Check out free battery charging and engine diagnostic testing while you are in store. Put the cap on and check the port with a soap and water solution and see if it leaks then. If not continue with these troubleshooting steps. A/C would blow cold then suddenly hot, and now just hot. 2L 2-valve engine. We're not trying to tear the truck down or anything - we love it - we just want to make sure everyone knows what's going on. A refrigerant leak is unique in the sense that refrigerant evaporates instantly into a gas once it isn't under the pressure of your closed loop A/C system. To find the high-pressure port, follow the smaller hose from the back of the compressor. Air conditioner low pressure switch defective. A blockage would bring either very high high side pressures, or very low low side pressures. Ford F-150 AC Is Not Working? RepairPal will help you figure out whether it's your AC Refrigerant Leak, Climate Control Electrical Issue, AC Compressor, or something else. I did test the low pressure switch by jumper method and within 15 secs compressor kick on. We hooked up a vacuum on the low pressure port for just over and hour and it held -30inHg. 0 Liter Power Stroke diesel engine was used in 2003-2007 Ford Super Duty trucks and 2003-2010 Ford E-Series vans/chassis cabs, is a 32-valve pushrod V8. The compressor shouldn't come on, as the low-pressure switch is tripped. P1469 Low Air Conditioning Cycling Period. It runs, and runs, and seems to be working fine. This is to use a fuel pressure gauge to see the exact amount of fuel pressure the fuel pump is producing. 0 Liter Diesel Engines The VT365, also known as the 6. If the light is on because of a misfire or a fuel delivery problem, and the problem does not recur after three drive cycles (under the same driving conditions), the Check Engine light may go out. com and affiliated sites. I rather recharge the system and see what happens. Find New Air Conditioning Hose Assembly including liquid line, suction discharge line, accumulator hose assemblies at low prices. If this is your first visit, be sure to check out the FAQ by clicking the link above. 2007 Ford Explorer SUSPENSION. I found what I thought was the low-pressure port on the passenger side, less than a foot from the front of the truck very close to the battery. NickD on Tue October 02, 2007 6:29 AM. The other day I went under the hood to check fluids and while checking the transmission fluid, I noticed that the freon was coming out of the high side pressure port. Buy a can of 134a with a gauge on it. This means that any component that has abnormal internal leakage will increase the heat load on the system. There are many websites out there that explain this unexpected and deceptive piece of engineering from Ford, and if you Google for things like "ford oil pressure gauge real convert" or "f150 oil pressure gauge real convert" where you can find many more unhappy car and truck owners trying to figure this out - and if possible, fix it. When the dispenser's pressure needle is around 60 psi, the can should be close to empty and the car may be started with the AC on. An automotive air conditioner has a high and low side, divided by a metering device and the A/C compressor. It is located directly on the suction accumulator/drier and is the only port on the canister that has a black cap so you can't miss it once you locate. But the low pressure port is located on the firewall, on the pass. Admittedly, prior to this you could have taken all my automotive AC repair knowledge and fit it in the belly button of a lady bug, but I was confident enough that one of sizes of valve cores in this kit would fit so I rolled the dice and purchased it. AC work does not suck if you know what you are doing. • Never attach or remove Fuel Pressure Tester Kit from fuel rail test port with the ignition key on. The caps have an o-ring in then that seats and helps seal the valve from dirt. 6, and the picture that shows is where my hi-pressure port is, ive been told that the low-pressure port somewhere on the a/c canister or something guys please help photos and any suggestions would Help. The compressor is turned off immediately when the A/C compressor pressure cutoff switch detects an acute increase in pressure. Locating low air port and air conditioner refill on 97 F150 how to. I've gotten a new valve for the port, and taken the old one off. 2 jugs good quality antifreeze, preferably low phosphate (4L/1gal) 2 jugs distilled water (4L/1gal) Time required to complete: 1/2 to 1 hour depending on how quick you are. Very nice little set of valve cores. Even so, most leaks are small and hard to spot. Order the part with stock number in hand. 2 with front and rear ac units on the same system. So is the port near the air filter boxthe low pressure port or is it the one near the Power stearing pump?. Check the pressure one last time before removing the dispenser hose and replacing the protective cover on the fill port. So, let’s find out why the car AC not blowing cold air after recharge. The higher the quality of the power steering pressure hose is, the greater the delay of its deterioration. Then see how high the pressure is. The low pressure port for charging a 2007 Ford F150 5. This is a simple charge kit which includes a valve to control the refrigerant flow that is located at the top of the charge can, a gauge which tells you the pressure in the system and finally a service port connector which enables the refrigerant to flow into the system. 4 engine - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. rockauto will have a picture of the part and you can then locate it in the engine bay. To read your truck's codes, you'll need a code scanner such as the one pictured below, available from OBD-2. Make sure your A/C is running at its best. 7/14/05: Pressure relief valve blows open and releases all the refrigerant to the atmosphere. P0401 FORD Meaning Early Exhaust Gas Recirculation (EGR) systems component s include and EGR Valve, and Engine Control Μodule (ECΜ) Controlled Vacuum Switch Valve or EGR Solenoid and an EGR Vacuum Μodulator. Very nice little set of valve cores. Perfect credit? Our rates start as low as 3. I want to add some refrigerant to see if there are any improvements. This means that any component that has abnormal internal leakage will increase the heat load on the system. I'm going to put the new one on, then have it vacuumed out. Remove the cap and put it in a safe place. Shop online for original OEM & replacement parts. com 1Restrictions may apply. The high pressure fitting is the larger of the two. It's to this Schrader valve that you and I can connect a fuel pressure gauge to and check fuel pressure. This simple fix recharges the R-134a (freon), stop leaks & gets your car A/C cold again. Low pressure should be in the 25 psi area and not above 45 psi. JEGS has a large selection of fuel pressure regulators for street and race cars ready to ship. The type of system is determined by the device used to control the expansion of the high pressure, high temperature liquid to a low pressure, low temperature liquid. 2015 Ford F-150_ F150_ f150_ F 150_ 4x4 SuperCrew Lariat. If the pressure is still too low, keep adding refrigerant in the manner described above. do you have a picture of the low side ac port - 1993 Chevrolet S10 Close. Jun 08, 2010 · Relist: I asked where the low pressure port on a 2007 Ford Freestyle is. Have the system evacuated, charged and leak tested by an MVAC certified technician, utilizing approved recovery/recycling equipment. Power steering hoses, however, are prone to leakage over time. We connect the lines of the A/C gauges to the high and low ports of the system to test pressure. This means that any component that has abnormal internal leakage will increase the heat load on the system. Air conditioner system discharged. To find the high-pressure port, follow the smaller hose from the back of the compressor. Save on AC Hoses & Fittings with great deals at Advance Auto Parts. Mar 18, 2011 · This is to use a fuel pressure gauge to see the exact amount of fuel pressure the fuel pump is producing. Fuel pressure should also be tested under load with vehicle in gear or during acceleration. When this solenoid fails, it will be in a low-pressure setting. rockauto will have a picture of the part and you can then locate it in the engine bay. A refrigerant leak is unique in the sense that refrigerant evaporates instantly into a gas once it isn't under the pressure of your closed loop A/C system. These valves is similar to the Schrader valves used in the wheels of the Ford F-150. I'm going to put the new one on, then have it vacuumed out. If the AC isn't quite as cool as it used to be, the solution might be as simple as recharging the system. The fuse panel is located below and to the left of the steering wheel by the brake pedal. Ignoring the Signs. It shows where the fuel pressure test port is and how to test. "the A/C system is under high pressure. 200 Million used auto parts instantly searchable. Replied by coffee412 on topic Over Charged Air Conditioning Now, I can see this is going to turn into a big discussion on what freon. We test A/C Pro's claim that it can have your car's worn-out air conditioner blowing cold in just 10 minutes. Some service ports will leak a little. Your air conditioning system has two ports, low-pressure and high-pressure. com and affiliated sites. I thought i was just low on refrigerant and hooked up a recharge kit and gauge read 65psi so i did not fill and unhooked everything. 0 Liter Power Stroke diesel engine was used in 2003-2007 Ford Super Duty trucks and 2003-2010 Ford E-Series vans/chassis cabs, is a 32-valve pushrod V8. You finally found and repaired the leaky HVAC problem in your F-150, but now you need to recharge it. An automotive air conditioner has a high and low side, divided by a metering device and the A/C compressor. AC Fittings. It's called "Pressure/temperature saturation" This chart shows the pressure/temp relationship for R-12 and R-134a. Ford Engine Management Fault Code Identification I give to you Ford manufacture specific diagnostic fault codes. When the compressor was on, the pressure on the gage was normal but when it shut off, the pressure spiked off the gauge. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. 2014 Ford F150 XLT 3. Please click here if you would like to see a PDF Air Conditioner Troubleshooting Flow Chart. NickD on Tue October 02, 2007 6:29 AM. The low pressure line has larger tubing than the high pressure line, making it easy to distinguish between the 2. Enter your car’s make and model to find where the low pressure ac port is. Find Your Owner Manuals. Then see how high the pressure is. Sometimes there can be worn or unmodified AC systems that function for years without a problem. you can put in either hole before you attach the lines it will be about 3 or 4 ounces of oil. The sixth generation was unveiled in January 2019. Next, I hooked a cheapo DIY gauge onto the low pressure port, I got a reading of 100 PSI. Labor costs are estimated between $123 and $157 while parts are priced between $27 and $120. LF150TR and the standard ac- nance and care. So keep looking. Aug 29, 2014 · A/C Pro is the easy repair anyone can do! It only takes a few minutes, and you save a ton of money. If you have low pressure then check for leaks. 2 jugs good quality antifreeze, preferably low phosphate (4L/1gal) 2 jugs distilled water (4L/1gal) Time required to complete: 1/2 to 1 hour depending on how quick you are. Where is the low pressure AC recharge valve on a 2009 Ford Focus? I have recharged my AC in other cars before, so I know how. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. you are going to find the low side pressure hose. When you add oil to your air conditioning system you add it through the low-pressure port where it will mix with your refrigerant and travel through the system keeping the compressor lubricated. Turn the AC to MAX to start the radiator fans. The pressures do equalize when the engine is off. Connect it to the low pressure port. By letting it set, the refrigerant in the system will equalize and you won't have that lug of liquid on the low side anymore. Save on AC Hoses & Fittings with great deals at Advance Auto Parts. Jul 10, 2008 · "Low Pressure Switch" Operation On most A/C systems the "Low Pressure Switch" functions simply 'as a ground source' for the a/c clutch assy. 1993 300D: what should the low side pressure and high side pressure be with compressor running? mine is at 40 low side (blue hose) and 225 psi (red PeachParts Mercedes-Benz Forum Air conditioner: High and low side pressure - PeachParts Mercedes-Benz Forum. When the pressure is correct, stop filing the system and wait a few minutes. 6L 3-valve, unscrew the Evaporative Emission purge valve bracket and move the bracket to the side. On the 2003-2007 Accord these are to the rear of the right side of the engine. Attach the recovery machine's hoses to the car's air conditioning ports. Your air compressor will not build pressure. 2 jugs good quality antifreeze, preferably low phosphate (4L/1gal) 2 jugs distilled water (4L/1gal) Time required to complete: 1/2 to 1 hour depending on how quick you are. It's my first truck,so I don't know much about it. Look at the two service ports. Average repair cost is $1,100 at 36,900 miles. Find Your Owner Manuals. To read your truck's codes, you'll need a code scanner such as the one pictured below, available from OBD-2. Admittedly, prior to this you could have taken all my automotive AC repair knowledge and fit it in the belly button of a lady bug, but I was confident enough that one of sizes of valve cores in this kit would fit so I rolled the dice and purchased it. That will allow access to the fuel test port. The high pressure side and the low pressure side. Every system should have a given amount of pressure when at rest. The Ford Explorer is a range of SUVs manufactured by Ford Motor Company. For more info on this test, go to: FUEL PUMP TEST 2: Using a Fuel Pressure Gauge. The low pressure port on this particular vehicle is located on the receiver/dryer. A Cam Pack will not produce sufficient pressure 1) has excessive internal clearances due to wear, 2) has pressure blowby due to damage from being run low on fluid, 3) has weakened or collapsed slipper springs due to high internal temperatures. Not only would this be. When the refrigerant is drawn into the. ac low side port. A hydraulically operated plunger advances through this steel sleeve, sealing off the port, and forcing the metal into the die at high speed and pressure. Ford F-150 AC Is Not Working? RepairPal will help you figure out whether it's your AC Refrigerant Leak, Climate Control Electrical Issue, AC Compressor, or something else. Air conditioner not as cold as it. Charge the system via the low pressure port with a Leak Detection Kit like this so you can find the lea Hopefully your system was just low and now it is working again. 2L 2-valve engine. 2 jugs good quality antifreeze, preferably low phosphate (4L/1gal) 2 jugs distilled water (4L/1gal) Time required to complete: 1/2 to 1 hour depending on how quick you are. Each kit has been subjected to punishing real world testing to develop the optimal damping curve and spring rate for your vehicle. Some of the possible causes of failure in the system are listed in the air conditioner troubleshooting guide below. If you were to touch this part of the system, you'd feel it change from hot to cold. Mar 18, 2011 · This is to use a fuel pressure gauge to see the exact amount of fuel pressure the fuel pump is producing. The AC pressure switch is a safety switch that is mounted on both the high and low sides of the air conditioning system. The cap should not allow a leak. It is very important to correctly size and select the vacuum pump as it is to lay down the right specifications. Put it on as cold as it will go and on high to make sure. An automotive air conditioner has a high and low side, divided by a metering device and the A/C compressor. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. Is this normal?. I am trying to diagnose an AC problem and have a basic question. I took off the port side valve cover to check things out, fired up the engine, plenty of oil squirting around. We do not currently offer over-the-counter sales or installs, though we can recommend shops near you. On the 2003-2007 Accord these are to the rear of the right side of the engine. These are the codes applicable to the EEC-V processor (which all late-model F-150's have). The high pressure, for starters, is directly related to ambient temperature: the higher the temperature, the higher the higher the pressure. Mustang Wiring, Fuel Injection, and EEC Information, Use the information at your own risk. Jan 17, 2019 · Connect the dispenser's quick connect fitting onto the low pressure port. The compressor is the 'heart' of the air conditioning system, moving refrigerant through the system. If there is a problem with your compressor or evaporator, adding freon will not restore cooling. The cap should not allow a leak. 98 chevy 1500 AC low pressure very high. Air conditioning. XL STANDARD 17" Silver steel wheels Black grille, bumpers, mirror caps, and door and tailgate handles Black front tow hooks (4x4) Cloth 40/20/40 front seat CHROME PACKAGE 1 17" Silver-painted aluminum wheels Chrome bumpers Fog lamps SPORT PACKAGE 1. I took off the port side valve cover to check things out, fired up the engine, plenty of oil squirting around. The kit includes a rugged 66 in. I am trying to diagnose an AC problem and have a basic question. Is it turning on and off rapidly? If so, it is too low. Automotive Air Conditioning Information Forum (Archives) Removing Hose From High Pressure Port. Jun 08, 2010 · Low pressure switches on these trucks fail quite often as GM was stupid and let the switch carry the full current load that the A/C clutch draws instead of using the switch to control the compressor relay. This is due to the fact that Ford installed a Schrader valve on the fuel injector rail. Ohio tuning shop adds a twin-turbo setup and boost to create a Ford F-150 FX4 that can outrun a 2020 Mustang Shelby GT500 on the drag strip. Stage 3 Motorsports operates out of Peoria, Arizona. Manifold Gauge Readings. The 2004 Ford F-150 has 3 problems reported for ac not cooling. This simple fix recharges the R-134a (freon), stop leaks & gets your car A/C cold again. The high side pressure is low, at around 120 psi when it should be much higher in the 400 275-300 range. Air Conditioner re-fill and service. 25-mm stabilizer bar. I did not want to cause any damage and check inside car if air was cold or still hot. 2003 Ford F-150 charging A/C unit. Plus, the DIY kit fitting will only attach to the low pressure port. Thermal Expansion Valve (TXV): Here, the system changes from the high-pressure side to the low-pressure side. We connect the lines of the A/C gauges to the high and low ports of the system to test pressure. In this situation, most cars will be low on Freon. Your air conditioning system has two ports, low-pressure and high-pressure. Jun 29, 2012 · the rear a/c unit uses the same a/c charge ports that the front unit uses, check freon pressures, low side should be between 35-45 psi. The low side port can always be identified in an R134A system as being smaller than the other. I figure I have a restriction but I wanted to make sure if there is an expansion valve that monitors. But, people generally face this issue. Air conditioning systems rely on an accumulator to store liquid refrigerant that did not expand into a vapor in the evaporator. The high pressure side is higher also. Buy a 2007 Ford F150 A/C Pressure Switch at discount prices. No Cooling Effect Suction Frost Low Pressure Switch Cuts-Off High Pressure Switch Cuts-Off High Pressure Side Too High High Pressure Side Too Low Low Pressure Side Too High Low Pressure Side Too Low Both Low Pressure and High. It's to this Schrader valve that you and I can connect a fuel pressure gauge to and check fuel pressure. Follow the AC line to the engine and it should be located on the left if looking at the motor. P0796 Tech Notes When a transmission solenoid is malfunctioned, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. I thought i was just low on refrigerant and hooked up a recharge kit and gauge read 65psi so i did not fill and unhooked everything. Aug 19, 2019 · Why is My Car Overheating When the AC Is On?. drops to a lower pressure but not enough to keep the low side which your reading to be enough to keep the cycling switch. I've recharged the AC in several of my previous (older) vehicles, but never my 2002 F-150 or the hubby's 2003 F-150. " So I concluded that it wasn't in fact low on refrigerant and took it into the dealership. What should they read on a 01 ford with dual air? What is the low pressure side suppose to read? What is the high pressure side suppose to read? At 100 degrees outside and 60% humidity, the low reads 60 psi and the high side reads 250 psi I have the truck at idle when reading. 4 engine - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. High pressure on low side of A/C lines? Turned on wife's A/C in her 02 golf, and it blows out normal air - no cooling feeling at all. These are the codes applicable to the EEC-V processor (which all late-model F-150's have). The low pressure (blue gauge) should be 35 or less at idle, regardless of the type of gas. A manifold gauge set measures refrigerant pressures inside of an air conditioning system. Buy a 2007 Ford F150 A/C Service Valve at discount prices. Some people like to drive with their check engine light on. The metering device, component #3 on this air conditioning circuit and cycle diagram, is the dividing point between the high pressure and low pressure sides of the system, And is designed to maintain a specific rate of flow of refrigerant into the low side of the system. The most important thing is a true set of manifold gauges, pictured above. To find the low-pressure port, follow the larger hose coming from the compressor, to the accumulator near the firewall. 4 3v has inherent phaser issues, which i believe is caused by low oil pressure (i may be wrong) this causes advance and retard issues, The vehicle in question will try to stall on deceleration and also developed a slight knock prior to changing the shells. Even if you have recharged your AC, the issue in other car machinery can affect its working too. May 28, 2014 · Low pressure A/C port for 2007 Chevy Silverado? Where is it? The A/C recharge kit I bought does fit the smaller port right on the right side of the aluminum "can" in the center of the picture. There is a low-pressure port and a high-pressure port. Find detailed specifications and information for your 2007 Honda Odyssey. Low tire pressure warning Air conditioning Bluetooth Wireless Technology. XL STANDARD 17" Silver steel wheels Black grille, bumpers, mirror caps, and door and tailgate handles Black front tow hooks (4x4) Cloth 40/20/40 front seat CHROME PACKAGE 1 17" Silver-painted aluminum wheels Chrome bumpers Fog lamps SPORT PACKAGE 1. I rather recharge the system and see what happens. This one's on the market for $30,500. Got a gauge, connected it up the the low pressure port and see a fluctuating pressure. Recharging car air conditioning requires a few specialized tools. During operation refrigerant is returning to the compressor from the cooling (evaporator) coil in this line. Hubby's AC went out in his 2003 F-150. Plus, the DIY kit fitting will only attach to the low pressure port. Air conditioning. What A/C Compressor Pressure Cutoff Switch does for your vehicle. These codes cover All Ford Models in Europe at least and possibly other regions. Attach the recovery machine's hoses to the car’s air conditioning ports. It can be found inside a vehicle's engine compartment on the air conditioner's metal pipes. That should help you find the low pressure port since it has to be on that line. why do i have high pressure at my low pressure port on my a/c ? i havent had cold air for quite some time and decided to try and fix. if pressures are within range then the most likely cause would be one of two most common problems and they are 1. We then tried to refill the system with a few cans from autozone but it wouldn't take. *Make sure the condenser fan comes on when the readings are being checked. To find the high-pressure port, follow the smaller hose from the back of the compressor. Feb 02, 2012 · A/C clutch engaging and disengaging. When you're ready to upgrade your ride, opt for this 2016 Ford F-150 XLT, which includes features such as backup camera, Bluetooth, heated seats, hill start assist, stability control, traction control, Sirius satellite radio, a MP3 player, anti-lock brakes, and dual airbags. When I connect my pressure guage/recharge line to the low side port, the pressure reading is not steady, but varies from a low of about 20 psi when the compressor is running to about 50 psi when the compressor is off. 4 engine is near the condenser. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. Low-side air conditioner compressor motor pressure: this is the pressure in the air conditioner's refrigerant suction line (low side pressure during compressor operation) and this will be a relatively low number, often less than 100 psi. You won't need any expensive Automotive AC Gauges for this test. How to access low pressure AC fill on 2007 Ford Five Hundred SEL? I cannot find it easily accessible ANTYWHERE. I see, what I think is the low pressure fitting, but it appears as if I will have to remove some parts to even access it. Look for a hose that runs from the compressor to the accumulator; this is the low-pressure hose and you will notice a service fitting on the hose. These are OBD-II style codes. Cold Hose is an automotive air conditioning fitting and hose website. Charge the system via the low pressure port with a Leak Detection Kit like this so you can find the lea Hopefully your system was just low and now it is working again. I did find the low pressure Schrader valve was a bit loose so gave it a snug just for fun but no sign. I did not want to cause any damage and check inside car if air was cold or still hot. Next the high pressure gas goes to a condenser that sits infront of your radiator. A leaky AC hose will result in a decreased efficiency of your air conditioner. Remove the cap and put it in a safe place. That sucks. Turn on the AC, set the temp to cold, and turn the blower on a medium speed. CJ Pony Parts features 1964-2004 Mustang A/C Hoses & Valves at amazing prices. The air conditioner in your car is supposed to keep your cool, so if yours is blowing hot air all the time you're probably pretty pissed. A/C PRO is the easy DIY car A/C repair that saves time & money. 4 engine is near the condenser. my apologies, the 5. Iasked for a picture showing where it is or a diagram???. Your car's air conditioning is acting up, but you don't know what's wrong. rockauto will have a picture of the part and you can then locate it in the engine bay. The gauges allow you to see what the pressure is on the high and low sides of the system, as well as safely add. Shop our large selection of parts based on brand, price, description, and location. • Never use Fuel Pressure Tester Kit on Diesel or Flex Fuel engines! • Never attach Fuel Pressure Tester to any place other than the fuel rail test port. Is this pressure change normal when a compressor shuts off? For those who are wondering, I was pugged into the port that had the "L" cap on it so I'm assuming that I had to correctly plugged into the low side. Leaks are the most common problem associated with the air conditioning system. How To Replace AC Low Pressure Switch: Detailed Guide You Need To Follow We spend a lot of our time in the car. Ford F-150 owners have reported 86 problems related to coolant leaking (under the engine and engine cooling category). It wasn't blowing really cold so I bought a low side pressure gauge read the instructions plus the FSM and dove in. The expert gave me answers that would help a mechanic but I'm not I just want to add freon. 0 Liter Power Stroke diesel engine was used in 2003-2007 Ford Super Duty trucks and 2003-2010 Ford E-Series vans/chassis cabs, is a 32-valve pushrod V8. Also please check out the statistics and reliability analysis of Ford F-150 based on all problems reported for the F-150. Find specifications for every 2013 Ford F-150: gas mileage, engine, performance, warranty, equipment and more. It's going to be summer soon, and in many parts of the world, things are going to be heating up. Find New Air Conditioning Hose Assembly including liquid line, suction discharge line, accumulator hose assemblies at low prices. Pressure-wise on the high side you're looking at over 300 psi. When compressor is not engaged pressure rises up to 75 PSI, compressor kicks on until pressure reaches about 25-27 PSI, then rises, repeat Now the line is nice and cold and all seems visually normal, but not a lick of cold air coming out in the cabin. my system was not open, Didn’t have a leak, what would the pressure reading on the hi side. by Eduardo Ruelas on. FX4 Off-Road package, black leather interior, navigation, newer 20" Ironman tires, fixed running boards, park assist sensors, rear camera, all power options, power sunroof, drop-in bed liner, downhill descent control, tow package with integrated trailer brake system, dual climate control, power sliding rear window, Sony audio system with XM Satellite, auxiliary port. per revolution with a maximum 6,000 sustained rpm range. The cause here would likely be something that upsets the engine's air/fuel mixture, such as a major vacuum leak, leaky EGR valve or unusually low fuel pressure (weak pump or faulty pressure regulator). 4 engine - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. The Compressor will cycle less and less as the system is closer to a full charge. The high-pressure liquid refrigerant flows from the receiver-dryer through the expansion valve, where it is allowed to expand. I plugged it in to the low pressure side, even made sure it was the low pressure side by tracing it out, and the gage read 130psi. Before recharging, I googled 'r134a pressure chart', and found the following: At the time, it was 82F in my garage, so I was expecting to end up in the middle of the range (both low- and high-pressure) for the 80F row 45psi for low, and about 190psi for the high side. It's called "Pressure/temperature saturation" This chart shows the pressure/temp relationship for R-12 and R-134a. I rather recharge the system and see what happens. If not continue with these troubleshooting steps. SYMPTOM SUMMARY The air conditioning system is not cooling as expected. When the compressor shuts off or you turn your car off the pressures in the system will equalize between the high and low side so the low side pressure will read much higher. Although it depends on how they are installed, the quality of the power steering hoses also matters. The cap should not allow a leak. How to add freon to your 2007 Ford F-150: hook up the can of refrigerant (likely r-134a) to the low pressure port. If I decide I want to have even more efficient air conditioning and lower head pressures, the propane/isobutane mixture works better. I'm thinking I'll get it leak tested and watch the drain for the condenser. Imagine you are driving on a hot summer day but suddenly your car starts overheating and you can’t use the AC. to run the engine if the immediately. So I'm troubleshooting my non-functional A/C problem. So, let's find out why the car AC not blowing cold air after recharge. Larger Throttle Body Give your panting exhaust system the breath of life with a larger throttle body than it was built with. Is this pressure change normal when a compressor shuts off? For those who are wondering, I was pugged into the port that had the "L" cap on it so I'm assuming that I had to correctly plugged into the low side. • Never use Fuel Pressure Tester Kit on Diesel or Flex Fuel engines! • Never attach Fuel Pressure Tester to any place other than the fuel rail test port. Save on AC Hoses & Fittings with great deals at Advance Auto Parts. Air conditioning oil isn't added specifically to the compressor. The Biggest Problems With Power Stroke 6. The low pressure port for charging a 2007 Ford F150 5. P1461 Air Conditioning Pressure Sensor circuit Low Input. That’s why Walbro high-performance fuel pumps and modules are developed and built specifically to meet the demands of today’s high-pressure and high-flow engines with efficient and durable performance. Restores low RPM AC performance for around-the-town driving. On cars with carburetors (phased out through the 1980s), the most common problems include the distributor cap and rotor. you are going to find the low side pressure hose. The low pressure tubing is always a larger diameter than the high pressure line. If you find a P0300 code, it means the misfire is random and is moving around from cylinder to cylinder. Belle Tire is your one-stop shop for complete auto maintenance & service needs.