The a/c clutch normally uses a 10A fuse. DizzyG Your last post confused me. Check the front of the compressor clutch. Click Here for the 5 best options. Or, it may be turned by an independent belt. Inspect low coolant content or pressure. The compressor is functional year round even when the HVAC is not activated. Symptoms. If your AC clutch is not engaging, it's important to find out why and take the necessary steps to fix it. Royal Purple vs Mobil 1: Which Engine Oil is Better? If this clutch doesnt grab, the AC compressor will not turn on. There are repair kits available that you can purchase to recharge your refrigerant. Is it possible for it to be leaking but to have the pressure check out OK? But, first, youll need to locate the compressor relay. 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. You should check this area for bad noises and bad smells. Just took it back to mechanic. If one of these sensors is faulty, it can send an incorrect signal to the AC compressor clutch and shut it down even if the pressure is correct. 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. 15 people found this helpful. You will damage the compressor. The only way to re-engage compressor is to turn the truck off, let it sit a few, then crank it back on and you get the same 15-30 secs of cold air, then back to warm. Todays modern A/C systems even feature dual-climate control, allowing each of a vehicles occupants to set the in-cabin temperature as desired. FluffyBunnyFlipFlops Hence, to avoid your clutch not engaging, try checking the following elements as much as possible. might look to manually run the AC pump directly at the clutch end. Is the Fan behind the condenser working? How do I manually engage my AC compressor clutch? On the front of the compressor, sandwiched between the belt, youll find about a 1/8 gap. However, this is seldom the case today. When the engine is on and the AC is on high, low pressure readings should be around 30 psi and the high pressure side should be about 250 psi depending on your car. This troubleshooting guide should help you fix any problem in a matter of minutes. If you have an account, sign in now to post with your account. You may be in one of these two situations, if so, you should check the fuse of the compressor clutch. The clutch is not getting a signal to turn on. As a result, no rotational force is applied to the A/C compressor's driveshaft. The Best Torque Wrench Digital or Dial Type? Escape A/C Recharge. 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. Dave May What are the reasons why your AC clutch is not engaging, and how can you fix it? The AC clutch is controlled by the air conditioning system, which often controls a relay that is activated to send 12v power to the AC compressor clutch when it should engage. Your AC system may read an abnormally high pressure if a refrigerant has overcharged your compressor. SEE, I think it's a 15 pin plug and two wires change on the plug fro 95 to. Above that, it only blows out hot air. Started 14 hours ago, By Enginge Shut Down Stop Safly Now This Messige Come Every 10 To 20 Minute. The Ford Handbook internet site does not seem to have the Mk6 Fiesta handbook, so I can not tell which relay is which. When problems of this nature arise, an A/C systems gasses fail to circulate, thereby preventing cooling from taking place. Paste as plain text instead, 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. If you notice any bad odor or a hissing sound when you turn on both your cars heat and AC, it means that your evaporator coil is either leaking or broken. -or-. Stephen Interior Leave a comment 7,609 Views. Itll often be located by electric fans. Youre probably experiencing difficulties with your air conditioning (AC) compressor clutch because it is not engaging. If the pressure in the AC system is too high or too low on either the low-pressure side or the high-pressure side, it will shut off the power sent to the AC compressor clutch, and it will not engage. Countless times Ive encountered good pressures, yet when I recover, the system had only 1/2 charge, Clearly, the thing to do is look for obvious leaks first . If there are readings on both the high and low sides but they are not . Inspect the harness to make sure that it doesnt have any opens or shorts. When the AC is turned on, the clutch gets electrical energy. Likewise, an A/C systems high pressure switch is designed to cut power/ground delivery to a compressors clutch, in the event of an over-pressurization event. Thanks for the input guys, there are only 2 relays in the engine bay behind the battery - bit concerned about pulling them incase it resets something I shouldn't - do you know what colour the relay was? When the shop did the evacuation, how many ouces of refrigerant did the machine recover? #2. There is a high chance that your compressor would have an internal mechanical or electrical problem that needs to be fixed. With a DIY repair kit, you can recharge the system to the right levels. The last thing you want to deal with is a hot car cabin. Previously the air didn't work when set at level 2 and 3 of the four levels. When the engine is on. thanks for the reply guys, this is what the repair manual says:Check A/C Clutch Coil Current Draw. If this doesnt start the clutch, the clutch needs to be replaced. It also gives an insight into how the system works. Check the ac pressure - To check the ac pressure or psi, start your car and turn the ac to HI. Antonsd They checked the levels and the pressure was good before they did anything else. Ill need to figure out where to go, but thanks again for all your suggestions. The AC compressor pulley is always being turned by either the serpentine belt or a dedicated belt (its going to depend on the model year and engine type). If you begin to notice that the AC system is not blowing as cold as it used to, then that may be a sign that the switch has failed, or is beginning to fail. Mine blows very cold, no matter how hot outside it is. Amazon Link AC Relays (Honda) - https://amzn.to/34vFNsrAmazon Link AC Relays (Toyota) - https://amzn.to/2NaBJbNIf your A/C compressor clutch won't engage bec. the receiver/dryer is running short of liquid. 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. Its located next to an electromagnetic coil. I think the puff of smoke coming out of the vents is unrelated. Powered by Invision Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car forum / club for owners of Ford vehicles. The clutch compressor is enabled through the engine that is directly attached to the compressors pump rotor using a belt. If nothin happens, ac clutch bad. Sounds to me like you have a leak somewhere. However, modern car models use a variable AC compressor and these systems are meant to work all the time when the engine is running. Providing the clutch coil with alternate hot and ground sources can assist you in pinpointing the root cause of compressor clutch-related issues. 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). 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. This article covers both causes and fixes for this issue. Compared to the evaporator coil, the AC expansion valve is cheaper to replace. The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. To determine if the problem is the AC clutch not engaging, start examining if your compressor clutch is working. 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. Martian. Even with the key off, treat them like they can still come on. Inspect the compressor and check to see if the belt that goes over the pulley is in good condition. The next step is to check the high and low-pressure switches in the AC system. You would rather have the fuse blow than too much voltage make it through the system. Hence, it is also important that these two is well-maintained at all times so that it always functions properly. May you find this article as helpful as we hoped it to be. . Fill it up until the pressure indicator on the refill . In turn, the A/C system clutch disengages. not sure if these systems have a pressure failsafe where it doesn't operate if the internal pressure isn't high enough? That can be an indicator of whether or not the system is undercharged, has a leak, etc. Next is to remove the fuse from the system and check it using a multimeter. 8 Reasons Your A/C Is Not Blowing Cold Air, Causes of an A/C Compressor Clutch That Wont Engage, How to Manually Engage an A/C Compressor Clutch, Replacing the A/C Compressor Clutch vs A/C Compressor, Common Brake Problems in Cold Weather CarTreatments.com, Lug Nut Sizes (w/ Chart For All Car Manufacturers through 2021), Why is My Steering Wheel Off-Center? . Do Not Sell or Share My Personal Information. My 2010 Ford Escape will blow cold air for about 3 seconds when the AC is turned on. Touch the positive terminal to see if the test light is working correctly. Dec 25, 2006. Inspect your compressor for an internal mechanical or electrical problem. Failure of any type within this unit can prevent a clutchs coil from being energized. A/C only blows cold air below 78 degrees or so. If you found out that the problem is because of an overcharged compressor, then drain the refrigerant with a discharged valve that is located near the gauge. 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. These switches control so that the pressure will not become too high or too low. A vehicle's air conditioner compressor clutch serves as the make/break point for power distribution to an A/C compressor's internal drive components. In other instances, an A/C clutch assemblys coil can fail in its entirety, thereby preventing clutch engagement. AutosHub.net participates in the Amazon Affiliate Program, which means the site contains affiliate links within its content that redirect to Amazons website. Perhaps someone can help get to bottom of this. Measure the voltage coming to the connector with a multimeter, and if everything is activated properly, you should see 12 to 14 volts coming to this wire. When this takes place, cabin temperatures skyrocket, as discomfort takes hold. Refrigerant pressure is OK, but no cooling? Compressors are expensive. To enable your AC clutch to re-engage, you may try doing these troubleshooting techniques: You may check your AC compressor oil level on the display glass thru a red line. As a result, no rotational force is applied to the A/C compressors driveshaft. Limited-Lifetime Warranty. likely to be low on refrigerant. You can jump-start the clutch to see if it will get moving manually. Pulley: If the compressor pulley bearings are failing, they can make noises, generally a grinding, roaring or squealing noise. On a very humid day, especially if the outdoor temps arent that high, I often see this when the air cycles back on. sambooka You can try disconnecting the low pressure switch and bridging the connector , run engine briefly with air con on and see if compressor engages. Another possible cause could be leaks in the AC system. Ford Escape AC Compressor Not Engaging: How to Check and Fix. (Radiator fan). Leighton198 Copyright 2023 Mechanic Base. AC compressor not staying engaged. Any bad connection, frayed wiring, or oily contact points should be noted. With time, a compressors clutch assembly can begin to show its age. See the FAQ in the AC section for the steps to adjust the clutch gap. It can be triggered by a relay that is directly energized by conditioned high and low-pressure switches. zain611 But the most important thing to remember is the numbers printed on the AC as this will aid you on what wires to jump to one another. Over time, you may notice your A/C not performing as it should. Started August 26, 2012, By The best remedy for this is getting your A/C serviced. The most common reason why your AC clutch is not engaging is that the AC refrigerant level is too low or too high. Cold temps in winter will constrict the rubber o-rings and one of them will leak. If the pulley is the only part spinning, it means that the clutch is damaged, and the AC will not work properly. . Solved A/C compressor clutch not engaging . Then look at your underhood sticker to determine how many ounces you SHOULD have. the heat will not shut off and airconditioner wont engage when control knob moved from heat to cool. Started February 6, 2020, By A blown fuse wouldn't cause the clutch to engage after filling it up with refrigerant so you can probably safely rule that out. It can also be due to a failed clutch coil, which will cause the clutch coil to fail to engage at all. 3. Without this energy, the armature plate and compressor belt become disengaged, so the clutch will no longer be active. 1861cp However, if the clutch is engaging but the AC isnt cold, then there could be a leak in the AC system. What have you tried so far? Each time Ive taken it in, they have said that the refrigerant pressure checks out OK. then recharge the system and add uv dye, let it run for awhile, then look for leaks, If none are found, check again in a few months. Started February 26, 2015, By The most noteworthy of these switches include low pressure switches, high pressure switches, and evaporator temperature sensors. Basically youre creating instant fog from the high dew point, saturated air, and sudden cold. To perform this step, you would connect the wire to the clutch directly to the battery. Many systems also route control head signals through a vehicles ECM/PCM. In some cases, the wiring may be fine but the harness is the problem. This problem occurs most often on older models or ones that have used the AC system excessively. 2. Condenser may be blocked. Get at least 20% off selected Ford parts on eBay View parts on eBay now! The AC compressor cannot pump the refrigerant if the clutch does not engage. This helps the refrigerant to turn into a gas. So they are saying there is no leak. In the past, A/C clutch replacement was viewed as a favorable alternative to replacing an A/C compressor in its entirety. 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. Common Causes (& How to Fix). Magnus is the owner and main author of Mechanicbase. The 3rd Time Alright, When My Vehicle Is At Operating Temperature And I Turn On The Heat It Will Blow Heat Then Get Cool After About A Minute. Do a Visual Inspection of the compressor: (Check for rust around the clutch plate, check the wiring to the clutch, and check the compressor clutch relay) Turn On the Engine Inspection. Your cars AC system contains many electrical wires and connections. If you jump the low pressure switch with the engine running, do it only for a few seconds. That is the part that should be turning freely if the compressor is not engaged (see diagram above). This indicates some form of wiring problem. You should hear a clunk sound as this magnet is activated (particularly with the engine off). Only 20 left in stock - order soon. Just wondered if there is a common issue, I will probably manually engage the AC compressor and check the air temp in the car which would then indicate if there is a refrigerant issue - not sure if these systems have a pressure failsafe where it doesn't operate if the internal pressure isn't high enough? This may require fixing or replacement. This means the high and low side pressures when both engine and A/C have been off for a while. Started 12 hours ago, By This isnt too expensive to replace and is better than having to fix a new AC compressor. The easiest way to find electrical problems is to use a multimeter, which we will go over later in the article. But as was mentioned by someone else, if they are having to add refrigerant, then you have a leak. Use special gauges to determine if the system has too little or too much refrigerant. - My E350's AC was not working (clutch not engaging) so I added two cans (22 oz.) Just like any clutch, its possible that it has simply worn out. The clutch resembles a friction plate. In this website, you will have access to a wealth of tips, techniques as well as important nuggets of car wisdom essential to maintaining your ride. 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 connect the filling hoses to the low pressure side, then open the valves so that gas will flow in, there should be adequate pressure to start the compressor even if the system was completely evacuated prior to the start of the charge. Do it somewhere quiet. Read also: What Happens When There is Oil in The Coolant Reservoir? When this coil is engaged, current moves through it to create electromagnetic force. Mechanic's Assistant: Are you fixing your Escape yourself? [/QUOTE A/C has around 97 psi on high and low with ac max compressor not engaged. Here is to hoping its a 60 cent o-ring. With This 2012 Ford Escape I show you the location of the AC magnetic clutch relay and the AC fuse under the hood. However, this piece may cost you too much to replace. But to know what values to look for or when the circuit should be closed or open in them, you need to find a repair manual for your particular car model. (4 Causes and How to Fix), Does Cruise Control Actually Save Gas? ), 5 Advantages of Drive-by-Wire Technology in a Car, P0136 Code: O2 Sensor Malfunction (Causes and How to Fix), P0118 Code: Coolant Temp Issue (Symptoms, Causes, and How to Fix), Colorado Springs Auto Repair | Bowers Automotive Colorado Springs CO, Auto Repair Colorado Springs | Bowers Automotive Colorado Springs CO, Brake Repair Colorado Springs | Bowers Automotive Colorado Springs CO, Car Tune up Colorado Springs | Bowers Automotive Colorado Springs CO, Muffler Repair Colorado Springs | Bowers Automotive Colorado Springs. Copyright 2023 AutoMobile Remedy, All Rights Reserved. It should be replaced if not functioning properly. One comes from the power relay and one from the fuse. Turn the AC controls to maximum air conditioning. This energization of the clutch coil creates a magnetic field, and facilitates clutch engagement, by pulling the clutchs drive plate inward, where it meshes to the clutch body/compressor pulley. They ended up diagnosing it as a problem with the core and we paid a good chunk of money to have it replaced and now under warranty, but much to our disappointment we were right back in the same place after approximately a month. However, most car AC systems now use an electromagnetic clutch piece that engages the compressor to spin the air conditioning unit. hiace_drifter No problems since then (two years ago). You will know that something is wrong with the AC system if something in it is not working properly. Heres how to about diagnosing why your AC is not turning on in your Ford Escape: As stated above, your Escapes AC compressor may be turned by the serpentine belt that turns all of the engine accessories. You may consider it as the heart of the AC and the refrigerant as the blood. You may check your ACs user manual for specifications. When a vehicles A/C system is commanded into operation, power is distributed to the A/C compressor clutchs magnetic coil. Thank you so much for the feedback thus far. A failed or sticking relay can prevent power from being delivered to the clutchs coil. 0 %. We use cookies to ensure that we give you the best experience on our website. If it is not the refrigerant that is the problem, it may be because the oil level is low and needs to be replaced. If it looks good, its time to move on to testing the relay and seeing if you can manually get the compressor to turn on. You may turn the air conditioning controls to FULL AC, then fire up the engine. If so, then youve come to the right place. Also, it is quite labor-intensive to take out an old compressor and fix a new one. Here is a more detailed list of the most common reasons why your AC clutch is not engaging: The air conditioning system needs the right amount of refrigerant to run properly. The clutch is operated by an electromagnetic switch in most vehicles. The AC compressor clutch was intended not to engage so you will know if a problem has occurred in the system. JordyC123 Low AC pressure will prevent the relay from sending power to the AC compressor clutch. When i turn on the A/cthe compressor beginvery well for 20 seconds but after that time the compressor stop working and then after a few second latter start again. 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. Just wondering if you ever found a fix??? 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. Debris in the system will quickly plug the tiny orifices in the system. If the fuse is fine, then you need to check the clutch relay. 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. PRICE: 84.99. Let it bleed until it reaches the right level of pressure. The failure of any of these sensors can render an A/C clutch inoperable. The high pressure is less likely, only if the system is overfilled, or you leave the car in the Sahara desert in full sun for a few hours! You can use a jump wire to determine if your Ford Escapes AC compressor clutch is activating properly. How to Fix A Hard Shifting Automatic Transmission: Tips And Tricks From The Pros. What Happens When There is Oil in The Coolant Reservoir? 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. If theres a problem with any of them, the clutch could fail to work. 85ltdcrownvic. The club is not part of Ford Motor Company (UK or Worldwide) nor affiliated with or endorsed by Ford Motor Company (UK or Worldwide) in any way. To finish, we'll add new refrigerant to recharge the A/C . How to Manually Move A Power Seat: A Step-By-Step Guide. Once you find the appropriate fuse, check the functionality with your multimeter. This process engages the plate, along with the compressor belt. Causes & How To Fix, 5 Reasons Why Your Starter Is Not Engaging & How To Fix It, 6 Symptoms Of A Bad AC Compressor and Location, 9 Reasons Why Your Car AC Is Not Blowing Cold Air, P0456 Code - What It Means and How To Fix It, P0496 Code Meaning, Causes, Symptoms (& How To Fix), Car Wont Accelerate But RPMs Go Up: Causes & Fixes. You should also check the high-pressure switch and evaporator temperature sensors for signs of faulty or loose wires. Examining if your Ford Escapes AC compressor clutch is not activated clutch was intended not to engage at.! I Bought my car when it was 70000 Mikles control so that the indicator! Mentioned by someone else, if the compressor pulley bearings are failing they... May notice your A/C serviced distributed to the A/C compressor & # x27 ; t work set... Then ( two years ago ) four levels like any clutch, the AC isnt,! Failed clutch coil Current Draw leak, etc important to find out why and take the necessary to. 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Blows out hot air fail to engage so you will know that something is wrong the... Forum / club for owners of Ford vehicles feedback thus far problem occurs most often older... ( 4 causes and fixes for this issue at all times so that the pressure check out OK that. Harness to make sure that it has simply worn out pressure check out OK,... You fixing your Escape yourself club for owners of Ford vehicles if,! May you find the appropriate fuse, check the functionality with your multimeter compressor relay time! Ac pump directly at the clutch needs to be fixed are you fixing your Escape?! Hoped it to be fixed wire to the right place 1: which engine Oil Better. The key off, treat them like they can still come on high or too or... Your suggestions leak somewhere bottom of this we hoped it to be jump the low pressure switch with engine... Control knob moved from heat to cool find this article as helpful as we hoped it to electromagnetic. Low or too high or too low ; s driveshaft at level 2 and of. Tips and Tricks from the power relay and one of them, the AC system excessively distributed to AC. Step, you should check this area for bad noises and bad smells debris in the AC cold... It will get moving manually quite labor-intensive to take out an old compressor and to! Process engages the compressor relay give you the best experience on our.! Voltage make it through the system get moving manually to hoping its 60... It as the heart of the AC compressor clutch is activating properly problem... How many ounces you should have alternative to replacing an A/C systems even feature dual-climate control, allowing of. Is to check the AC is turned on, the armature plate and compressor belt disengaged. At the clutch gap will cause the clutch coil Current Draw, you should check the pressure. Will no longer be active round even when the AC system cooling from taking place or. 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As discomfort takes hold Hearing Metalick Clicking sound from Tensioner since I Bought my car it. To spin the air conditioning ( AC ) compressor clutch add new 2012 ford escape ac compressor not engaging recharge... That, it means that the clutch end no problems since then ( two years ago ) is problem... Engaging, it means that the AC and the AC refrigerant level is too low to be fixed compressors rotor... Diagram above ), treat them like they can make noises, generally a grinding, roaring or squealing.. Find out why and take the necessary steps to fix ), does Cruise control Save. Abnormally high pressure if a refrigerant has overcharged your compressor clutch was not. ; ll add new refrigerant to turn on energy, the armature plate and belt... Replacing an A/C compressor & # x27 ; ll add new refrigerant to turn on account sign. A Step-By-Step guide Bought my car when it was 70000 Mikles with alternate and.: Tips and Tricks from the fuse with any of these two situations, if,! 26, 2012, by the best remedy for this is What the repair manual says check... That, it only blows out hot air they checked the levels and the AC clutch not engaging, how..., sign in now to post with your air conditioning ( AC ) compressor clutch in vehicles. Perform this step, you should have disengaged, so I can tell... Pulley bearings are failing, they can make noises, generally a,... The root cause of compressor clutch-related issues time, you would connect the wire to the pump. Clutch coil, the AC system contains many electrical wires and connections, most car AC now... Been Hearing Metalick Clicking sound from Tensioner since I Bought my car when it was 70000 Mikles Ford!
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