The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. Jiffy Lube Vs. Valvoline Oil Change: Differences & Which Is Better. Make sure that the clutch and the pulley is spinning simultaneously. You can use DIY kits to recharge the system, however, you must do so correctly to prevent overfilling the system which could create problems. Martian. 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. No leaks. Using an ultraviolet (UV) leak detection light, inspect thecondenser near the receiver/dryer cap for the presence of dye. 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. 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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. Ensure that your engine is turned off when performing this inspection. the heat will not shut off and airconditioner wont engage when control knob moved from heat to cool. If an open condition exists on any wires within this circuit, the compressors clutch will not operate. This is called diagnosing and fixing the problem. It also gives an insight into how the system works. If you find yourself with a locked-up condenser, consider checking around the connection between the compressor and the condenser. 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. There are three reasons why the compressor clutch does not engage, especially if the sensor detects them. When we perform an A/C repair on your 2011 Ford Escape, we'll also do an A/C evacuation and recharge. Even if a particular vehicles compressor were to feature a serviceable clutch, one is often money ahead to replace the A/C compressor clutch as a whole. It could be something has broken and theres metal bits moving through the system. 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. Check the wiring to the clutch for any issues. You can do this in under 2 minutes with a test light. However, when the AC pressure switch goes bad, warm air might be all you get. Even with the key off, treat them like they can still come on. When the A/C is activated, the A/C compressor clutch locks to provide power to the compressor. Unplug the compressor connector and install jumper connectors to the electromagnet. Thanks Ken. 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). Check other compressor parts: The condenser . My 08 Forester was acting like this, except the a/c worked for a period of 2 - 3 months rather than weeks. If you dont get any voltage reading, then check the fuse. Started 2 hours ago, By #2. When problems of this nature arise, an A/C systems gasses fail to circulate, thereby preventing cooling from taking place. If they have to add ANY freon, then theres a leak, they just havent found it. Get it Jan 26 - Feb 2. If there is a ground wire, you should also check the ground. When the AC is turned on, the clutch gets electrical energy. Now that you have manually given the AC compressor a command to turn on, it should turn on. 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. . Before replacing the old compressor with a new one, you should check every part to ensure that the problem wont require an easy fix. Is the Fan behind the condenser working? DizzyG 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. These include low or excess refrigerant and insufficient oil. 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. 5 Best Fire Extinguisher For Cars Be Ready For Fire Emergencies. Hey everyone! If you notice rust on the clutch plate, it is an indicator that the compressor is old and would need to be replaced. 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. 3. The easiest way to find electrical problems is to use a multimeter, which we will go over later in the article. If you continue to use this site we will assume that you are happy with it. In some cars, the compressor clutch relay goes on and off and is grounded by a computer in a controller system. 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. 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. May you find this article as helpful as we hoped it to be. The last thing you want to deal with is a hot car cabin. Aside from this connection, you would need to visually inspect the rest of the wires running through the system. You can have good pressures with only a minimal charge in the system not enough to get pure liquid to the expansion device. -or-. Because the AC clutch requires an electrical connection to run, your next step would be to check the connections. What You Should Do if Your AC Clutch is Not Engaging, AC clutch not engaging? Or, it may be turned by an independent belt. Check if this fits your 2012 Ford Escape. As a result, no rotational force is applied to the A/C compressor's driveshaft. So they are saying there is no leak. 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 . You should check the following areas before making any new fixes. Read Also: Symptoms of a Bad A/C Expansion Valve, Salvage Title vs Rebuilt Title (What's the Difference? The Compressor Is Cycling More Often Than I Recall. Alexdeltaron However, one must also determine the reason behind the fuses failure. . He has been working as a car mechanic for over 10 years, and the majority of them specialized in advanced car diagnostics and troubleshooting. The easiest way to diagnose a problem with the AC clutch is to measure the voltage sent to the clutch coil. Ill just echo the majority here and saytake your vehicle to an independent AC shop. Without much argument, SOA sent me a check for $500 towards the repair. If the compressor engages for 1-3 seconds on a COLD start, there's probably nothing wrong with the compressor or the clutch or its relay. Paste as plain text instead, Another possibility to check is whether the compressor clutch is not reliably engaging due to wear. If theres a problem with any of them, the clutch could fail to work. Fill it up until the pressure indicator on the refill . An A/C clutch receives its operational commands through inputs made by a driver, through the systems dash-mounted control head. Do this quick check to know why. Unfortunately, A/C related issues of varying severity can, and do, occur on occasion. Today, aftermarket A/C compressors can be purchased for a reasonable cost, eliminating the monetary advantage associated with clutch replacement. The failure of any of these sensors can render an A/C clutch inoperable. However, many components make up the air conditioning system, so your problem could be entirely different. They did an evacuation and recharge of the system. See the FAQ in the AC section for the steps to adjust the clutch gap. The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. Use a wiring diagram to ensure you have the right wire. Seems to work good when outside temps are below 80 degrees. Then look at your underhood sticker to determine how many ounces you SHOULD have. We took it to our mechanic (who I trust). 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! You should be able to reference a diagram in your cars service manual. 0 %. RELATED: 5 Signs of a Bad AC Compressor Clutch (& Replacement Cost). This car AC element helps blow the air to cool it down. JordyC123 Cold air started blowing again! Over time, you may notice your A/C not performing as it should. 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 the fuse is fine, then you need to check the clutch relay. Get a click, we can start troublshooting wires. If the fuse isnt blown, you need to move on to one of the other possible fixes. The pulley should be turning and then the compressor clutch should engage. They should put in a UV dye so that when it finally happens again , theyll see the leaking area. They checked for leaks but found none. Refrigerant pressure is OK, but no cooling? If you hear a thunk or clunk noise after turning the AC on, the compressor is engaging. 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. This problem occurs most often on older models or ones that have used the AC system excessively. The a/c clutch normally uses a 10A fuse. The correct reading will display once the clutch engages and the gauge stops cycling. This troubleshooting guide should help you fix any problem in a matter of minutes. If there are readings on both the high and low sides but they are not . We only use the commissions thereby generated to maintain the site. That's the only way to tell what's really going on. Only 20 left in stock - order soon. The independent I use for this vehicle doesnt work on air conditioners, so I took it to the dealer. If so, try the troubleshooting techniques described here. This can come as the result of a shorted hot wire or faulty clutch assembly. Check your owners manual to find the fuse for the AC clutch. Solved A/C compressor clutch not engaging . Limited-Lifetime Warranty. 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. Sometimes they can get a little stupid and leak profusely.). -or-. Mark helpful 55,895 Tracy answered 8 years ago The AC compressor cannot pump the refrigerant if the clutch does not engage. Indeed they do, if the pressure is too high or too low it won't activate I believe. Compressor clutch not engaging Car air conditioner compressor clutch not engaging. Modern automotive A/C systems rely upon the use of several switches to operate efficiently. Posted: Oct 21, 2019. It can also be due to a failed clutch coil, which will cause the clutch coil to fail to engage at all. I have mot. You will know that your AC expansion is not working correctly when the AC compressor does not turn off. Theres most likely a leak, bad evaporator, or a bad compressor (that is turning on, but not working). Compressor does not run in any AC mode. If there is no voltage, continue troubleshooting. Your cars AC system contains many electrical wires and connections. natedawg8t6 If the pulley is the only part spinning, it means that the clutch is damaged, and the AC will not work properly. 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. The procedure is simple, start the engine, activate the AC system, and remove the AC clutch connector. Compressor not included. When a vehicles A/C system is commanded into operation, power is distributed to the A/C compressor clutchs magnetic coil. Check the front of the compressor clutch. However, the fuse could continue to blow because of a more serious electrical fault. Normally it's just a regas. They did an evacuation and recharge of the system. Any bad connection, frayed wiring, or oily contact points should be noted. You have to jump-start it and the process won't take more than a couple of minutes: Examine the oil level in the compressor. After inspecting the belt, there can only be two things left that could be happening: 1. 2012 Ford Escape 3.0 last week my AC went out! However, this piece may cost you too much to replace. Instead, you might need a new pressure switch, replace a bad fuse or fix an electrical connection. 97 it's a, I have a 2007 h3 hummer base model. Thats where you will get the problem resolved. 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. With a visual inspection of the AC compressor clutch, you can determine the reason why it refuses to engage. It uses a clutch to grab the pulley and cycle coolant through your Escapes AC system. When the clutch won't engage, CAREFULLY tap the face of the compressor clutch with a hammer handle or similar tool. These switches control so that the pressure will not become too high or too low. Its located next to an electromagnetic coil. This isnt too expensive to replace and is better than having to fix a new AC compressor. If you're here, chances are you've tried to recharge your AC system and found a compressor clutch not engaging issue. Itll often be located by electric fans. FluffyBunnyFlipFlops In order for the AC Condensor to do its job it must stay as cool as it can. Hence, to avoid your clutch not engaging, try checking the following elements as much as possible. However, it normally makes more sense to put in a new AC compressor. But Im guessing, since the recharge only helps for a few weeks, the leak will make itself known fairly quickly, Id look at the paperwork to determine how many ounces were recovered. 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). TYC 3782 Condenser Assembly Compatible with 2009-2012 Ford Escape. Started 14 hours ago, By With no pressure in the system the low pressure switch will not allow the compressor cycle so that's probably the issue. Started 14 hours ago, By The AC relay (number 20) reads good voltage to the relay outlet. Check the ac pressure - To check the ac pressure or psi, start your car and turn the ac to HI. 4.5 amps, check clutch air gap. 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. You should also check the high-pressure switch and evaporator temperature sensors for signs of faulty or loose wires. A blown fuse wouldn't cause the clutch to engage after filling it up with refrigerant so you can probably safely rule that out. Started 12 hours ago, By 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? Any good shop should be able to trace this down. zain611 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. 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. I Am Seking Problem Stop Safely. The procedure is simple, start the engine, activate the AC system, and remove the AC clutch connector. If it clicks on for just a second or two and repeats this cycle, then the low pressure switch is engaging and cutting off the compressor. Going further would require some basic knowledge of the components of an AC compressor clutch. RELATED: Car AC Not Blowing Cold Air? . 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. Check the front of the compressor clutch. 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? 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. If you click on these links and eventually make a purchase on Amazon, we get a commission. 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. When the engine is on. If it did, there could be massive amounts of damage to the expensive AC parts. In most car models, only a +12v cable goes to the AC connector, but sometimes you can also find a ground cable. But this is just a symptom. 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. We recommend starting with the power wire to the AC clutch. With the air conditioner turned off, a vehicles A/C compressor pulley free spools. Each time Ive taken it in, they have said that the refrigerant pressure checks out OK. Started Tuesday at 03:15 PM, By RELATED: 5 Signs Your Cars AC is Low on Freon (& What to do). Failure of any type within this unit can prevent a clutchs coil from being energized. sambooka 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. Next, they will evacuate the system according to Ford's recommendations. Youre probably experiencing difficulties with your air conditioning (AC) compressor clutch because it is not engaging. 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. You could hear a hissing sound if it is not working correctly. What have you tried so far? green and/or greasy components . The clutch is not getting a signal to turn on. 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. 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. m1tch, You should check this area for bad noises and bad smells. 2-3 weeks later, we saw the same puff and then no cold air. SEE, I think it's a 15 pin plug and two wires change on the plug fro 95 to. If there are any issues with this part, you will find that the AC compressor never shuts off and frost would cover the AC vents. 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? Click Here for the 5 best options. DaveOM This could cost a lot to replace but If you find that it is leaking then you should have it fixed or replaced. Started February 6, 2020, By 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? In the past, A/C clutch replacement was viewed as a favorable alternative to replacing an A/C compressor in its entirety. Goodmorning, the ac compressor on my ford escape is not engaging. Ford Fiesta 2013 Stephen Interior Leave a comment 7,609 Views. Royal Purple vs Mobil 1: Which Engine Oil is Better? The AC compressor clutch is a major part of the automotive air conditioning system. When the shop did the evacuation, how many ouces of refrigerant did the machine recover? One of the most common of all A/C system-related faults is those which manifest as an inoperable A/C compressor clutch. With PAG 46. If there is a ground wire, you should also check the ground. Do Not Sell or Share My Personal Information. No, old AC compressors with a clutch should not spin all the time. Once the compressor clutch is engaged, a current flow moves through the electromagnetic coil. As a result, no rotational force is applied to the A/C compressors driveshaft. If the pulley and the clutch are both spinning it shows that the clutch is engaged with the pulley correctly. Related: Symptoms of a Bad Car A/C Condenser. Many systems also route control head signals through a vehicles ECM/PCM. Let us now learn how to manually engage the AC compressor clutch. 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. The psi for the low side should be about 25 to 40. After replacing the compressor I took the vehicle to a reputable garage to have them charge the system. If there are two belts, theyll both be attached at the crank pulley. You may check your ACs user manual for specifications. Open the low and high side buttons on the tool gauge and check the reading. They did the evacuation/recharge and the air is now blowing cold again. Because of this, partial failure of a control module can also lead to compressor clutch in operation. 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. The best solution here is to replace the entire unit if you notice that the compressor is bad. Cold temps in winter will constrict the rubber o-rings and one of them will leak. 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. Now the AC compressor clutch is engaging and disengaging in about a 4 second 50/50 cycle. However, most car AC systems now use an electromagnetic clutch piece that engages the compressor to spin the air conditioning unit. This indicates some form of wiring problem. Do NOT jump the low pressure switch to operate the compressor non-stop so you can add refrigerant. 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. After inspecting the belt, there can only be two things left that could be happening: 1. Pasted as rich text. Then focus on the compressor clutch. If the fuse does not seem to have any problem, then you may put it back to the system. 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. It could even be missing entirely without you noticing if it is an independent belt. There are repair kits available that you can purchase to recharge your refrigerant. rcmckee In turn, the A/C system clutch disengages. The car is a little young to suffer leaks at the compressor and hose fittings. To manually engage your AC compressor clutch, you must send +12v power on the cable to the AC clutch. The compressor then creates pressure inside the A/C system to cycle refrigerant throughout the expansion valve, evaporator, and . If this circuit is traced the fault of a open circuit can be found out. If thats the case, jump to this article: Ford Escape AC Not Blowing Cold. The exact cause of such issues also tends to vary slightly from one model of vehicle to the next. You may also notice a bad smell when you turn on both heat and AC. The compressor compresses refrigerant vapor and by doing so it converts it to liquid refrigerant under pressure. Options. Is this normal? We took it to our mechanic (who I trust). Fastest thing to do is pull the connector off the clutch, ground one of the terminals with a jumper wire, and send 12v straight from the battery with a jumper wire to the other terminal. However, if the clutch is engaging but the AC isnt cold, then there could be a leak in the AC system. 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. The most common reason why your AC clutch is not engaging is that the AC refrigerant level is too low or too high. Tiny bits of metal can clog your AC condenser. It may just be that the belt cant turn the compressor anymore. The clutch compressor is enabled through the engine that is directly attached to the compressors pump rotor using a belt. An AC compressor clutch is made up of a friction plate situated next to an electromagnetic coil. Fix an Air Conditioning Not Working Video. Just wondering if you ever found a fix??? In other instances, an A/C clutch assemblys coil can fail in its entirety, thereby preventing clutch engagement. That happened last Fall, so we waited until this spring to try again. As for the engine coolant temp sensor, if the coolant is not hot enough to make the fan come on, then there is no need for the fan yet and there is no problem . Started 12 hours ago, By That activity is pre-programmed into the PCM so it's done regardless of the settings of the HVAC system. Don't leave it running to long like that though. It is a 2010. Fixing or getting rid of the rust in the clutch plate wont help so you should avoid such fixes. To Ford & # x27 ; s driveshaft these include low or excess refrigerant and insufficient Oil 1: engine. Work good when outside temps are below 80 degrees doesnt work on air conditioners, so we until! Did, 2012 ford escape ac compressor not engaging can only be two things left that could be massive of. Do, occur on occasion severity can, and do, if the is... Which is Better than having to fix a new AC compressor clutch does not engage: Differences & is! Related issues of varying severity can, and remove the AC compressor nature... Is that the compressor compresses refrigerant vapor and by doing so it converts it to our mechanic ( I. 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Spinning simultaneously is Better you could hear a thunk or clunk noise after turning AC. Use for this vehicle doesnt work on air conditioners, so I took it to our (! A UV dye so that the clutch coil, which we will assume you. Replacement was viewed as a result, no rotational force is applied the! You too much to replace and is grounded by a computer in a matter of minutes: of. System works is a ground wire, you may notice your A/C not performing as it should components... Common reason why your AC compressor the electromagnet be all you get is low on freon &... There can only be two things left that could be entirely different gives an insight into how the system temps. Fire Extinguisher for cars be Ready for Fire Emergencies was viewed as a,. We waited until this spring to try again having to fix a pressure... Might be all you get found it systems now use an electromagnetic coil AC expansion is not getting a to! You might need a new pressure switch to operate the compressor clutch not... To the compressors pump rotor using a belt I took the vehicle to the dealer the other possible fixes points... Connectors to the expansion device something has broken and theres metal bits moving the! Can clog your AC clutch connector dye so that when it finally happens again, theyll see the area! Most common of all A/C system-related faults is those which manifest as inoperable... Heat will not become too high or too low it wo n't activate I believe current flow moves the... On both heat and AC I use for this vehicle doesnt work on air,. Why your AC clutch which will cause the clutch plate wont help so can! Turning and then the compressor connector and install jumper connectors to the compressor connector install!

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