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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.
P0508 OBD-II Trouble Code: Idle Air Control System Circuit Low
P0508 code definition When this code appears and is stored in the onboard computer, it means that the idle air control system circuit is low. What the P0508 code means The...
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 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
My AC only blows hot air in my car. My car was idle for 30 min. Then the ac started blowing hot and then had a burning smell.
You should first verify the a/c system is full of refrigerant and then while running ac verify the compressor is turning on and engine cooling fan comes on also with it. If they do not then you may have a...
Question
Does my AC Condeser need to be replaced along with the Compressor?
If the compressor locks up, or has some other internal mechanical failure, there is always the possibility of debris getting into the rest of the system and causing you more trouble down the road. You can look in the high...
Question
My a/c blows warm when switched to drive. What can cause this?
Hello, thank you for writing in. There is a chance you may have a vacuum leak. You will need to check for them physically, or have a technician do so. Typically the vehicle has more power when at higher RPMs...
Question
Both pressures on ac system show high
You should first turn off a/c and see if system equalizes and then turn on system. If pressures on the high side goes too high then you have an expansion valve that is not working correctly and needs replaced. Make...
Question
I have a Acura TL 2003 my AC works when I drive and when I come to a stop and sit for a little while it gets hot,
Hello, thank you for writing in. Each individual issue needs to be handled one by one. The first step is to scan the vehicle for diagnostic codes, and see why the check engine light is on. Solve that issue if...
Question
Hi Jason. I just had my ac condenser and compressor replaced 2 weeks ago. My ac went out again and I am now being told it is the m
The manifold line is not normally replaced when compressor or the condenser is replaced unless a problem is noted. In order to replace it now you will need to get a quote from customer service to get estimate for the...
Question
I just took my 2010 Nissan Rogue to the dealership for a diagnostic, I was told my a/c compressor is bad and I also need a new dri
If the a/c compressor is binding or wobbling from bad compressor bearings then replacing the belt will not fix anything and the compressor may just tear up the new belt.
Question
Ac condensation leaks a lot of water from drainage tube outside under yukon 2005, even if I haven't driven it in a day, is this ok
You will see varying amounts of condensation draining from the a/c drain depending how much humidity is in the truck. This is normal. The larger amount you see if just an indication of how much humid air is being removed...
Question
A.c blows cold air when stopped but after driving for a few mins it makes a hissing sound and blows hot air
It could be that the evaporator is freezing up. If the air conditioner works TOO well, ice can form on the evaporator core. When that happens the AC will blow hot air until the ice melts. There is supposed to...
Question
Had ignition coil & tuneup due to car wanting to die. Still does it with Ac on..what could it b now??
If engine wants to stall when the a/c is turned on your may have a problem with the throttle body or air control valve needs cleaned or replaced. have computer tested for codes and clean and or replace idle control...
Question
does diagnostic show you what is wrong with evac
A mechanic like one from YourMechanic can diagnose the a/c system to find out what is wrong using the proper pinpoint tests and equipment to locate your a/c problem. It is a combination of test equipment and mechanical expertise that...
Question
My 2013 Mercedes benz c250 ac won't work, it blows hot air and the ac button light flashes red three times and then turns of
Hello. On this vehicle for it to be acting up like this it typically means that there is a programming issue with the HVAC unit. It is also possible that the system has a small leak if it has been...
Question
Where the orifice tube on 2013 Chrysler 200
Hello, thank you for writing in. The orifice tube is located in one of several places. For your make and model, you should be able to locate it between the condenser outlet and the evaporator inlet. It will be placed...
Question
My ac compressor quit working in my 2016 vw jetta what could be the main cause for this being brand new?
VW has seen a lot of problems with these compressors and has issued a service bulletin on some of their 2015 and 2016 cars. There is a defective regulating valve that causes compressor failure. In many cases they are performing...
Question
Chevy captiva 2014. A/C running warm. Will not recirculate. And even though I have it on face vents, it blows thru them AND bottom
Hello, thank you for writing in. The vehicle is likely having more than one issue at once. The blend doors control the flow of air through the vents and the cabin. If they are unresponsive, you may have one of...
Question
My 2001 automatic Miata idles really rough at stoplights when I run the AC, but not when it is off.
Hello, thank you for writing in. Two aspects about the issue lead me to believe the previous technician is correct. To start, the compressor is the only component that will effect the engine, as it is the part connected to...
Question
Hi, my name is Jorge from North Houston, TX, and I'd like to know the location of the Expansion Valve (Orifice Tube) for 2011 GMC
Your vehicle has an expansion valve mounted at the firewall behind the two a/c lines where they connect to the evaporator assembly. You will need to evacuate the a/c refrigerant and remove line connection and then unbolt the expansion valve....
Question
my ac compresser in my 2004 pt cruiser works then shuts off
Hello, thank you for writing in. If the compressor is cycling when it should not be, there is an issue with regulating temperature. You want to look at the pressure switch going to the compressor. If it is not to...
Question
Engine drag w/ a.c on
The a/c system has an idle up function and that should be checked. If the idle up function is not working properly, when you turn on the a/c the engine will bog down. You are also describing overall poor engine...

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