The most noteworthy of these switches include low pressure switches, high pressure switches, and evaporator temperature sensors. Failure of any type within this unit can prevent a clutchs coil from being energized. Starting the truck with A/C on will yield about 15-30 secs of ice cold air (compressor engaging) then compressor quits and here comes the heat wave. Performance upgrades, maintenance, modifications and problem solving. When the heater is on the temperature is above 20 C and the AC can be in defrost mode. A vehicles air conditioner compressor clutch serves as the make/break point for power distribution to an A/C compressors internal drive components. [/QUOTE A/C has around 97 psi on high and low with ac max compressor not engaged. 15 people found this helpful. My A/c Blows Warm Air No Matter What Setting It Is On. 3. No matter where you live if your Ford Escapes AC compressor is not turning on, it can turn a pleasant commute into a nightmare (particularly if you have kids that are riding with you). The two most vital parts of a cars AC system is the compressor and the clutch. -or-. If you notice that the belt is slipping then you would have to adjust it. . That is RIDICULOUS, Cheryl. That activity is pre-programmed into the PCM so it's done regardless of the settings of the HVAC system. If the fuse isnt blown, you need to move on to one of the other possible fixes. This is usually the most common problem with car AC systems, so its always wise to start here. A vehicles A/C system stops the summer swelter in its tracks, replacing it instead with a comforting chill. Fill it up until the pressure indicator on the refill . The compressor clutch uses an electromagnet to grab the pulley and turn the compressor. The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. I will have another root around for the issue, not really too concerned - might look to manually run the AC pump directly at the clutch end (its easy to get to) and see if the AC blows cool, if it doesn't then it might need regassing - eg its under pressure so it won't run. That is why the pressure switch is there. It is also a simple replacement to do. In turn, the A/C system clutch disengages. When the shop did the evacuation, how many ouces of refrigerant did the machine recover? I Am Seking Problem Stop Safely. This means you would have to spend to get a new compressor, however, it will save you time and money. Check the front of the compressor clutch. It could also be of poor ground or a low-pressure lockout. Check your owners manual to find the fuse for the AC clutch. If an open condition exists on any wires within this circuit, the compressors clutch will not operate. RELATED: 5 Signs of a Bad AC Compressor Clutch (& Replacement Cost). Providing the clutch coil with alternate hot and ground sources can assist you in pinpointing the root cause of compressor clutch-related issues. Bypass the 3 wire AC pressure switch through B1 to B4. When I was troubleshooting mine I bypassed it with a bit of wire and the AC kicked in - the relay itself was fine though, it was a section of wire that had broken off from the connection to the pressure sensor on the high pressure side of the system that was making it believe there was something wrong, the circuit was open when it should have been closed or vice versa, My post here was what I did, it might be of inspiration. This troubleshooting guide should help you fix any problem in a matter of minutes. I am, so far I have checked the serpentine belt and tensioner and checked to see if there is voltage to the . Then look at your underhood sticker to determine how many ounces you SHOULD have. Something else is the problem. After inspecting the belt, there can only be two things left that could be happening: 1. I would be curious about the system static pressures. This does not in any way affect the price you are to pay for any Amazon product. Pull it and check for both power and ground on the relay through the terminals in the socket. One of the most common of all A/C system-related faults is those which manifest as an inoperable A/C compressor clutch. Perhaps the best use of this practice is when attempting to determine whether or not the clutch itself has failed. May you find this article as helpful as we hoped it to be. Only 20 left in stock - order soon. With the clutch plate worn out, the clutch may not be able to engage. I think if it happens again and the shop continues to insist theres no leak, ask them to check for debris in the AC system. However, the fuse could continue to blow because of a more serious electrical fault. Tiny bits of metal can clog your AC condenser. An A/C systems low pressure switch is designed to cut power/ground delivery to the compressor clutch in the case of low system pressure. If there is no power in the fuse or relay then the main wiring must be checked. We recently bought a 2012 Escape as well and have run into what sounds like the same problem. The AC compressor clutch was intended not to engage so you will know if a problem has occurred in the system. Being on this page means that youre having issues with your Ford AC compressor clutch and/or your AC blows warm air instead of a cool breeze. However, most car AC systems now use an electromagnetic clutch piece that engages the compressor to spin the air conditioning unit. Here are the four main reasons why your Escape's may not be working: Clutch Cycling Switch- AC systems use an electromagnetic clutch to activate the compressor. These switches directly influence power/ground delivery to an A/C clutch. Over time, you may notice your A/C not performing as it should. Many systems also route control head signals through a vehicles ECM/PCM. Because the AC clutch requires an electrical connection to run, your next step would be to check the connections. It may be because the vents are covered with frost. Last summer, the A/C on our 2012 Ford Escape stopped blowing cold air. Itll often be located by electric fans. 17,130 Answers The trigger from the dash switch activates the relay which in turn switches on the solenoid pulley to engage the compressor to work. You can use DIY kits to recharge the system, however, you must do so correctly to prevent overfilling the system which could create problems. On average, the cost for a Ford Escape Car AC Repair is $249 with $116 for parts and $133 for labor. Started December 2, 2020, By AllIcouldAf-ford Know The Difference Between A Bad Alternator And A Bad Battery, The Best Car Window Tints for A Sleek Ride, 2-Way Vs. 3-Way Car Speakers: A Comparative Guide, Steel Seal Blown Head Gasket Fix Repair Sealer 6 Cylinder Review, K-Seal ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair Review, BlueDevil Head Gasket Sealer 32 ounce (38386) Review, Bars Leak HG-1 HEAD SEAL Blown Head Gasket Repair (Review), ATP AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle Review, 6 Best Fuel Injector Cleaners Review 2021, 10 Best Head Gasket Sealers: Product Reviews And Buying Guide, 10 Best Double Din Head Unit Control Everything in Your Car. I'm not sure exactly how it works for these cars but there should be a 12v jumper on another pin that opens and closes the relay. Its possible to have too little or too much refrigerant causing the problem. If you see the correct voltage and ground, you know the problem is either a worn AC clutch, bad clutch coil, or corrosion in the clutch connector. It should be replaced if not functioning properly. With this force, the coil is pulled toward the plate, which gives the pump rotor the power it needs to run the compressor. Need the manual, really. This is called diagnosing and fixing the problem. Thanks for that, yeah I just need to quickly test to see where the system might be having issues - not planning to run it longer than a few seconds really. You could hear a hissing sound if it is not working correctly. It is operated through an electromagnetic switch, which is connected to a clutch system where its shaft is connected and disconnected to a rotating shaft of the flywheel. Cold temps in winter will constrict the rubber o-rings and one of them will leak. Definitely dye should be added so that any leaks can be found. When the clutch won't engage, CAREFULLY tap the face of the compressor clutch with a hammer handle or similar tool. If the clutch kicks on at first I doubt it is that. Check the clutch plate for signs of rust. You cannot paste images directly. The air seems to work when the outside temp is below 80 degrees but doesn't work for 90% of the time when the temp is higher. Mondeo Mk5, Fiesta TDCI 1.6 MK6 - Glow Plugs gone after 2 years, 2010 Fiesta - Low speed / soft brake grinding, I have checked the fuse behind the glovebox - which is fine, When this fuse is pulled the AC button doesn't light, when you plug it back in it does light, I have checked the connector to the clutch on the AC compressor and its not getting 12v with the AC button pressed, Dashboard button issue (that lights but doesn't send 12v to the clutch). If this doesnt start the clutch, the clutch needs to be replaced. They did an evacuation and recharge of the system. Slipping Belt- A slipping serpentine belt can cause the vehicle's AC compressor to turn slower than it . Let it bleed until it reaches the right level of pressure. Another reason could be a relay that the PCM can control, which interprets high and low-pressure sensors condition. 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