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. since if the pulley was off it just would not be working. On the 2006-2011 1.8L Honda Civic, the engine powers the compressor through an accessory belt that spins the pully on the front. 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. 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. Like every one RPM it catches a little and stops. 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. Everything is fine when the AC is not engaged and the pulley seems to spin with no problems at all. It was very faint and doesnt seem to do it unless I drive my truck for a bit first. The Truck: 94 F-150 XLT 5-speed 300-I6 The Problem: AC blowing hot air. 4. An AC bypass pulley is a free spinning pulley used to replace the AC compressor on an automotive engine. 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. Adjust tension. The noise was definitely a bearing sound. It should turn freely, without any sense of binding. Well im guess when u say disconnected the compressor you mean unplugging the electrical connector. It is basically a pump with a rotor inside it that makes compression possible. Check for bent crankshaft - if bent then replace. The clutch on the compressor is what allows the pulley to engage and disengage from engine power so … (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. 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. Short cycling, when the compressor constantly shuts on and off, is one of the most common air conditioning problems. 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). - Cars & Trucks question. The compressor decides when it wants to run right. The following AC compressor install procedure by Sanden, covers the compressor oil and refrigerant specifications, and compressor … The Truck: 94 F-150 XLT 5-speed 300-I6 The Problem: AC blowing hot air. The AC Compressor delivers the refrigerant at a high pressure to the condenser. 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! If the drive belt is still disconnected, then open the hood (engine off) and manually spin the AC compressor pulley. Click to see full answer. My car has 167000 miles. Then look at the front of the compressor clutch. Adjust tension. 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. 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. A little noise most of the time but nothing alarming. Check the compressor belt(s) for wear and proper adjustment. 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). The outer ring stands 0.5mm away from the pulley and spins only when AC is used. 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! Ford A/C :: 1994 F150 - Compressor Spinning But Hot Air Blowing. 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. Belts too tight. Ben LeDoux is a student at Front Range Community College in Westminster, Colo., where he …

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