Over time, compressors can wear out and stop working properly. When the refrigerant leaks again, the leaking component will shine under UV light. It does blow air, and when I put it in max a/c, it blows more air, but it is not cold. If the button does not work or the control module is not sending a signal out, then the A/C compressor will not turn on. Insufficient amount of refrigerant is still the main cause of a non-functioning AC system. Do you still sweat while driving your Ford F-250 Super Duty? Check the owners manual of your vehicle or the fuse box cover to find the exact location of the AC fuses. First REAL test of air was while I was in southern California april-june 2007. i believe its #43 in the passengers kick-plate. With the tool connected, turn on the ignition. If a pressure switch is not indicating the correct pressure, then the A/C system will not work properly. Note: If the blower motor suddenly fails from one second to the next, you must first check whether a blown fuse is responsible for the failure. My AC has had intermittent problems lately. Smaller holes have to be localized by searching all components with a gas detector. Ideally, the refrigerant should never leak in a properly sealed AC system, but most car AC systems do leak small amount of refrigerant over time due to minor imperfections and will need recharging after every few years. Jump to Latest Follow . 4. Ford F250 F350 Truck 1999-2006 Service Repair Workshop Manual Download PDF Download Now. A leaking condenser can lead to a loss of refrigerant and reduced cooling performance of the system. You can recharge your AC through the low-pressure port with a do it yourself AC recharge kit. 3inch downpipe, 4 in exhaust. . Most kits come with a sealant that is supposed to repair leaks in the A/C system. Have you tried all speeds of the fan? You need a dealer that knows what they are doing. When idling and looking at the compressor i turn on the ac and nothing engaging, i toggled back and fourth between off and on in each position for no less than 30 seconds. I have the exact amounts needed from my ford book. 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I am having almost identical problems using Forscan on my laptop I was able to see the compressor "demand" and compressor "on" signals on the PCM, as well as the system high side pressure! It must be a faulty sensor since PCM is actually turning the compressor on and off randomly but I cannot see the climate control sensors in Forscan. exh. For example, if the buttons and controls don't work . The vacuum fluorescent display window will show 888 and all . Home Troubleshooting Ford F-250 AC not working causes and how to fix it. 103K New heads to repair diesel in coolant, 148K. The air conditioner in our 2004 Mazda Miata has honestly never worked so great--it always blew out warm air. This issue turned out to be the evap temp sensor. Refrigerant level. If its low, that could be why your air conditioning isnt working properly. 2. JavaScript is disabled. In general, troubleshoot an Air conditioner on a Ford F150 by turning it on and open the hood. First check to see if you have heat, there is an electronic blend door that changes between hot and cool air. The sensor is $38 on Ebay for a genuine Ford part. Here at HVACDirect.com, we have everything you need to know about your vehicles AC system. I'll try A/C cycling switch. It also puts unnecessary strain on the entire AC system which negatively impacts the fuel consumption. Turn the fan speed to the highest setting. A wiring diagram for your specific model year and engine will help you identify the root of the issue and get it fixed quickly. (1). When looking for the reason, you should always start with the most obvious cause, low refrigerant level in the system. The belt drives the AC pulley on the AC compressor. and. Thanks. Replace the evaporator temperature sensor. 3. Thoughts on the original poster's issue. Both of these are at risk of clogging due to contamination, for example due to metal shavings from a failing compressor. FORD F-250. The parts cost itself will be between $100 and $200 while the labor costs will be between $100 and $300. "Ford F-150, F-250, Expedition, Lincoln Navigator Repair Manual 1997-2003"; Eric Michael Mihalyi, A.S.E., S.A.E., S.T.S., Jay . The sound will be most prominent for a few seconds when you turn on the air conditioning or adjust the temperature. ill see if i can find the procedure if you still need it. The gap is checked with the engine and compressor both off. In the event of a defect, the mechanic can directly initiate the repair. It will either produce less cool air or it won't produce any cool air at all. Look at the condition of the accessory belt that is wrapped around the AC compressor in the engine bay. There are many reasons why air conditioning may not be working properly on your Ford F-250. One is labelled H for high-pressure and the other one is labelled L for low-pressure. If the condenser is dirty on your F-250, the simplest solution is to clean it. The A/C system in your Ford F-250, with proper maintenance, can last for years. Being a sweaty mess is never a good time. Granted I work on tractors but from what I've seen pickups are real similar in design of the systems. Check out this article about how the engine code P0128 disabled the A/C compressor along with other components on a Chevy Colorado. With these tips in hand, you should be able to get your trucks air conditioner blowing cold air again in no time! if outside temp is 90F or above the vehicle does not feel comfortable until I have driven roughly 25 miles. To begin troubleshooting, you must . Since Ford F-250 Super Duty is equipped with on-board diagnostics (OBD), a fault diagnosis can provide initial indications of where the malfunction is located in the air conditioning system. Delear scratching there head and saying it's working. if you smell refrigerant, it's likely the core. Do Not Sell or Share My Personal Information. When looking for the reason, you should always start with the most obvious cause, insufficient amount of refrigerant. In this post, well walk you through finding a Ford F250 air conditioning diagram and troubleshooting some common AC problems in this model truck. So whether youre a do-it-yourselfer or taking your vehicle to a professional mechanic, having a Ford F450 air conditioning diagram on hand will make diagnosing and repairing any issues much easier. Unfortunately, this procedure does not allow you to get into the deeper layers of the filter. The control will exit self-test, retain all intermittent DTCs and then turn OFF (display blank). Good luck, try the Auto on the controls and give it a few minutes. But if you don't mind cleaning up a little bit then a reputable shop that does ac a lot will be cheaper. See: Diagnosis By Symptom. Ford Trucks. I took it to FORD as I have ESP. An A/C machine is needed to properly recover, vacuum, and charge the system. To work on A/C systems, and with refrigerant specifically, you should be certified. Issues that take away power or cause low battery voltage, can make the engine control module keep the A/C compressor from turning on. Well, I would think you can hold off, but the way everything is intermingled and controlled by another box, hard to say if you will damage the compressor or not. I figure if i get a few years on it and it still blows the compressor I'll just fix it all at once. Less common causes are clogged expansion valve or orifice tube, overcharged oil, faulty blend door actuator, or a defect in the climate control unit. Check out this case study of a bad relay not allowing the radiator fans to come on! I Have Had Problems With My Air Conditioning. Turning on your air conditioner to maximum often may also cause bacteria growth due to the excess water that is dripping in your unit. Not sure if you would get a trouble code if you unplugged the relay and/or fuse that controls the compressor. Learn More #2: A/C Does Not Work After Idle Or Short . If youre unsure of what might be causing your F-250s AC problems, its best to consult with a professional mechanic for diagnosis and repair. Bad A/C button or control module/head unit. Thanks, I will take it in to Ford and see if they can figure it out. The belt should not be frayed, the belt teeth should not be chipped, cracked or peeling and the belt teeth should not be "shiny" or worn (also called "hazing"). If the fuse is blown, replace it with a new one with the specified amp rating. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this website is the sole responsibility of the user and not DiagnosticMechanic.com. I have two different problems. The refrigerant pressure is affected by the outside atmospheric temperature. Or the condenser is bad. It can become clogged with debris from the road. The gauges showed the Freon was in spec. I have watched a few YouTubes on evap core replacement. A knocking noise could be another indicator of a bad blend door actuator on your F-250, although its quite rare. Low compressor oil levels and old age can cause A/C compressor failure. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. For example, if a program crashes, Event Viewer will open and display information about the crash. F250 Air Conditioning Troubleshooting . You have a warranty just for this purpose. The air flow from the vents is choppy and not smooth. The other day I got in the truck and the fan would not blow at all, and after about 15 minutes of driving it came on, but still no conditioned air. Next, check the AC condenser for . The orifice tube has a mesh screen and can become clogged. *** The Official Superduty Morning Coffee Thread ***. 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