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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 A/C refrigerant has to be recharged occasionally. Add more refrigerant to your A/C 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
I have a 2004 Kia SuV. Air conditioning works ok except when I go up a hill. Then it cuts out and may or may not come back on. I the
I suspect you have a cooling system issue or low refrigerant. When you are climbing a hill, your car is experiencing increased load that produces as much a ten times more heat than if it were cruising on a flat....
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
Low and high pressures stay low regardless of rpm, even while adding more than required r134a
Hello. I would need to know more information about the type of vehicle this is to know for sure what is going on. Most of the time though, if you have low pressure on both sides it is caused by...
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
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
help to fix ac
This is most likely an AC compressor issue as they will often times make a rattling sound when they are going out. This is typically not an easy fix depending on your mechanical abilities and access to the proper tools....
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
Tried adding refrigerant and it wouldn't take any
Hello. Air conditioning systems on newer cars, trucks, and SUV's are incredibly complex. However, the issue you're describing may be caused by a high pressure or low pressure hose that is damaged or leaking. When the hose is clogged or...
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
How do I tell if my refrigeration system is faulty?
The refrigerant leak will in most cases not leave any evidence of where it leaked from. There are many possibilities in the system to leak. The evaporator in the dash is one of the major area that will leak and...
Question
Are these GM OEM Parts?
Hello. If the A/C is not functioning on your vehicle then it can be caused by any number of parts. It can be low refrigerant, a bad compressor, a fan, or any number of other things. Whatever the issue is,...
Question
Does the AC system need to be refilled with refrigerant after the cycling switch is replaced?
A lack of pressure from low refrigerant will absolutely cause a compressor clutch to not engage. If adding refrigerant at home, you make sure to buy a recharge kit that includes a gauge for the system. This is the only...
Question
A/C Compressor Turning On/Off
Hello, thanks for writing in about your Nissan Xterra. Your vehicle has a temperature thermistor and a thermo control amplifier on and in the evaporator case. This can cause the problem you are having as long as you are not...
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
Air con isnt getting cold
Hello. You likely need to [pressurize the refrigerant]https://www.yourmechanic.com/services/heating-ac-inspection) in the system properly. Unfortunately there is no way to test the system without hooking up gauges and physically testing it. If you have recently filled the system, there may be a...
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
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...

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