To finish, we'll add new refrigerant to recharge the A/C . 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. The most important connection is the 12v+ power wire to the AC clutch, if the wire is damaged or corroded somewhere, it will fail to engage the clutch. If I find something out from my mechanic, Ill give you guys an update. My 08 Forester was acting like this, except the a/c worked for a period of 2 - 3 months rather than weeks. 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. To manually engage your AC compressor clutch, you must send +12v power on the cable to the AC clutch. Route the wires to the car battery. Upload or insert images from URL. With the engine on, you can fully diagnose the problem. You can do this in under 2 minutes with a test light. The exact cause of such issues also tends to vary slightly from one model of vehicle to the next. Had transmission rebuilt (Pro).My problem is that when it gets around 35, 8L90E Specs, Performance, and Identification, TH400 Transmission Specs, ID, and Common Problems, Ford Windstar: AC Compressor Not Turning On Diagnosis, Chevy Avalanche: AC Compressor Not Turning On Diagnosis, Mazda 6 P0320: Meaning, Causes, & Diagnosis. If the PCM is running, it can monitor if the refrigerant pressures are within its limits. 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. If current draw is 2.5. Check the wiring to the clutch for any issues. With this force, the coil is pulled toward the plate, which gives the pump rotor the power it needs to run the compressor. Ensure that your engine is turned off when performing this inspection. Started February 20, By Check the front of the compressor clutch. Also, its important that you replace the fuse with the appropriate amperage. Do NOT jump the low pressure switch to operate the compressor non-stop so you can add refrigerant. A blown fuse wouldn't cause the clutch to engage after filling it up with refrigerant so you can probably safely rule that out. 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? $8499. With time, a compressors clutch assembly can begin to show its age. Thank you so much for the feedback thus far. DaveOM Fix an Air Conditioning Not Working Video. In some cases, the wiring may be fine but the harness is the problem. Aug 19, 2018. That could explain why it works for a while, then stops working. The psi for the low side should be about 25 to 40. If you hear a thunk or clunk noise after turning the AC on, the compressor is engaging. Air is cold. Paste as plain text instead, You may be in one of these two situations, if so, you should check the fuse of the compressor clutch. Inspect your compressor for an internal mechanical or electrical problem. Also, it is quite labor-intensive to take out an old compressor and fix a new one. Adjust as necessary and retest system. It also gives an insight into how the system works. An A/C compressor clutch can fail to engage for a number of reasons, many of which are electrical in nature. When the shop did the evacuation, how many ouces of refrigerant did the machine recover? - My E350's AC was not working (clutch not engaging) so I added two cans (22 oz.) Inspect the harness to make sure that it doesnt have any opens or shorts. This helps to filter and store the liquid refrigerant when it begins to turn back into a gas. 2012 ford fusion evaporator temperature sensor bypass. It could be because of a blown fuse, a bad clutch coil, or an open on the wire to the clutch coil. (2012 - 2023) Ford Fusion Battery Sizes & Specs (2006 - 2023) Ford Ranger Battery Sizes & Specs (2000 - 2023) Thats why Ive decided to put up my very own website. If you continue to use this site we will assume that you are happy with it. Inspect with the Engine Off . -or-. Diagnosing the problem with your AC compressor clutch is not a complicated thing to do. Can It Just Be Low On Hi And most places will roll the diagnostic fee into the cost of repair if they do the work. 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. However, if you notice that is worn, then it would have to be replaced. There is an AC relay in the relay box next to the battery. If the fuse does not seem to have any problem, then you may put it back to the system. Turning on the AC automatically turns on the radiator fans, hot or not hot. Aside from this connection, you would need to visually inspect the rest of the wires running through the system. 37 % of the time it's the. Only 20 left in stock - order soon. First, turn ON the AC and fan to the maximum. Click Here for the 5 best options. 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 try disconnecting the low pressure switch and bridging the connector , run engine briefly with air con on and see if compressor engages. Started February 26, 2015, By Stephen Interior Leave a comment 7,609 Views. Certified Automotive Diagnostic Technician. If this clutch doesnt grab, the AC compressor will not turn on. Has brand new compressor, drier and not low on freon. Cold air started blowing again! This article intends to give few techniques on how to troubleshoot AC clutch problems. An A/C clutch receives its operational commands through inputs made by a driver, through the systems dash-mounted control head. Along the way, youll discover some of the best brands of vehicle repair products that you can count on in the future. 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. . In fact, many of todays A/C clutches are no longer independently serviceable. 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. Symptoms. 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 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). I thought it might be low on freon, but when I went to check the low pressure, I got a low pressure reading of 100, which is way too high. Going further would require some basic knowledge of the components of an AC compressor clutch. Do it somewhere quiet. 4.5 amps, check clutch air gap. 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. You can have good pressures with only a minimal charge in the system not enough to get pure liquid to the expansion device. . Previously the air didn't work when set at level 2 and 3 of the four levels. In most car models, only a +12v cable goes to the AC connector, but sometimes you can also find a ground cable. On most designs there is a place where debris, if there is any, tends to accumulate. Last summer, the A/C on our 2012 Ford Escape stopped blowing cold air. An A/C compressors clutch assembly is provided power and ground through a wiring pigtail that departs from an engines main wiring harness in most cases. If nothin happens, ac clutch bad. The bypass you tried relies on the fuse listed to have power to the relay. Definitely dye should be added so that any leaks can be found. Blower fan works but hot pig tails assuming it's on it way out. This is usually the most common problem with car AC systems, so its always wise to start here. You should check the following areas before making any new fixes. Goodmorning, the ac compressor on my ford escape is not engaging. Find a repair shop that can put a set of refrigerant gauges on the system. There are shops that wont throw their hands up so quickly. The most noteworthy of these switches include low pressure switches, high pressure switches, and evaporator temperature sensors. However, one must also determine the reason behind the fuses failure. That is RIDICULOUS, Cheryl. Castrol Edge vs. Mobil 1 Oil: Differences & Which Is Better? The clutch isnt going to normally wear out when its newer. Its possible to have too little or too much refrigerant causing the problem. 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). It is possible that on this car, the clutch fuse is the one in the PJB (glovebox fuse box). Slipping Belt- A slipping serpentine belt can cause the vehicle's AC compressor to turn slower than it . Plenty enough to get it to engage. Your shop should know where that spot it for your cars AC design. You will know that something is wrong with the AC system if something in it is not working properly. If the wires arent properly connected, it could cause the compressor not to malfunction. Either way, the clutch could fail to disengage. zain611 A vehicles A/C system stops the summer swelter in its tracks, replacing it instead with a comforting chill. Any good shop should be able to trace this down. If your car system is low on coolant or pressure, this could be too dangerous for your car. I attempted to add a little bit anyways (not much) to see if the clutch would kick on but no luck. and what to Has Been In The Shop 4 Times For This Same Problem. The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. This helps the refrigerant to turn into a gas. Now they are saying they have found new leaks in the condenser and want to charge us more. Your cars AC system contains many electrical wires and connections. 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. On the other hand, if it is turning freely, we need to determine why its not activating. This does not in any way affect the price you are to pay for any Amazon product. Wiring is another area that could cause an AC compressor clutch not to engage properly. Then look at your underhood sticker to determine how many ounces you SHOULD have. Next, they will evacuate the system according to Ford's recommendations. 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 previous content has been restored. Today, aftermarket A/C compressors can be purchased for a reasonable cost, eliminating the monetary advantage associated with clutch replacement. When this switch fails, your air conditioning will only blow warm air. It may be because the vents are covered with frost. Refrigerant pressure is OK, but no cooling? ), P2004 Code: IMRC Issue (Symptoms, Causes, and Fixes). Marvel Mystery Oil vs Seafoam: Which is The Better Choice? The Compressor Is Cycling More Often Than I Recall. (These are the ports where the gauges are connected. If there are two belts, theyll both be attached at the crank pulley. No problems since then (two years ago). The car is a little young to suffer leaks at the compressor and hose fittings. Pasted as rich text. One comes from the power relay and one from the fuse. In order for the AC Condensor to do its job it must stay as cool as it can. Clear editor. Enginge Shut Down Stop Safly Now This Messige Come Every 10 To 20 Minute. Started 12 hours ago, By The following steps will assist you in manually engaging your A/C compressors clutch assembly using the jump method. The clutch resembles a friction plate. There are three reasons why the compressor clutch does not engage, especially if the sensor detects them. Check Function Using a 12-volt test light, connect the alligator clip to the negative terminal on the battery. Its meant to engage and disengage the compressor pulley from the drive. 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). No, old AC compressors with a clutch should not spin all the time. A vehicles air conditioner compressor clutch serves as the make/break point for power distribution to an A/C compressors internal drive components. This indicates some form of wiring problem. When a vehicles A/C system is commanded into operation, power is distributed to the A/C compressor clutchs magnetic coil. When the engine is on. I will check through wiring etc but I think that bridging the relay would give a quick answer to where the issue might lie. If there is no power in the fuse or relay then the main wiring must be checked. A/C only blows cold air below 78 degrees or so. Related: Symptoms of a Bad Car A/C Condenser. 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. When problems of this nature arise, an A/C systems gasses fail to circulate, thereby preventing cooling from taking place. Pulley: If the compressor pulley bearings are failing, they can make noises, generally a grinding, roaring or squealing noise. 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. Next is to remove the fuse from the system and check it using a multimeter. 3. These switches directly influence power/ground delivery to an A/C clutch. Cold air started blowing again! Throughout the years Ive been lifting the hood and rolling under, Ive encountered just about every car trouble out there. Touch the positive terminal to see if the test light is working correctly. What Happens When There is Oil in The Coolant Reservoir? 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. Pull it and check for both power and ground on the relay through the terminals in the socket. back to AC / heater Complaints 271 Crash Tests 3 Lemon Law 7.6 pretty bad Typical. Took about half a day, but the technician finally said he could see an oily residue on the evaporator hose, and replaced the evaporator. It may even be illegal to do it yourself where you live. You could also get warm air instead of cool air. RELATED: Car AC Not Blowing Cold Air? 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