To check the fuse, you must first locate the appropriate one for the system. Failure of any type within this unit can prevent a clutchs coil from being energized. Started 12 hours ago, By If it is not freely moving, then its a pretty strong indication that the compressor is locked up and needs replacing. That activity is pre-programmed into the PCM so it's done regardless of the settings of the HVAC system. The clutch compressor is enabled through the engine that is directly attached to the compressors pump rotor using a belt. . If they are not having to add any refrigerant, or are doing so only because they dont have a clue what is wrong, it sounds like they are not diagnosing the problem and Id also say take your car elsewhere. With time, a compressors clutch assembly can begin to show its age. But if the AC system is too low with refrigerant that it cant engage the compressor clutch, then a DIY kit may not be enough to recharge it. Therefore, a lack of compressor clutch operation can often be traced back to a low refrigerant charge. Above that, it only blows out hot air. Check the front of the compressor clutch. Sounds to me like you have a leak somewhere. The A/C compressor pressurizes the refrigerant in your air conditioning system. #2. Mechanic's Assistant: Are you fixing your Escape yourself? If you haven't bought one, don't. Charge the oil (unless the compressor cam precharged), press it to about 200 psig with preferably nitrogen and soap bubble check everything. In modern cars, you can sometimes use an OBD2 scanner to diagnose the AC system, and in this case, you can see the pressure that these sensors measure with the diagnostic tool. Refrigerant pressure is OK, but no cooling? If there isn't enough refrigerant, the clutch may not engage. Started 14 hours ago, By My Explorer did this in 92/93/94one 60 cent oring and its been good since. Has it been verified there are no leaks at the service port fittings? This saves additional load from being placed upon a vehicles engine and prevents excessive internal compressor wear. Obviously, youd want to do this with the vehicle off. 225 PSI / 80 PSI = It is likely that the . Add oil if the level is below the normal point. That's the only way to tell what's really going on. Magnus is the owner and main author of Mechanicbase. srpocd25 To determine if the problem is the AC clutch not engaging, start examining if your compressor clutch is working. Started Sunday at 04:53 PM, By I attempted to add a little bit anyways (not much) to see if the clutch would kick on but no luck. This necessitates compressor replacement, by fully eliminating the possibility of clutch renewal. No problems since then (two years ago). You could hear a hissing sound if it is not working correctly. If it did, there could be massive amounts of damage to the expensive AC parts. From Heat To Cool. Get back to us with the before and after evacuation/recharge refrigerant weights. Murray Compressor - New - 58035. the heat will not shut off and airconditioner wont engage when control knob moved from heat to cool. Who doesnt love road trips? In some cars, the compressor clutch relay goes on and off and is grounded by a computer in a controller system. After inspecting the belt, there can only be two things left that could be happening: 1. Here's my recommendation: Do the assembly work, if you bought the vacuum pump, use it in helping you determine if it's a tight system. Stephen Interior Leave a comment 7,609 Views. The AC compressor clutch was intended not to engage so you will know if a problem has occurred in the system. Now they are saying they have found new leaks in the condenser and want to charge us more. This action will help your compressor maintain its good workings. Another possible cause could be leaks in the AC system. Key on, engine off, test for 2 powers at the relay cavity. The Best Torque Wrench Digital or Dial Type? 30 Answers 155 citrano2012 answered 8 years ago That is not normal, you may need to get the A/C looked at by an authorized dealer. They should put in a UV dye so that when it finally happens again , theyll see the leaking area. That happened last Fall, so we waited until this spring to try again. Remove the electrical connector from the dryer/receiver and jumper the two connections inside the wiring harness side of the connector together: this allows the compressor to engage in spite of low pressure/no gas in the system. . The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. Over time, you may notice your A/C not performing as it should. 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. If you notice rust on the clutch plate, it is an indicator that the compressor is old and would need to be replaced. Its important to take this issue seriously because an AC compressor failure is almost always related to the engine. Castrol Edge vs. Mobil 1 Oil: Differences & Which Is Better? On the other hand, if it is turning freely, we need to determine why its not activating. The most noteworthy of these switches include low pressure switches, high pressure switches, and evaporator temperature sensors. Mechanic's Assistant: Have you checked the Freon level? Just working out why my AC unit isn't working, I very rarely use the AC but do turn it on every now and then to keep things circulating around, when I bought the car about a year ago the aircon was ice cold. To manually engage your AC compressor clutch, you must send +12v power on the cable to the AC clutch. Thats where you will get the problem resolved. My 2011 Ford Escape has been in the auto repair shop 4 times without being able to pinpoint the problem. If the fuse isnt blown, you need to move on to one of the other possible fixes. of r134a. If there is a ground wire, you should also check the ground. This could cost a lot to replace but If you find that it is leaking then you should have it fixed or replaced. Jiffy Lube Vs. Valvoline Oil Change: Differences & Which Is Better. Started August 26, 2012, By No, if the Freon level is too low, it will not engage the AC clutch. This means you would have to spend to get a new compressor, however, it will save you time and money. This car AC element helps blow the air to cool it down. In other words, the system is low on refrigerant. Inspect the harness to make sure that it doesnt have any opens or shorts. If the AC system is low on the coolant, there is a high chance that it could cause the AC compressor clutch not to engage. All Rights Reserved. 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. Dec 25, 2006. The two most vital parts of a cars AC system is the compressor and the clutch. We are a team of ASE certified mechanics 2012 Ford Escape 3.0 last week my AC went out! Unfortunately, A/C related issues of varying severity can, and do, occur on occasion. Plenty enough to get it to engage. Remove the AC connector, check a wiring diagram, and pull a fused wire from the battery to the connector. I will go back to my mechanic and ask if they had to add refrigerant and how much they recovered when they evacuated the system. 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 Indeed they do, if the pressure is too high or too low it won't activate I believe. And another thing i notice is,when i driven the compressor works very well but when i stop the car in a red light or something like that the compressor die but when i hit de the gas works again. Next, they will evacuate the system according to Ford's recommendations. My 2011 Ford Escape has been in the auto repair shop 4 times without being able to pinpoint the problem. Prices may vary depending on your location. Do you have 12V out of the pressure switch on the red/yellow wire? However, this is seldom the case today. The best solution here is to replace the entire unit if you notice that the compressor is bad. When the weather is hot, you want to know that your car AC is going to work the way it should. Pasted as rich text. To check these, you can often measure them with a multimeter. There are three reasons why the compressor clutch does not engage, especially if the sensor detects them. If the air conditioning isnt working, the problem could be the AC clutch. Only 20 left in stock - order soon. They did an evacuation and recharge of the system. It can be triggered by a relay that is directly energized by conditioned high and low-pressure switches. 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? Make sure that the clutch and the pulley is spinning simultaneously. This should solve the AC compressor problem, but you should continue the inspection in case, there are other issues that would cause problems later on. One comes from the power relay and one from the fuse. Also, a ground connection to the AC clutch relays control coil side is provided by the PCM. 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. Started 14 hours ago, By They checked the levels and the pressure was good before they did anything else. If it is not working properly, consider replacing it with a new one. During the intense summer heat, few vehicle features are as beloved by the average motorist as air conditioning. The Ac Works Ok After A Little While On, But Not Like It Use To. If it does not, the compressor is not responding and will need to be replaced. This gives power to the pump rotor that keeps the compressor running. But this is just a symptom. By How to check whether your AC clutch is working, Common reasons why the AC clutch doesnt engage, What you can do if your AC clutch wont engage. 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. On the firewall is the A/C accumulator with the low pressure cutout switch. That is RIDICULOUS, Cheryl. They repeated the same evacuation/recharge process again and the A/C started working again. Started December 2, 2020, By January 2022 Jason, MAZDA6 shuts down while driving fuel pump not monitored, may be no engine light etc. This action will cause the fuse to blow. Check if this fits your 2012 Ford Escape. 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 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. However, the fuse could continue to blow because of a more serious electrical fault. You can do this in under 2 minutes with a test light. Previously the air didn't work when set at level 2 and 3 of the four levels. If the clutch kicks on at first I doubt it is that. Click Here for the 5 best options. 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. How to Fix A Hard Shifting Automatic Transmission: Tips And Tricks From The Pros. This is a full explanation of how the system works. There are many reasons why an AC clutch does not engage. If thats the case, jump to this article: Ford Escape AC Not Blowing Cold. 85ltdcrownvic. Also, its important that you replace the fuse with the appropriate amperage. The easiest way to diagnose a problem with the AC clutch is to measure the voltage sent to the clutch coil. As a result, no rotational force is applied to the A/C compressor's driveshaft. The following steps will assist you in manually engaging your A/C compressors clutch assembly using the jump method. Thanks for that, I will look into it a bit further, might find that it just needs regassing - need to find where the fill ports are! Related: Symptoms of a Bad Car A/C Condenser. Can It Just Be Low On Hi Pull it and check for both power and ground on the relay through the terminals in the socket. Slipping Belt- A slipping serpentine belt can cause the vehicle's AC compressor to turn slower than it . In the on or engaged position, an A/C compressors clutch transmits 100 percent of the rotation force applied by an engines serpentine belt, directly to the compressors driveshaft. This article covers both causes and fixes for this issue. 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. . If you have no power then it will not engage the compressor. 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. If there is no voltage, continue troubleshooting. This indicates some form of wiring problem. You cannot paste images directly. Some 2015-2018 F-150 and 2017-2018 F-Super Duty vehicles may exhibit a lack of cooling from the heating ventilation air conditioning (HVAC) system due to a low refrigerant charge. The best solution here is to measure the voltage sent to the pump rotor using a belt down... Low, it will not shut off and airconditioner wont engage when control knob moved from to... According to Ford & # x27 ; t work when set at level 2 and 3 the! To one of the other hand, if it did, there be! The jump method and is grounded by a computer in a UV dye so that when it finally happens,! Explanation of how the system Works if your compressor clutch is working article both. The HVAC system occur on occasion are three reasons why the compressor is not working properly, replacing. Wiring diagram, and pull a fused wire from the battery to the pump. 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