It also gives an insight into how the system works. If you hear a thunk or clunk noise after turning the AC on, the compressor is engaging. Turn the AC to high while looking at the serpentine belt for any issues. 97 it's a, I have a 2007 h3 hummer base model. Unfortunately, A/C related issues of varying severity can, and do, occur on occasion. 5 Signs Your Cars AC is Low on Freon (& What to do), 4 Symptoms of a Bad AC Pressure Switch (High or Low), 5 Signs of a Bad AC Compressor Clutch (& Replacement Cost), Car AC Not Blowing Cold Air? Hey everyone! It is possible that on this car, the clutch fuse is the one in the PJB (glovebox fuse box). Components used in the Ford Escape AC system Cylinder head temperature sensor Engine coolant temperature sensor Evaporator temperature sensor Low pressure AC cycling switch Dual function high pressure switch Also, a ground connection to the AC clutch relays control coil side is provided by the PCM. Powered by Invision Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car forum / club for owners of Ford vehicles. I am thinking that the puff of vapor is the result of hot gas warming the evaportor and driving off condensed moisture i.e. If the clutch does engage manually, you are looking at some rarer issues. Diagnosing the problem with your AC compressor clutch is not a complicated thing to do. How to Manually Move A Power Seat: A Step-By-Step Guide. On most designs there is a place where debris, if there is any, tends to accumulate. Normally it's just a regas. When the two are separated, pull the switch off the connection and attach the new switch. It seems pretty predictable that a recharge/evacuation resolves the problem short term. In many cases, an A/C clutch will begin to slip, as the face of its clutch plate begins to wear. However, if the clutch does not connect with the compressor, the compressor will not work and the air conditioning system will fail to cool the car. sambooka I bought a recharge can which indicated that pressure was not the problem, rather something else. Pulley: If the compressor pulley bearings are failing, they can make noises, generally a grinding, roaring or squealing noise. You can also examine this for noise and smell issues. You may also notice a bad smell when you turn on both heat and AC. Yes, the fan work perfect, there is NOT overheat from the engine, is just the compressor that worksr for a few second then stop and start againg and then stop and so on You can post now and register later. We recommend starting with the power wire to the AC clutch. The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. When the A/C is activated, the A/C compressor clutch locks to provide power to the compressor. This problem occurs most often on older models or ones that have used the AC system excessively. Ford Escape. If it has blown, your only option is to replace it. . The Compressor Is Cycling More Often Than I Recall. It can be triggered by a relay that is directly energized by conditioned high and low-pressure switches. [/QUOTE A/C has around 97 psi on high and low with ac max compressor not engaged. If there is a ground wire, you should also check the ground. Compressors are expensive. . With the engine on, you can fully diagnose the problem. See Also: 8 Reasons Your A/C Is Not Blowing Cold Air. Then look at your underhood sticker to determine how many ounces you SHOULD have. From Heat To Cool. If this happens, it is better to replace it with new ones because it would impossible to take out the metal bits that have clogged the condenser. If the pulley is the only part spinning, it means that the clutch is damaged, and the AC will not work properly. Consequently, the vents may be giving off heat. Inspect the harness to make sure that it doesnt have any opens or shorts. Modern automotive A/C systems rely upon the use of several switches to operate efficiently. One of the most common of all A/C system-related faults is those which manifest as an inoperable A/C compressor clutch. This article intends to give few techniques on how to troubleshoot AC clutch problems. If the level drops below the red line, it means that the gas oil is insufficient and needs to be supplemented. You can try disconnecting the low pressure switch and bridging the connector , run engine briefly with air con on and see if compressor engages. My Explorer did this in 92/93/94one 60 cent oring and its been good since. Do you have 12V out of the pressure switch on the red/yellow wire? From you description, it sounds as though the system isn't building enough pressure, and by relation enough heat to turn the cooling fans on. Use special gauges to determine if the system has too little or too much refrigerant. If the compressor clutch cycles on and off rapidly, then the system is most likely low. Because of this, partial failure of a control module can also lead to compressor clutch in operation. RELATED: 5 Signs of a Bad AC Compressor Clutch (& Replacement Cost). 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. We took it to our mechanic (who I trust). Turning on the AC automatically turns on the radiator fans, hot or not hot. To check the fuse, you must first locate the appropriate one for the system. Leighton198 Automatic gearbox jammed in PARK, easy to permanently fix free, MK4 St-Line Estate 1.0 125bhp economy & performance, My 2013 Ford Fiesta 1.6 Diesel is making a whining noise after the car is turned off, Speed limited engine malfunction with CAN fault codes, Touch up repairs - clues/recommendations/tips, Car starting too quickly on cold mornings? However, modern car models use a variable AC compressor and these systems are meant to work all the time when the engine is running. A/C only blows cold air below 78 degrees or so. Ships from and sold by Parts Geek LLC. They should put in a UV dye so that when it finally happens again , theyll see the leaking area. The two wires inside the low pressure cutout switch wiring connector get jumpered together. Cold air started blowing again! . This helps to filter and store the liquid refrigerant when it begins to turn back into a gas. On average, the cost for a Ford Escape Car AC Repair is $249 with $116 for parts and $133 for labor. Ihave Been Hearing Metalick Clicking Sound From Tensioner Since I Bought My Car When It Was 70000 Mikles. Its possible to have too little or too much refrigerant causing the problem. It is also important to consider the fact that A/C clutch replacement requires the use of specialty tools, and is typically far more involved than the complete replacement of an A/C systems compressor. They did the evacuation/recharge and the air is now blowing cold again. Your link has been automatically embedded. What are the reasons why your AC clutch is not engaging, and how can you fix it? The bypass you tried relies on the fuse listed to have power to the relay. Refrigerant pressure is OK, but no cooling? Any ideas why its not lasting? Started August 12, 2021, By The pulley should be turning and then the compressor clutch should engage. If theres a problem with any of them, the clutch could fail to work. You should check this area for bad noises and bad smells. No problems since then (two years ago). The material or media contained in these forums are submitted by the general public and is NOT endorsed by Ford or Ford Motor Company in any way. There is only 1 fuse for the AC that I can find which is in the glovebox - the fuse is fine and if you pull the fuse the switch doesn't light up. This is usually the most common problem with car AC systems, so its always wise to start here. The same applies if the freon pressure is too high. Your AC system may read an abnormally high pressure if a refrigerant has overcharged your compressor. If there are metal bits, you need to address that asap b/c if they work their way into the compressor they will ruin it. This is ok as a diagnostic test, but there is a problem if you use it long term: The compressor will be damaged if pressure is too low, as it will not get the oil it needs, which is in the circuit with the refrigerant. Thank you so much for the feedback thus far. Your compressor will tell you if it needs more refrigerant when the pressure gauge on the high-pressure side of it reads a pressure that is lower than what it requires. However, this should not be done unless you are 100% sure of what you are doing, as you can damage expensive parts if you do it wrong. I have a problem with my A/con Ford Fiesta 2013 i think is the Mk7 "mexican version". By The failure of any of these sensors can render an A/C clutch inoperable. Seems to be working. The clutch is not getting a signal to turn on. 4.5 amps, check clutch air gap. Started December 2, 2020, By After inspecting the belt, there can only be two things left that could be happening: 1. If it is not working properly, consider replacing it with a new one. hiace_drifter The power going to the AC compressor relay is going to be fused, so check that fuse while youre at it as well. A/C Stopped Working 2010 Ford Escape This problem may be covered under warranty. If thats the case, jump to this article: Ford Escape AC Not Blowing Cold. I too am thinking I need to take it someplace else for further diagnostic. The most common reasons a Ford Escape ac isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. Mark helpful 55,895 Tracy answered 8 years ago Then 2-3 weeks later, my wife says she saw a puff of smoke come out of the vents (not sure if it was smoke or vapor or what). All Rights Reserved. Click Here for the 5 best options. Symptoms. Need the manual, really. Instead, you might need a new pressure switch, replace a bad fuse or fix an electrical connection. To determine if the problem is the AC clutch not engaging, start examining if your compressor clutch is working. 1861cp Common Causes (& How to Fix), Windshield Wiper Fluid Not Coming Out Causes and Fixes, Car AC Smells Like Vinegar Causes and How to Fix It, 5 Signs Of A Bad AC Compressor Clutch and Replacement Cost, 9 Reasons Your Clutch Pedal Is Stiff And How To Fix it, Manual Transmission Hard to Shift? You could get a digital multimeter and check the voltage and then check the ground at the removed connector. Many modern-day cars are built with AC clutches that turn on and off using high and low-pressure switches and compressor oil levels through the fuse. But, I have no reason to think it will last. If this situation occurs, you will need to empty the system to have all the air removed before it can be recharged. Any bad connection, frayed wiring, or oily contact points should be noted. This means you would have to spend to get a new compressor, however, it will save you time and money. The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. That is the part that should be turning freely if the compressor is not engaged (see diagram above). In fact, many of todays A/C clutches are no longer independently serviceable. The AC pressure switches control this, and if the pressure is too low or too high, it will not send power to the AC clutch. You would rather have the fuse blow than too much voltage make it through the system. When you turn on the air conditioning, you expect to feel cold air pour out. The evaporator coil is found inside your cars cabin. Also, its important that you replace the fuse with the appropriate amperage. 5 Best Fire Extinguisher For Cars Be Ready For Fire Emergencies. My Explorer did this in 92/93/94one 60 cent oring and its been good since AC system may read an high. 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