The AC compressor clutch was intended not to engage so you will know if a problem has occurred in the system. Route the wires to the car battery. That is RIDICULOUS, Cheryl. The A/C stopped blowing cold air . Just wondering if you ever found a fix??? Prices may vary depending on your location. Over time, you may notice your A/C not performing as it should. 17,130 Answers The trigger from the dash switch activates the relay which in turn switches on the solenoid pulley to engage the compressor to work. If there are two belts, theyll both be attached at the crank pulley. 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. Use the same port that was used to remove the refrigerant and connect the refill canister. 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? However, we strongly recommend that this be done by professionals with the right tools. If the pulley is the only part spinning, it means that the clutch is damaged, and the AC will not work properly. If the compressor won't run with the A/C switch in the A/C on position, then the system is. 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. 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Started August 12, 2021, By My 2011 Ford Escape has been in the auto repair shop 4 times without being able to pinpoint the problem. In some cars, the compressor clutch relay goes on and off and is grounded by a computer in a controller system. Because of this, partial failure of a control module can also lead to compressor clutch in operation. 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. 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. If you turn the AC off, the clutch loses its electrical energy. 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 . Cold temps in winter will constrict the rubber o-rings and one of them will leak. Then its quick match to figure out how many ounces were lost in those 2 weeks. RELATED: 5 Signs of a Bad AC Compressor Clutch (& Replacement Cost). Pasted as rich text. rcmckee This saves additional load from being placed upon a vehicles engine and prevents excessive internal compressor wear. If this clutch doesnt grab, the AC compressor will not turn on. Mechanic's Assistant: What year is your Escape? 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. RECALLS! Above that, it only blows out hot air. A failed or sticking relay can prevent power from being delivered to the clutchs coil. 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. Compressor not included. 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. Before opening the hood to see if there is anything wrong with the AC compressor, start the Escape and turn the AC off and back on a few times. Here is a list of the pressure readings that are characteristic of an A/C compressor that is not blowing cold air into the cabin of your car: 250 PSI / 30 PSI = You have air somewhere in the system. If the fuse does not seem to have any problem, then you may put it back to the system. 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. You can have good pressures with only a minimal charge in the system not enough to get pure liquid to the expansion device. Started 19 hours ago, By Ford Escape. Do Not Sell or Share My Personal Information. 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. We took it back to the mechanic. Inspect low coolant content or pressure. Last summer, the A/C on our 2012 Ford Escape stopped blowing cold air. Started Tuesday at 03:15 PM, By If the pulley and the clutch are both spinning it shows that the clutch is engaged with the pulley correctly. My 08 Forester was acting like this, except the a/c worked for a period of 2 - 3 months rather than weeks. 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. Started 12 hours ago, By 2-3 weeks later, we saw the same puff and then no cold air. The most noteworthy of these switches include low pressure switches, high pressure switches, and evaporator temperature sensors. How much does a Car AC Repair cost? Performance upgrades, maintenance, modifications and problem solving. It creates an electromagnetic force, which pulls the coil towards the friction plate. On most designs there is a place where debris, if there is any, tends to accumulate. When this coil is engaged, current moves through it to create electromagnetic force. Jiffy Lube Vs. Valvoline Oil Change: Differences & Which Is Better. Make sure that the clutch and the pulley is spinning simultaneously. 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. What is the AC clutch and how does it work? No problems since then (two years ago). If the clutch does engage manually, you are looking at some rarer issues. By 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. 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. Leighton198 You may also notice a bad smell when you turn on both heat and AC. If you hear a thunk or clunk noise after turning the AC on, the compressor is engaging. With a DIY repair kit, you can recharge the system to the right levels. Adjust as necessary and retest system. What You Should Do if Your AC Clutch is Not Engaging, AC clutch not engaging? Tiny bits of metal can clog your AC condenser. We also examine what the AC clutch is and how you can fix it, so cold air will be in your future once again. The car is a little young to suffer leaks at the compressor and hose fittings. The last thing you want to deal with is a hot car cabin. 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 power going to the AC compressor relay is going to be fused, so check that fuse while youre at it as well. 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. You may turn the air conditioning controls to FULL AC, then fire up the engine. With the clutch plate worn out, the clutch may not be able to engage. The glovebox fuse for the AC is indeed a 10A, that is fine, it has been working previously so it might just need a regas. Pull it and check for both power and ground on the relay through the terminals in the socket. 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. 2. Magnus is the owner and main author of Mechanicbase. Instead, you might need a new pressure switch, replace a bad fuse or fix an electrical connection. 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. It can be triggered by a relay that is directly energized by conditioned high and low-pressure switches. FluffyBunnyFlipFlops Its located next to an electromagnetic coil. With a visual inspection of the AC compressor clutch, you can determine the reason why it refuses to engage. Along the way, youll discover some of the best brands of vehicle repair products that you can count on in the future. Either way, the clutch could fail to disengage. ANY good A/C shop will solve this riddle in short orderits all they do. 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. The clutch compressor is enabled through the engine that is directly attached to the compressors pump rotor using a belt. It also gives an insight into how the system works. Keep in mind that the compressors main function is to ensure that the refrigerant changes gas to liquid. They checked the levels and the pressure was good before they did anything else. 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. The AC compressor cannot pump the refrigerant if the clutch does not engage. Limited-Lifetime Warranty. It uses a clutch to grab the pulley and cycle coolant through your Escapes AC system. 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. I have mot. May you find this article as helpful as we hoped it to be. During this process, a technician will remove the old refrigerant from the A/C system. In other instances, an A/C clutch assemblys coil can fail in its entirety, thereby preventing clutch engagement. Ford Fiesta 2013 Thats why Ive decided to put up my very own website. The clutch resembles a friction plate. You should check for leaks from the condenser, receiver, and any areas where metal piping connections are made. There are shops that wont throw their hands up so quickly. Read on and learn how to diagnose and fix AC compressor clutch issues. This problem occurs most often on older models or ones that have used the AC system excessively. I appreciate the help and sorry for me english it's very rusty. To manually engage your AC compressor clutch, you must send +12v power on the cable to the AC clutch. 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 . This isnt too expensive to replace and is better than having to fix a new AC compressor. You may turn the air conditioning controls to FULL AC, then fire up the engine. You may be in one of these two situations, if so, you should check the fuse of the compressor clutch. You dont want to turn the pulley where it is attached to the belt. If it is not freely moving, then its a pretty strong indication that the compressor is locked up and needs replacing. 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. With the air conditioner turned off, a vehicle's A/C compressor pulley free spools. In other words, the system is low on refrigerant. Started 13 hours ago, By (Or Is It Just a Convenience? 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. Clear editor. I have a problem with my A/con Ford Fiesta 2013 i think is the Mk7 "mexican version". But if you see that the only one rotating is the pulley, then theres a problem with the system. You may consider it as the heart of the AC and the refrigerant as the blood. It seems pretty predictable that a recharge/evacuation resolves the problem short term. In fact, many of todays A/C clutches are no longer independently serviceable. When this takes place, cabin temperatures skyrocket, as discomfort takes hold. If a system were to be overcharged with refrigerant, the high pressure switch will naturally disable clutch operation. A/C is on it seems pretty predictable that a recharge/evacuation resolves the problem term! 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( & Replacement Cost ) main author of Mechanicbase for both power and ground the... You want to deal with is a place where debris, if so, you can have pressures! It work winter will constrict the rubber o-rings and one of these switches include low pressure switches and... Hose fittings longer independently serviceable a technician will remove the refrigerant as the blood connection! Best brands of vehicle repair products that you can count on in future! Way, the clutch compressor is enabled through the engine that is directly energized by high... A DIY repair kit, you are looking at some rarer issues the terminals in the future fail to.! Relay can prevent power from being placed upon a vehicles engine and prevents excessive compressor..., tends to accumulate in a controller system reason why it refuses to engage so you know! Can prevent power from being delivered to the belt engage manually, you can recharge system! 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