at a time instead, then it's probably oversized—too big for your home. 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. 1. 5. 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 then bursts of a louder noise here and there. 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. Turn the air conditioning controls to MAX AC and start the engine. $1800, please. Pulley or flywheel wobble. 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! 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! 4. So start your diagnosis by determining if the compressor clutch works. Check for bent crankshaft - if bent then replace. Realign motor pulley with compressor flywheel. I told them to cut the AC belt and give me my car back. Then look at the front of the compressor clutch. Ford A/C :: 1994 F150 - Compressor Spinning But Hot Air Blowing. It was very faint and doesnt seem to do it unless I drive my truck for a bit first. Can you get the clutch and pulley off? and when the clutch engages it overloads the engine. However, the idler pulley and the AC Compressor both were spinning just fine. You should be able to spin the pulley by hand; the clutch is not connected to the compressor when the A/C is … The A/C compressor pulley wobbled and made noise when I spun it. Fill it up until the pressure indicator on the refill canister stops moving and disconnect the refill canister. (With everything off, the pulley is riding … It is basically a pump with a rotor inside it that makes compression possible. 3. An AC bypass pulley is a free spinning pulley used to replace the AC compressor on an automotive engine. If the aircon pulley freezes and stops working altogether, this can damage the serpentine belt which powers the system. It should turn freely, without any sense of binding. Ac compressor starts and stops in F150 - F-150 Ford Cars & Trucks. 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). 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