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air conditioning

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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.
How to Troubleshoot a Surge Caused by Car Air Conditioning
Car air conditioning can cause a surge in the car engine if belt have slipped, the throttle body is faulty, or the idle control valve needs replacing.
How to Replace an Air Conditioning Expansion Valve (Orifice Tube)
Car air conditioning systems need the expansion valve, or orifice tube, replaced if the AC is blowing warm air or the AC system is broken.
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.
P0539 OBD-II Trouble Code: A/C Evaporator Temperature Sensor Circuit Intermittent
P0539 means the A/C evaporator temperature sensor has a too high/low voltage signal, usually caused by a faulty evaporator temperature sensor.
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 Diagnose a Broken Car Heater
A working car heater will keep you warm and defrost your car. A failing radiator, thermostat, or heater core can cause your heating system to fail.
How to Diagnose an Inoperative Air Conditioning System Faster and Easier
Automotive technicians diagnose an inoperative air conditioning system with a digital scanner, physical inspection, and under the hood examination.
Should I Get an EPA Technician Certification?
Automotive technician jobs often require EPA technician certification for mechanics, so you can make repairs on automotive air conditioning systems.
How to Get an EPA License as an Automotive Technician
Automotive technician jobs require an EPA certification to learn how about the environment while repairing automotive air conditioning systems.
How to Replace an AC Clutch Cycling Switch
An AC clutch cycling switch meters low side AC pressure. This switch helps the AC system maintain proper cabin and evaporator temperatures.
How to Replace an Evaporator Temperature Sensor (Switch)
The air conditioning system has an evaporator temperature sensor that fails when there is no cold air or the air conditioning is inconsistent.
How Does a Car Air Conditioning System Work?
Auto air conditioners serve well on hot summer days to make driving more pleasant by cooling the air and removing excess moisture in the car.
How to Get an EPA Technician Certification
The EPA (Environmental Protection Agency) technician certification program educates people who wish to repair automotive air conditioning systems.
How to Replace an AC Pressure Switch
The AC pressure switch protects the AC system from pressure that's too high or low. Common signs of failure include a bad compressor or lack of AC.
How to Clean Evaporator Drain Tubes
The air conditioning system on a car has evaporator drain tubes than need cleaning if there is dirty air in the car or it is not blowing consistently.
How to Replace a Car Air Conditioning (AC) Compressor
If the AC compressor fails, it can cause the air conditioning system not to work. This article covers how to locate, remove, and install a compressor.
How to Replace a Heater Blower Motor Switch or Relay
The motor switch on your heater and air conditioning goes bad when the switch gets stuck in certain positions or will not budge at all.
How to Replace an Air Conditioning Belt
Replacing an AC belt can be challenging, as you have to locate specific parts in the car in order to do so, and use proper tools to complete the task.
How to Replace a Car Air Conditioning (AC) Low Pressure Hose
Car air conditioning (AC) low pressure hoses carry refrigerant back into the compressor to keep providing cold air in a closed loop system.

Related questions

Question
White smoke coming from A/C coolant is low?
If you are referring to "smoke" coming from the dash vents when the a/c system is running, that is simply water vapor. The refrigerant is contained in a sealed system, although not quite as well sealed as a home or...
Question
Air conditioner condensor bad 1995 Buick Park Avenue
Hi - if your air conditioner condenser (or compressor) have failed, you can continue to use the standard serpentine belt as long as the compressor is not engaged. This can be accomplished most simply by unplugging the wire going to...
Question
A/C control messed up.
The system is controlled electronically and consequently the controller is a possibility. But, to condemn the controller, there is a long sequence of diagnostic steps (from the Factory Service Manual) that have to be performed. Typically, in diagnostics of this...
Question
A/C problem
There are innumerable things that can go wrong with the A/C system and so the best thing to do is request an air conditioning system inspection and the responding certified mechanic will get this resolved for you. The possibilities that...
Question
How much pag 46 oil goes in a new condenser for 2005 Honda Accord?
Hi there. You will need to add 1 ounce of Pag 46 oil to the condenser. Also if you are just replacing the condenser, I recommend replacing the receiver dryer as well for excessive moisture in the system. The system...
Question
Check engine light and the engine is making a humming noise.
The humming noise could be the air filter being dirty, the drive belt slipping, or the air conditioning clutch is slipping. It is safe to drive your vehicle to the appointment as long as there is no smells or loud...
Question
AC Evaporator smoke test 1998 Lincoln Navigator
Hello - unfortunately, AC leak diagnosis is not a service YourMechanic offers at this time. Thanks for thinking of us however!
Question
Where do you hook up to charge AC on97e420benz and where is it located? 1997 Mercedes E420
Hello - the AC "charge port" - which is the low pressure port - is on the driver side of the engine compartment, in-between the ABS pump and the engine. The port has a black or dark blue plastic cap,...
Question
AC not getting cold
In many cases with new cars, a low refrigerant charge can cause your symptoms. You must visit a repair facility or hire a technician certified for working with the substances found in the air conditioning system. The trained professional will...
Question
There is a hole in the heater / ac housing how do I find out cost
Hello, and thank you for writing in. Unfortunately without knowing the make and model of your vehicle there is no way to know what kind of labor time or parts we are looking at working with. With that being said,...
Question
Air conditioner makes clicking sound when truck turns on, low air pressure unless max AC is used
When the engine turns on, if the A/C switch is off, the compressor clutch is not engaged so the only "noise" should be from the compressor pulley freewheeling. If the air flow is too low at the lower blower speeds,...
Question
air conditioning is not working.
The Fixed Orifice Tube (FOT) for your vehicle should be the same for a Dodge and Chevrolet. The receiver dryer is molded onto the condenser, however, I recommend replacing the receiver dryer and the condenser as a unit rather than...
Question
Can the ac compressor be disconnected and noise go away
The a/c compressor cannot be permanently removed because the serpentine belt powers all accessories, including the compressor, in one "circuit". If you were to take the compressor out you won't be able to install the serpentine belt because a key...
Question
Jerking while driving..? 1997 Grand Jeep Cherokee
Hi there - the fact that the vehicle has this stumbling problem at the same speed (more or less) repeatedly suggests things that are dependent on that speed. These include the torque converter locking up (or trying to), or a...
Question
Air conditioning and heater will turn on sometimes.
Check the wiring from the motor switch to the a/c and heating selection. Either the wiring is loose and is moving around causing the system to not operate properly or the switch has failed. If you need further assistance with...
Question
Does non-climate control car AC cut-in & cut-off automatically?
A/C systems that used fixed displacement compressors will cycle on and off (the compressor that is) depending on cooling demand. If you have a variable displacement compressor in your vehicle, though, the compressor may hardly ever cycle simply because the...
Question
Smoke coming out of the vents into the cabin compartment.
Hi there. The green ooze that you saw was indeed coolant. The issue could be the heater core hoses or heater control valve is leaking coolant and the ventilation system on your air conditioning system to the open air outside...
Question
Air conditioning not working.
There are innumerable things that can go wrong with the A/C system and so the best thing to do is request an air conditioning system inspection and the responding certified mechanic will get this resolved for you. The most likely...
Question
2008 Mazda Tribute condenser issue.
The condenser on your vehicle is manufacture specific. Now, the years 2001 - 2004 are the same but in 2005 all years had different models of condensers. I say that if the ports are the same, the dimensions are the...
Question
In my 2008 LR3 car every new ac compressor gets burnt or blown off when fixed. I have changed the condenser and the coil but the s
The fastest way to get to the bottom of this is to request an air conditioning system inspection. The cause depends on which component is failing. If it is the a/c clutch, then yes the cause could be electrical and/or...

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