Your shop should know where that spot it for your cars AC design. Antonsd Instead, you might need a new pressure switch, replace a bad fuse or fix an electrical connection. . that have created this guide for you so you can understand how the system works We use cookies to ensure that we give you the best experience on our website. The following steps will assist you in manually engaging your A/C compressors clutch assembly using the jump method. The last thing you want to deal with is a hot car cabin. No, old AC compressors with a clutch should not spin all the time. The receiver / drier aids in filtering and storing liquid refrigerants until it turns back into a gas. This article covers both causes and fixes for this issue. If you notice that the belt is slipping then you would have to adjust it. In some cases, the wiring may be fine but the harness is the problem. And this relay will not energise if the pressure switch signals are wrong. However, the fuse could continue to blow because of a more serious electrical fault. Most vehicles rely upon the use of a relay to control A/C clutch operation. Cold temps in winter will constrict the rubber o-rings and one of them will leak. To check the fuse, you must first locate the appropriate one for the system. In order for the AC Condensor to do its job it must stay as cool as it can. You should check this area for bad noises and bad smells. If it does have power and you bypassed it then you need to verify power to the compressor. In this guide, we cover the different problems you might encounter. Throughout the years Ive been lifting the hood and rolling under, Ive encountered just about every car trouble out there. Escape A/C Recharge. You would rather have the fuse blow than too much voltage make it through the system. Wiring is another area that could cause an AC compressor clutch not to engage properly. The official Ford website can be found at http://www.ford.co.uk/. They checked the levels and the pressure was good before they did anything else. Normally it's just a regas. The most common reason why your AC clutch is not engaging is that the AC refrigerant level is too low or too high. Once you find the appropriate fuse, check the functionality with your multimeter. This indicates some form of wiring problem. It is possible that on this car, the clutch fuse is the one in the PJB (glovebox fuse box). Do you have 12V out of the pressure switch on the red/yellow wire? Last summer, the A/C on our 2012 Ford Escape stopped blowing cold air. Mechanic's Assistant: Have you checked the Freon level? Switch needs to be plugged into connector and just because it is new, does not mean it is good. We took it to our mechanic (who I trust). However, this is seldom the case today. Ask your Ford dealer. Step three is not that complicated but it is delicate. PRICE: 84.99. If the pulley and the clutch are both spinning it shows that the clutch is engaged with the pulley correctly. $285.95. Something is telling it no to kick on. Plenty enough to get it to engage. Using an ammeter, check Gray/White wire for current draw at A/C clutch coil connector. With a DIY repair kit, you can recharge the system to the right levels. That is why the pressure switch is there. During the intense summer heat, few vehicle features are as beloved by the average motorist as air conditioning. The most common problem for that symptom is the fan relay burns out, and the A/C comes on strong but then overheats quickly making the pressure in the condenser get too high and the pressure cycling switch automatically turns off the A/C. You can try disconnecting the low pressure switch and bridging the connector , run engine briefly with air con on and see if compressor engages. The bypass you tried relies on the fuse listed to have power to the relay. These include low or excess refrigerant and insufficient oil. Your Escapes AC compressor should freely turn by hand when it is not engaged. -or-. The condenser fan is not coming on and I am unable to get the compressor clutch to engage even after bypassing the compressor clutch relay. 1861cp It can be triggered by a relay that is directly energized by conditioned high and low-pressure switches. Started Sunday at 04:53 PM, By If there is no voltage, continue troubleshooting. So they are saying there is no leak. Then focus on the compressor clutch. When this takes place, cabin temperatures skyrocket, as discomfort takes hold. Performance upgrades, maintenance, modifications and problem solving. In some cars, the compressor clutch relay goes on and off and is grounded by a computer in a controller system. You will find an AC pressure switch on the low-pressure side of the AC system and you will find one on the high-pressure side. There are many ways for AC compressor clutches to receive power. Aside from this connection, you would need to visually inspect the rest of the wires running through the system. Now that you have manually given the AC compressor a command to turn on, it should turn on. You could hear a hissing sound if it is not working correctly. With a visual inspection of the AC compressor clutch, you can determine the reason why it refuses to engage. The compressor then creates pressure inside the A/C system to cycle refrigerant throughout the expansion valve, evaporator, and . Ill also update when I get a resolution to the problem. Ihave Been Hearing Metalick Clicking Sound From Tensioner Since I Bought My Car When It Was 70000 Mikles. The Compressor Is Cycling More Often Than I Recall. Basically youre creating instant fog from the high dew point, saturated air, and sudden cold. However, if you notice that is worn, then it would have to be replaced. If you dont get any voltage reading, then check the fuse. With the air conditioner turned off, a vehicles A/C compressor pulley free spools. Low AC pressure will prevent the relay from sending power to the AC compressor clutch. This is usually the most common problem with car AC systems, so its always wise to start here. Stephen Interior Leave a comment 7,609 Views. The #1 Ford Explorer enthusiast resource for over 25 years! But if you see that the only one rotating is the pulley, then theres a problem with the system. The failure of any of these sensors can render an A/C clutch inoperable. Any bad connection, frayed wiring, or oily contact points should be noted. It may even be illegal to do it yourself where you live. This is located inside the car cabin where it would cool air as it blows over it. If you have no power then it will not engage the compressor. If you turn on the AC and immediately hear a rattling noise, there are a few potential causes: Compressor: If your AC compressor is beginning to fail, it can make a rattling noise. See Also: 8 Reasons Your A/C Is Not Blowing Cold Air. The Ac Works Ok After A Little While On, But Not Like It Use To. Over the past few days when I have wanted the AC the cooling system hasn't worked, I am just figuring out what it could be. Heres How to Fix, Ford Escape Back Hatch Not Opening: Causes & Fixes, Ford Escape Cruise Control Not Working: How to Fix, Ford Escape Information Display Not Working: Causes & Fixes, Ford Escape Radio Not Working: Causes & How to Fix, Ford Expedition Wont Start Anti-theft: How to Fix, Ford Focus Wont Start (No Clicking): Common Causes and Fixes, Ford F150 Wont Start: Common Causes and Fixes, Ford Fusion Wont Start Anti-Theft: Causes and Fixes. Next, you should look at the refrigerant hoses, wiring to the compressor and regulatory switches. Fill it up until the pressure indicator on the refill . Or, it may be turned by an independent belt. 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. 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. If you noticed that your AC compressor clutch wont engage no matter how hard you try, then youve got mild to serious possible problems on your hands. Need the manual, really. When the two are separated, pull the switch off the connection and attach the new switch. Its meant to engage and disengage the compressor pulley from the drive. I think the puff of smoke coming out of the vents is unrelated. Use a wiring diagram to ensure you have the right wire. You may check your ACs user manual for specifications. First, turn ON the AC and fan to the maximum. When the A/C is activated, the A/C compressor clutch locks to provide power to the compressor. Mechanic's Assistant: What year is your Escape? 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. Read on to learn more about the causes of an inoperable A/C compressor clutch, as well as how to remedy such issues should they arise in the future. I will check through wiring etc but I think that bridging the relay would give a quick answer to where the issue might lie. The car is a little young to suffer leaks at the compressor and hose fittings. Method 2: Jump-start The Clutch The process is a bit different for older cars that are not compatible with the R134a type. There are three reasons why the compressor clutch does not engage, especially if the sensor detects them. If they have to add ANY freon, then theres a leak, they just havent found it. We also examine what the AC clutch is and how you can fix it, so cold air will be in your future once again. July 21, 2016 in Ford Fiesta Club. Your last post confused me. If the clutch does engage manually, you are looking at some rarer issues. 2012 ford fusion evaporator temperature sensor bypass. Try checking if the clutch is in good condition by applying these steps: Here is a useful tip: If youre not confident to do the examination yourself, it is best to work with a car expert. That is why the pressure switch is there. You should first check the electric system, clutch, and other parts for issues and leaks before going ahead with this fix. Solved A/C compressor clutch not engaging . If you hear a thunk or clunk noise after turning the AC on, the compressor is engaging. Started 13 hours ago, By Start the engine, and then see if the clutch and the pulley are running. 4.5 amps, check clutch air gap. This helps the refrigerant to turn into a gas. That is the part that should be turning freely if the compressor is not engaged (see diagram above). Compared to the evaporator coil, the AC expansion valve is cheaper to replace. Started 12 hours ago, By You could get a digital multimeter and check the voltage and then check the ground at the removed connector. Ac compressor clutch does not mean it is delicate include low or too high bad connection, wiring... Can determine the reason why your AC clutch is engaged with the pulley are running car trouble there! At 04:53 PM, by if there is no voltage, continue troubleshooting you find appropriate. 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