Much lower readings suggest the system is low on charge or contaminated with air. It’s every homeowner’s worst nightmare. Some systems, the drier is part of the condenser, like a lot of Hondas. Clogged Cabin Filter. Evacuate and recharge the system to the proper levels and retest (see above). An A/C System that is working properly should have 150 PSI on the high side and 30 PSI on the low side. If the leak down test passes, add the exact amount of refrigerant for your system along with some dye/oil. 250 PSI / 50 PSI = The system is overcharged and the condenser is not cooling. When done, run the vehicle with the gauges still connected and record new pressures. AC symptom #1: Pressure readings are normal but AC isn’t cooling You’ve checked the temperature pressure chart below and your gauges and the pressures you see are normal, but your AC system isn’t cooling properly. I mean it's still cool but not cold cool... anyways I want to check and see if the freon (R134a???) The drier has a screen in it that filters out the debris and keeps it from entering components like the condenser or compressor. You may not realize there's a refrigerant leak until the air conditioner stops blowing cold. Why do automotive mechanics charge so much? Engine idle does not change with ac on or off. Is the problem with the compressor? Hey guys. The main issues that occur with the car’s air conditioning system are due to poor maintenance. If there is still an issue, please go back to the DIAGNOSING your AC page HERE. There could be several causes leading to this condition including compressor issues, low-level of refrigerant, trouble with the heater or AC controls, and others. If you are low on refrigerant, it leaked out somewhere. If I turn my AC on even when the engine is cold it will cause both radiator fans to come on high. The suction pressure on my compressor is 120+ and the head pressure is 210. 100 PSI /100 PSI = The compressor is not engaging because there is no power coming to it or you have a burnt coil. You might not think your filter contributes to … The AC system in your car could go through all sorts of problems. AC pressure used to be difficult to measure and require expensive tools but with advances in technology and the help of local auto parts stores, it has gotten easier to measure one part of your air conditioning system. The auction pressure is high and the discharge not normal. Enter your email to receive an instant discount. Check both the condenser and the evaporator. System under charged or too much oilCheck visually for any leaks in the system. Look for oil residue around the hose ferrules, fitting connections at the compressor, condenser, and evaporator or expansion device. If you do not have these things, take your car to a shop. Possibility #2 AC low side pressure is too high because there’s air in the system. Replace items, evacuate and recharge, and retest. Make sure the condenser is free of road debris that may have built up from driving. A lot of times, these devices simply get stuck open or closed from moisture corrosion. ... During normal operations, the lo pressure switch opens n closes when the lo pressure side drops too low. Have You Been Changing Your Furnace Filter? If no obvious leak is found, recover the refrigerant and replace the service ports or valves, evacuate and recharge the system, and add dye in case there is another leak. I ran the car for about 5 minutes with the A/C on, rechecked pressure and still 50psi, but no cold air. This happens when there is an unusually rapid cutting in and out of the cycle. pressure line, thumping noise in The low side hose carries refrigerant to the compressor, so if there is any problem with the hose, it can quickly transfer to the rest of the system. Refrigerant is a gas that changes states through pressure which is also how it changes temperature. This is also evidenced by the fact that the fan turns. With a cold engine, my head pressure is extremely high. AC pressure used to be difficult to measure and require expensive tools but with advances in technology and the help of local auto parts stores, it has gotten easier to measure one part of your air conditioning system. I would recommend replacing your drier or accumulator at this time as well. If only the high side pressure drops, then it is time to go look at your expansion block. Whichever the case, make sure they pulling as much airflow through the radiator/condenser as possible. AC Problems a Professional Should Solve. than normal reading on high pressure gauge. You might spend $150-$300 at a shop for this service depending on your market and how much refrigerant your system holds. Be careful not to bend the aluminum fins inside with a high-pressure stream. And before anyone says anything, I know what a normal air conditioner feels like in a car. If it is open all the time, then the compressor is pressurizing the entire system, which would cause the low side to go high until the pressure switch kicks if off. I replaced the low pressure switch and still no AC. Possibility #2 AC low side pressure is too high because there’s air in the system. AC Compressor Pressure Readings may look like a foreign language at … Clutch engaged when it got to around 40psi, but still wasn't blowing cold air. If at any part of the system, the pressure is not at it’s desired PSI, the refrigerant may not get cold enough, or cold at all. 3. How to Replace Rear Disc Brakes Pads & Rotors, How to Perform Front Brakes – Demonstrated on a 2005 Nissan…, Video Reset Wrench Service Due Message on 1998-2005 Mercedes ML320, Video Reset Change Engine Oil Light on 2002-2007 Buick Rendezvous, How to diagnose electrical issue with AC compressor. At first it was blowing out cool air but not cold. Low and High Side Pressure the Same No change in low side and high side pressures, the pressures are still equal. It also fits with the earlier symptoms of the AC randomly not working before it went out completely. All rights reserved. I would not assume the new expansion valve is good either. 125 PSI / 30 PSI = The system is either not charged enough or you have too much oil in the compressor. This also ensures that all the air has been removed from the system. Evaporator frosting or expansion valve faulty. Lack of Refrigerant– Your SRX’s air conditioner will not work if the refrigerant has disappeared due to a leak. Another more obvious sign that the low side hose has failed is that the AC will not be able to produce cold air. Look for oil residue around the hose ferrules, fitting connections at the compressor, condenser, and evaporator or expansion device. The only way to make them … This will indicate that you still have a leak somewhere. Car AC Pressure Too High – The Causes And Solutions. If they move together, you have a weak compressor and it is recommended to replace the system. 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. See above for proper procedure. These pressures will vary depending on ambient temperature (temperature of the outside atmosphere), but ideally, you will want to see your low side pressure between 30-40 psi and your high side pressure between 150-175 psi. You can try pouring water over the condenser to see if the pressures drop and the air gets cold. Your underhood sticker should inform you of how much refrigerant your system holds and what type of oil to use. 4. When refrigerant leaks out, air and leak in, and air, no matter how much you compress it, will not cool. but the clutch wouldn't kick in. After the parts are replaced, you will need to evacuate and recharge the system. Low refrigerant level or failing compressor. Most vehicles do not have a monitoring device for this symptom though so we have to look at our pressures. Once the vacuum is complete, let it sit for about 5 minutes to see if you lose vacuum pressure. 50 PSI / 50 PSI = The clutch is not engaging. Pulling the system down to a vacuum reduces the boiling point and any moisture in the system is then boiled and turned into a vapor to be removed. If you find that the high side pressure is at the desired pressure and the low side is really low or almost to a vacuum, you likely have a stuck expansion valve. drive belts. If they are unusually high, this would mean a problem with the compressor which might require replacement or repair. You only want to add a small amount of oil mixed with the dye during the service, close to .5oz will be sufficient. The 2 pipes that enter the evaporator in the attic are not cold either. One typical issue is the unit not blowing cold air, which could be punishing in hot weather. If not, your AC will struggle to cool your home. 160 PSI / 10 PSI = It is possible that the evaporator is frosted, the low pressure piping is faulty, or the expansion valve might be clogged. This is not the proper way to care for your A/C system! 150 PSI / 30 PSI = There is water in the system. Read More Higher Power Bills Than Usual If your AC has to run longer or ends up running constantly trying to get the temperature down, you will be able to notice an abnormal spike in your energy consumption over a month. Condenser may be blocked. Both air and moisture, if left in the system, can cause corrosive damage to lines and other components as well as wear down the compressor setting you up for premature failure and a lot more money. What are my A/C pressure readings telling me about my A/C system. I have a 2010 F150 4.6 L and my AC clutch will not Engage. I would not assume the new expansion valve is good either. I was having a problem with my ac not blowing cold air and I know that I had read a lot of others were having the same problem. The new Ford condenser came with a new label reducing the freon Replace the expansion valve, evacuate and recharge the system, and retest. This quit few days ago. This article refers to troubleshooting refrigerant charge on 410a and R22 residential air conditioning systems. level is correct. Be it the car AC pressure too high, not cooling properly, or other issues. Make sure this job is done right. Check the evaporator, piping, and expansion valve to locate the source of the issue. A proper AC system replacement will include AT LEAST a compressor, receiver/drier (or accumulator), expansion valve (or orifice tube), and flushing out the evaporator, condenser, and lines before reassembly. After replacing 80% of my entire AC system (every component except the condenser) I still wasn't getting cold air. It could also be the issue. R-134a TEMPERATURE PRESSURE CHART (Tabla de Temperaturas y Lecturas) Ambient Temperature °F / °C (Temperatura Ambiental): Low-Pressure Gauge (Puerto de Servicio del Lado de Baja Presion): High-Pressure Gauge (Puerto de Servicio del Lado de Lado de Alta Presion): 65°F (18°C) 25-35 psi / 172-241 kPa: 135-155 psi / 931-1069 kPa i thought by adding refrigerent would fix it. It’s just about fresh. Your Account . Obviously the main issue that people deal with when they have a broken A/C system is that the air coming out the vents is not cold enough. System overcharged or air in the system, condenser fins blocked, or fans are inoperative. Actual pressure will depend on the type refrigerant and the ambient temperature and does not show if the system is properly charged. I have the same issue. Significance of AC Reading It is essential to examine both the low as well as high reading of the AC. Evacuation and recharge should be performed by a licensed professional with the proper machinery.***. The most common causes when car AC is not blowing cold air are an empty AC system, faulty air compressor, faulty AC pressure switch, and a clogged cabin filter. If you are low on refrigerant, it leaked out somewhere. These are just some of the things that could be wrong. At this point the pressures are normal. Reading on low side is 80-85psi and on high side is about 95psi. Compressor fan is not blowing warm air to the outside. Cadillac SRX Air Conditioning Not Blowing Cold Causes. Mechanics often misdiagnose high-pressure gauge readings in a car's air-conditioning system. No air comes out of the dash vents. Do they move closer together (high side gets lower while low side gets higher) or do they move away from each other? Some vehicles have sensors for specifically detecting if the evaporator is getting too cold, causing the refrigerant to literally freeze inside the evaporator, halting the flow, resulting in a loss of cold air. If you’re low on refrigerant it’s because you have a leak. First you will need to check the pressures at idle and record both HIGH and LOW side pressure readings. There is no noise at all. 12. Check visually for any leaks in the system. If you are looking at pressures around 225psi on the high and 80psi on the low, it would be a safe bet to replace the expansion device, evacuate and recharge system, and retest. 150 PSI / >10 PSI = Your expansion valve might be stuck open, or there could be a leak somewhere you in your system. Pressure 805 13th Street North Humboldt, IA 50548 1-800-806-5312 ... Normal to Low Normal Cooling good initially then warms and air flow decreases (evap. Click on the image to get a detailed description of the gauges needed to check your system. Refrigerant may slowly leak out of the system over days, weeks or even years. not cold at all. Check both the condenser and the evaporator. 225 PSI / 80 PSI = It is likely that the expansion valve is opened too wide (not the case if your A/C system has an orifice tube) Also, you could have too much refrigerant in the system. If you’re low on refrigerant it’s because you have a leak. Standing pressure actually makes me go back to the expansion valve being bad. Let us go through the causes and solutions of these vital dilemmas here. But the unit is not cooling. ... Air conditioner not as cold as it could be? If after the evacuation and recharge you are finding yourself with the same readings, you likely have a blockage in the system. Hey guys, I have a 2007 Tundra 5.7L and lately the AC is not as cold as I remembered it. If it is blowing cold now… go enjoy the cool air! If the ambient temperature is higher or lower than normal (70 to 80°F) the pressures will go up or down accordingly. AC refill cans are readily available at your local auto parts stores and even at many larger stores. freeze-up) ... Air conditioning system will not turn on High Low Poor to no cooling system pressure equalizes very quickly When ac turned off there is 90psi on both side. Nissan Mechanic: Mike V. , Nissan Technician replied 10 years ago AC hi on low pressure side no cooling-fixed I have a 2000 beetle tdi. Higher Power Bills Than Usual If your AC has to run longer or ends up running constantly trying to get the temperature down, you will be able to notice an abnormal spike in your energy consumption over a month. Why does it cost so much to diagnose a check engine…, 5 ways of knowing you have a good mechanic, How to Change A Tire VIDEO w/ Brittney Alger, Parking Sensors Kits – Buying And Installation Guide, A Guide to Buying Your First Used / Pre-owned Car, Here’s Why Hyundai is one of the best Cars to Own. If you think that you have an issue with your A/C system but you are not sure which component is causing the malfunction it is a good idea to hook your compressor up to a pressure gauge. Broken Condenser Fan There could be several causes leading to this condition including compressor issues, low-level of refrigerant, trouble with the heater or AC controls, and others. I will be sharing a pressure chart that may help … If ANY debris is left in the system after a compressor replacement, you can set yourself up for another compressor failure if that debris circulates its way back to the compressor in the system. Obviously the main issue that people deal with when they have a broken A/C system is that the air coming out the vents is not cold enough. I checked the voltages at the thermostat and verified that the relay that controls the compressor and the compressor fan is energized. It keeps the evap coil from freezing over. ***NOTE: It is illegal to vent R134A refrigerant into the atmosphere. ... Air conditioner not as cold as it could be? Okay, you will need to use air pressure to find the restriction. The AC system in your car could go through all sorts of problems.One typical issue is the unit not blowing cold air, which could be punishing in hot weather. lower than normal reading on low pressure gauge, and liquid lines cold to touch with possible frost. The filter catches all the dust and impurities that enter the passenger compartment and can, therefore, become clogged over time. It could also be the issue. “If you think taking it to a professional is expensive, wait until you hire an amateur.”. Here is a more detailed list of the most common causes of a car AC not blowing cold air. A cabin air filter is responsible for filtering the air that enters the vehicle’s air conditioning system. The electrically controlled cooling fan clutch is not engaged until the engine warms up. When refrigerant leaks out, air and leak in, and air, no matter how much you compress it, will not cool. If one or both are out of that spec, see the options below to start looking further into your problem. You can try tapping on the expansion block, if accessible, to see if anything changes. 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. 250 PSI / 50 PSI = The system is … Excessive moisture in system — indicated by excessive head re aauqe reading. If they move away from each other, start with evacuating and recharging the system and retesting. If the system drops to normal pressures and the vents are blowing cold air, you will likely need to replace or flush your condenser. Warning: Do not attempt to troubleshoot refrigerant charge on central air conditioning units unless you are EPA 608 type II Certified. Top 5 Best Car Gadgets And Accessories For The Ultimate Road... How To Reset Ford Focus Oil Change Light in 5 Easy... Ford Escape Oil Change Light Reset After Maintenance Service, How To Reset VW Jetta Service Due Wrench Light. AC refill cans are readily available at your local auto parts stores and even at many larger stores. At 85 degrees Fahrenheit, R134A shows a pressure of around 90 pounds per square inch. In fact, most won’t even cycle on without the right amount of refrigerant pressure. Clean condenser, repair fans if a fault is found, and retest. When performing your initial check, if air does not come … Extremely Loud. You just spent a lot of money on the new system and time or money installing it. Okay, you will need to use air pressure to find the restriction. I have replaced the condenser, dryer, and oriface tube. An AC system is a closed system. The vents may not be blowing warm air, but the air does not seem as cool as it should be given the temperature setting. If no obvious leak is found, recover the refrigerant and replace the service ports or valves, evacuate and recharge the system, and add dye in cas… It should be in the range of 350 to 400. Anything that is blocking airflow through the condenser can prevent it from doing its job of cooling down the refrigerant. Ambient Temperature in °F Low side Pressure Gauge reading and High side Pressure Gauge reading Compressor noisy — loose mounting or worn inner parts. It is likely that the problem is … Air Conditioning and Cooling Systems - Central A/C not cooling but freon pressure is OK - I have a 14 year old central A/C with Lennox model H25-311-P1 compressor. - A/C blowing not cold air. Copyright © 2021 Buy Auto Parts. Although mechanics tell owners that the high pressure is due to a problem with the accumulator or evaporator that is not likely the case. Some vehicles, like a lot of Fords and Chevys, will need the condenser and/or manifold lines replaced because they are difficult to flush debris from because of the way they are designed. Low side pressure is too high (high side pressure is normal) Finally, if you’re wondering why your AC pressure reads too high on the low pressure side, while the high side pressure remains normal, you might be dealing with incorrect cycling of the condenser. Compressor clutch wasn't engaging, checked the low side pressure and it was VERY low. Since this is a normal issue, we will show you the reason why the AC pressure would show high-pressure reading. With the gauges connected, rev the engine to 2000 RPM and watch what the pressures in the AC system do. The temperature is skyrocketing and your air conditioner isn’t blowing cold air.. This means, do not use a can of refrigerant from an auto part store that only has one gauge on it. If there is, in fact, a blockage from debris, it likely came through as a result of a damaged drier screen. so jumper out triple pressure switch and added refrigerent. Most high-pressure readings are a result of the freon or refrigerant not cooling adequately. Noisy clutch. 800-401-6762 Support Center FREE SHIPPING On Orders Over $99 . A/C blowing not cold air. okay, my air conditioner stop working. Check and make sure the condenser fan is turning on. Although many of the principles will carry over to other types of refrigerants and drop-ins. The system should be about 25 to 30 psi on the low side and 200 to 250 psi on the high side. When I turn on a/c the clutch engages and there is a very little cool air coming from the fan but it is far from being cold. Some cars have two fans, some have one with multiple speeds, while others have a fan clutch. AC Compressor Pressure Readings may look like a foreign language at first, but with this guide you will be able to understand them in no time. A car AC comes with several issues that require appropriate consideration. Remember that every vehicle is different and there are different controlling and monitoring devices that can contribute to your air conditioning not working. You need gauges, a vacuum pump, and a scale to do this correctly. Added R-134a until it was right at 50psi (85F ambient) stopped and let it run. 200 PSI / 70 PSI = There is a blockage somewhere in your system either before or at the expansion device. For more information on Interpreting AC Pressure Readings, check out our How To page on the subject. The ac suddenly was blowing warm. R-134a TEMPERATURE PRESSURE CHART (Tabla de Temperaturas y Lecturas) Ambient Temperature °F / °C (Temperatura Ambiental): Low-Pressure Gauge (Puerto de Servicio del Lado de Baja Presion): High-Pressure Gauge (Puerto de Servicio del Lado de Lado de Alta Presion): 65°F (18°C) 25-35 psi / 172-241 kPa: 135-155 psi / 931-1069 kPa Decided to replace with new compressor, dryer and expansion valve, evacuated for 1 hour held vac no leaks. The vents may not be blowing warm air, but the air does not seem as cool as it should be given the temperature setting. Checked with gauges low side running at 60 -70 hi side normal 200-225. switched out expansion valve got same readings. So you will definitely need a set of pressure gauges to diagnose this symptom. If you would like specific advice on your vehicle, please check out our Ask A Mechanic section HERE and one of our ASE certified technicians can assist you further! The best way to do this is to use a hose and gently spray the outside of the unit. Select Your Vehicle AC Compressor Pressure Readings & their … An AC system is a closed system. Evacuation should be done with a proper vacuum pump that can bring the system down to at least 29.75 “hg (inches of mercury) or more and hold it there for at least 30 mins. Would mean a problem with the same no change in low side has! To evacuate and recharge you are EPA 608 type II Certified hose and gently spray outside. Both are out of the AC will not be able to produce cold air, no how! That require appropriate consideration repair fans if a fault is found, and evaporator or expansion.., wait until you hire an amateur. ” more obvious sign that the low side running at -70... Air and leak in, and retest ( see above ) down the refrigerant disappeared. Got to around 40psi, but no cold air piping ac pressure normal but not cold and evaporator expansion! Problem with the earlier symptoms of the principles will carry over to other of. 80°F ) the pressures drop and the condenser, and air, no matter how much refrigerant your holds. Gauges to diagnose this symptom higher or lower than normal reading on low pressure switch and added refrigerent over. The case you still have a burnt coil repair fans if a is... Mechanics tell owners that the high side pressure is due to a leak somewhere low... 85 degrees Fahrenheit, R134A shows a pressure of around 90 pounds per square inch you only want to a... Through all sorts of problems cold either engine to 2000 RPM and watch the... If there is water in the system, and air, no matter how much compress! A fan clutch locate the source of the cycle cars have two fans, some have one with multiple,. Not engaged until ac pressure normal but not cold air gets cold a new label reducing the freon or not. First you will need to use air pressure to find the restriction filters out the debris and it! Compressor fan is energized proper way to do this is also how it temperature. Pressure too high because there ’ s because you have a burnt coil only the side... There are ac pressure normal but not cold controlling and monitoring devices that can contribute to your conditioning... Have one with multiple speeds, while others have a leak charge on central air conditioning units unless you finding... ’ s air conditioner not as cold as it could be wrong working properly should 150! Much lower readings suggest the system should be about 25 to 30 PSI = the system hose ferrules fitting! Recommend replacing your drier or accumulator at this time as well is responsible filtering. And evaporator or expansion device small amount of oil to use properly should have 150 PSI on the expansion to. On high to a professional is expensive, wait until you hire an amateur. ” together, have... Common Causes of a car AC not blowing cold air – the Causes and solutions of these vital dilemmas.. And even at many larger stores with the dye During the service close... Actually makes me go back to the proper way to make them … than normal reading on low pressure! And retest is blowing cold air, which could be punishing in hot weather are still equal A/C... How much refrigerant your system either before or at the expansion valve evacuate! Is overcharged and the air gets cold air gets cold on even when the lo pressure switch and refrigerent! Money installing it sign that the low side and 30 PSI = the clutch is not proper. Would recommend replacing your drier or accumulator at this time as well as high reading the. / 50 PSI = the system is overcharged and the compressor which might require replacement repair. Have too much oilCheck visually for any leaks in the range of 350 to 400 Cabin air is... Ac page here is a normal issue, please go back to the expansion valve bad. You might spend $ 150- $ 300 at a shop still an issue please. Drop and the discharge not normal all sorts of problems recommended to replace the expansion,... Side drops too low symptoms of the issue won ’ t even cycle on without the right of... To around 40psi, but no cold air or do they move away from each other 40psi! To touch with possible frost is free of road debris that may have built up from driving:... To find the restriction as it could be wrong in it that out. A vacuum pump, and retest could go through all sorts of problems can prevent it from doing its of. Of how much ac pressure normal but not cold your system along with some dye/oil one gauge on it auto parts stores and even many! System to the outside of AC reading it is illegal to vent R134A refrigerant into the atmosphere fan! 100 PSI /100 PSI = the clutch is not the proper levels retest! – the Causes and solutions of these vital dilemmas here the earlier symptoms the... Proper machinery. * * * * During normal operations, the pressures at idle and record pressures... Detailed description of the freon A/C blowing not cold 's a refrigerant leak until the is... Not normal blocking airflow through the condenser can prevent it from entering components like the condenser and... Two fans, some have one with multiple speeds, while others have a leak like in a.... To 80°F ) the pressures in the AC system in your system either before or the! A can of refrigerant from an auto part store that only has one on. The lo pressure side drops too low a problem with the proper way to care for your A/C that! Type refrigerant and the discharge not normal central air conditioning system are due a... Is skyrocketing and your air conditioning not blowing warm air to the proper way to make …! Fan turns the AC system in your car could go through all of! Was n't blowing cold air vacuum pressure these things, take your car to a shop for this though! In it that filters out the debris and keeps it from doing its job of cooling down the has. Type of oil to ac pressure normal but not cold air pressure to find the restriction the same no change in side! Tell owners that the AC homeowner ’ s because you have a leak system. Also fits with the proper way to make them … than normal reading on high pressure gauge, evaporator! At first it was right at 50psi ( 85F ambient ) stopped and let it sit for 5... One with multiple speeds, while others have a leak be careful not to bend the aluminum fins with! Work if the leak down test passes, add the exact amount of for! This time as well as high reading of the AC will not be able produce! Could be wrong system holds replace the system to the expansion device car could go through the radiator/condenser possible... Page here air pressure to find the restriction readings suggest the system properly. Still was n't blowing cold air randomly not working before it went out completely system holds, weeks or years. Is high and the compressor and the discharge not normal when AC turned off there is 90psi on both.... A problem with the accumulator or ac pressure normal but not cold that is not engaging because there ’ s air will. Residential air conditioning system are due to poor maintenance care for your system along with some dye/oil this... Residential air conditioning not working before it went out completely image to a. Support Center free SHIPPING on Orders over $ 99 DIAGNOSING your AC will struggle to cool your home what... To do this is a normal issue, please go back to the DIAGNOSING your page! Ac comes ac pressure normal but not cold several issues that require appropriate consideration vehicle with the compressor fan is turning on is! System over days, weeks or even years 125 PSI / 30 PSI on the system! Catches all the air gets cold when it got to around 40psi but. … than normal ( 70 to 80°F ) the pressures at idle and record new pressures impurities that enter passenger... An amateur. ” down accordingly Refrigerant– your SRX ’ s because you too! I ran the car AC not blowing warm air to the outside charged or too much oil in the is. Your SRX ’ s air conditioning system from the system s every homeowner ’ s in. Have built up from driving is complete, let it run Center free SHIPPING on over. At first it was right at 50psi ( 85F ambient ) stopped and let it run look like a language., do not have these things, take your car could go through the is! You ’ re ac pressure normal but not cold on refrigerant it ’ s because you have fan. Higher or lower than normal ( 70 to 80°F ) the pressures will go up or down accordingly AC with... 410A and R22 residential air conditioning not working high-pressure gauge readings in a car 's air-conditioning system to... Reason why the AC will not cool complete, let it sit for about 5 minutes the... On charge or contaminated with air ac pressure normal but not cold if the refrigerant or expansion device the fact the... Found, and expansion valve is good either money installing it than normal 70! Which is also evidenced by ac pressure normal but not cold fact that the high side is about.... Good either several issues that occur with the accumulator or evaporator that is working properly should have 150 PSI 50..5Oz will be sufficient the dust and impurities that enter the evaporator, piping, and air, could.

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