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Refrigerant

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Do All A/C Systems Use Refrigerant?
All air conditioning systems use refrigerant. Refrigerant dissipates heat in the air conditioning system to keep your car cool in hot weather.
How to Diagnose Your Car's Air Conditioning System
There is never a good time for your air conditioning in your car to stop working, but it typically seems to happen in the dead heat...
P2517 OBD-II Trouble Code: A/C Refrigerant Press Sensor B Circuit Low
P2517 code means the A/C refrigerant pressure sensor is out of the normal refrigerant level range, a faulty switch, wiring, or connectors.
P0533 OBD-II Trouble Code: A/C Refrigerant Pressure Sensor Circuit High Input
P0533 means the A/C refrigerant pressure is too high to safely function often due to inoperative cooling fans or too little or too much refrigerant.
P2613 OBD-II Trouble Code: A/C Refrigerant Distribution Valve Control Circuit High
P2613 means a problem with the A/C refrigerant distribution valve control circuit which causes the air conditioning to not work properly.
How to Replace an AC Accumulator
The accumulator in the air conditioning system is faulty if there is rattling inside of it or there is a moldy smell emitting from the AC system.
How to Recharge Your Car Air Conditioning
Car AC refrigerant has to be recharged occasionally. Add more refrigerant to your AC system to keep your car cool in hot weather.
How to Replace a Refrigerant Pressure Sensor
The air conditioning system has a refrigerant pressure sensor that goes bad when the air conditioning does not work or only works intermittently.
How to Replace an Air Conditioner Receiver Drier
The AC receiver/drier is stores and dries refrigerant. This component should be replaced if too much water enters the system or if leaks are found.
How Does a Car's Air Conditioning Work?
All across North America, a climate change occurs every year. The cooler spring temperatures give way to warmer weather. In some areas this lasts for two months, and in others it lasts...

Related questions

Question
Ac blowing hot air. 2011 Chevy Equinox
Hello. Thanks for writing in about your 2011 Chevrolet Equinox. An AC that blows hot air can be caused by a few things. If the vehicle used low cold air, but over time began to blow warm, it may be...
Question
Car AC - 2016 Hyundai I20
Hey there. This model seems to have received the least-effective AC of any of the Hyundai models in your market. Whether it's the too-small engine, vents that only help the front seat passengers, and so on. Start with having a...
Question
A/C problem - 2007 Honda Civic
Hello. It is possible to damage the compressor by introducing liquid refrigerant. The compressor is designed to compress vapor or gas, not liquids which indeed are not compressible. If your system is not working right now, a possibility is you...
Question
My A/C only blows cold on recirculate
Hello. You will always get colder air when on recirculate. When taking in the outside air the A/C system will be able to drop the temperature coming in by about 20 to 30 degrees. This means if the outside air...
Question
Q: Ac not cold
Quite often, issues with maintaining cold air flow with an air conditioner are due to a commonly overlooked issue - charging AC refrigerant. Although most vehicles (like your Toyota 4-Runner) have a closed-loop AC, when a leak occurs and...
Question
AC clutch fan relationship
The fan is kinda related, in that it is needed and commanded by the AC system to help cool the hot condenser. Its electrical circuit is separate from the AC electrical circuits. Definitely check the fuses first, then check...
Question
No cooling, advised changing compressor. System is 3 years old - should it go bad so quickly ?
Unfortunately it is not unheard of for R134 converted vehicles to go through compressors more frequently. R134 requires higher running pressures than R12 did. Two things to make sure of this time around for longer compressor life. Make sure...
Question
AIR CONDITIONER IS BLOWING HOT AIR. Does this mean its the compressor necessarily?
Hello. I will be glad to help you with your Murano. A common cause of a "no cooling" condition is the system is low on refrigerant, however, inasmuch as your car is only 6 years old, if the refrigerant level...
Question
Hold button flashing, no a/c,and temp gauge not functioning
Hello. This can be caused by a few different things. Most of the time it is caused by low refrigerant in the system, but I have seen a lot of these switches fail as well as the pressure switches in...
Question
The AC in my truck isn't working - 2005 Ford F-150
Your a/c should of cycled out at 24 psi on the low side and you should not let it get to zero. The a/c cycling switch will need to be replaced first then the system rechecked. You will find the...
Question
AC is not blowing cold air - 2010 Buick Enclave
Hello and thank you for contacting YourMechanic. The noise you are hearing is the serpentine belt burning on the A/C clutch pulley from the A/C compressor being locked up. Open the hood and with a flashlight look at the A/C...
Question
Should I replace the AC pressure switch?
Hi there. Has the system been charged recently? If so, there could be too much refrigerant in the system causing the pressure valve to vent the excess pressure; the high pressure sensor is there to prevent catastrophic system failure and...
Question
Do I need to keep refrigerant in my A/C compressor during winter months
The refrigerant inside the compressor has nothing to do with the compressor pulley turning freely when the compressor is not engaged. If the pulley is not turning free then the bearing inside the pulley will need to be replaced. If...
Question
Leaking clear but oily fluid when AC is running. It is located through the front end under the hood (by the aluminum cover insulation in front)
Hello. From what you describe, it would appear that your vehicle may possibly have a refrigerant leak in the AC system. I would carefully inspect the area where the fluid is coming from to see if you can figure out...
Question
AC Thermostat
Hi there. Check the thermostat on the air conditioning system and see if its freezing up again by shutting off the vehicle and letting it sit for about 30 minutes. If you see frost on the evaporator, then the system...
Question
How much A/C refrigerant does a 2007 Lexus GS350 takes
The system hold 1.0 lbs of refrigerant for the air conditioner. Remember if you lost oil out of leak then the system oil total is 4.5 oz. You may need to add a couple oz of oil also. The system...
Question
Air conditioning blowing warm air suddenly.
Hello, thank you for writing in. An air conditioner that is blowing warm is typically an issue with low refrigerant pressure. This can be due to a sudden leak, or it can be due to a failed A/C compressor. The...
Question
Would my 2009 Ford Taurus X need two cans of refrigerant to fully charge my AC?
Hello, thank you for writing in. Most vehicles that need recharging take less than one can to fill their system. If you are having trouble pressurizing, you may have a leak. Not all cans are made equal, and you want...
Question
2003 jeep grand cherokee ac low side pressure too high changed expansion valve, dryer and compressor no change
Hello, thank you for writing in. With the amount of work done on the air conditioning system up to this point, you may have introduced air into the system. Make sure the refrigerant is properly cycled out and recharged, rather...
Question
My 2004 Acura TL is not blowing cold air. I have gotten a new A/C compressor as well just last year. It started acting up in January of 2017.
Hi there. The air conditioning system can have many things that could contribute to a heat cycle condition. Check the following conditions to find the source of heating issue: Check The condenser for any dirt or plugged up vent...

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