Air conditioning out

The air conditioning is not working.
Experienced mechanics share their insights in answering this question :
By far, the most common cause of this is low refrigerant. If the refrigerant is low then this will occur. This happens over time as the refrigerant will slowly leak out. A mechanic would start by checking the pressures in the system. If it is empty then it has a major leak that must be diagnosed. If it is simply low then some refrigerant would be added. If the system is full then there is an electrical issue. The most common electrical issues on this van are either a failing compressor clutch relay that needs to be replaced or the clutch itself. A voltage meter would be used to diagnose this.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

Why is my Odyssey A/C blowing hot air? If your car`s air conditioning isn`t blowing cold air at all (or it tries, then turns warm), you could have a clogged expansion valve, a faulty compressor clutch, a leak, or a malfunctioning fuse in the system.
Reasons a Honda Odyssey AC Isn`t Working. The most common reasons a Honda Odyssey ac isn`t working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. You may not realize there`s a refrigerant leak until the air conditioner stops blowing cold.
First, check your filters and coils for dirt and debris that may be impeding airflow. Once you`ve cleaned the filters and coils, run the air conditioner with just the fan so that the ice accumulation can melt off. If the AC still doesn`t blow cold air, it could be that refrigerant levels are too low.
Car AC Not Blowing Cold Air: A Bad Fuse

Find the fuse associated with the A/C blower motor. If the blower motor fuse is still in-tact, your problem is located elsewhere. If the fuse is blown, simply replacing the fuse with an identical fuse of the same amperage rating could get your system working again!

If your air conditioner is blowing out warm air, your unit`s refrigerant levels might be low. This usually indicates a refrigerant leak in your system! If that`s the case, your air conditioner will continue to run and blow out warm air, trying to reach the temperature you set on your thermostat.
Try cleaning your air conditioner`s filter and the coils to see if improving the airflow fixes the problem. If there is ice buildup, you`ll need to run the unit with just the fan in order to melt it off. If that doesn`t get the unit blowing cold air again, it could be refrigerant levels are low (see below).
One of the most common causes is a clogged air filter, which can restrict the airflow and prevent the air conditioner from cooling properly. Other causes can include a malfunctioning thermostat, a refrigerant leak, a problem with the compressor, leaking ductwork, or leaking windows.
AC Works Intermittently: When the air goes from cool to warm to cool again, you`re experiencing intermittent problems. This is often due to a clog in the system, a failed compressor or compressor clutch, a faulty condenser fan, a clog in the system, or the actuator directing airflow has failed.
empty and usually boastful talk.
Faulty fan

Your car can overheat when the AC is on, and you`re stuck in traffic or driving slowly. The problem is triggered when the cooling fan (including the cooling motor, fan clutch, or any other component that makes the cooling fan work) has a defect.

Faulty fan

Your car can overheat when the AC is on, and you`re stuck in traffic or driving slowly. The problem is triggered when the cooling fan (including the cooling motor, fan clutch, or any other component that makes the cooling fan work) has a defect.

32 Blend Door Actuators found. Fits the following Honda Odyssey Years: 2005-2010 Honda Odyssey | 5 Door EX, 5 Door EX-L, 5 Door EXL-T | KA 5AT.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Hot air mixed with cold blows from air conditioning
ANSWER : Hey there. You will most likely have to have a mechanic bypass the heater coolant lines to have this resolved. Your A/C may not be controlling the air flow inside the evaporator correctly out of the vents and may be the blend door actuator stuck in the heat position. Have the AC system diagnosed first before bypassing the heater.

Read Full Q/A … : Air conditioning out

Air conditioning is blowing hot air – car stalls when A/C is on
ANSWER : In order to diagnose all the different problems you have, I having the A/C pressures checked to see if the system is low on refrigerant from a leaking compressor or another component. The rough idle may be due to a dirty throttle body and idle control system. If you would like to have this checked for you, a certified professional from YourMechanic can come to your car’s location to inspect the A/C and rough idle in order to proceed with the proper repairs.

Read Full Q/A … : Air conditioning out

My 2003 Hyundai air conditioning works fine but often starts blowing hot air, especially when idling.
ANSWER : Hi There,
It sounds like you may have a condenser fan that may not be cooling the AC condenser properly. As you may know, the job of the AC condenser fan is to cool down the AC condenser as it generates a lot of heat during the course of its primary function, which is to convert the AC gas refrigerant into a liquid form, a process that generates a significant amount of heat. As the AC condenser fan blows cool air across the condenser, this allows the condenser to remain cool, keeping the pressure down in the AC system which helps to generate cooler air. I would suggest having a professional from YourMechanic come to your location to take a look at your vehicle.

Read Full Q/A … : Air conditioning out

Air conditioning doesn’t work – 1988 Jeep Grand Wagoneer
ANSWER : Check the fuse for the heater/AC blower motor. If the fuse is good, then either the blower motor resistor or the blower motor itself is suspect. The blower motor resistor provides for multiple speeds for the blower motor. A professional mechanic, like YourMechanic, can diagnose and replace the failing component.

Read Full Q/A … : Air conditioning out

Air conditioning blowing mildly cold air on the coldest setting, turned off/on again, now blowing cold air, should it be checked?
ANSWER : If you are getting ready for a long trip and suspect the cooling fan may be not coming on for the radiator and a/c then you should have the a/c and cooling system performanced checked before trip. Nothing worse than breaking down when out of town in a strange area.

Read Full Q/A … : Air conditioning out

air conditioner not blowing air from dash vents, but blowing air from side vents
ANSWER : A few different items can cause the air to not blow out of the dash vents. The most common are a blend door or a control switch. The best method for the AC diagnosis feature can be found in the vehicles owners manual. I recommend having your AC checked by a qualified technician, such as one from YourMechanic, to have the problem diagnosed and repaired correctly.

Read Full Q/A … : Air conditioning out

Cold mist/smoke like air comes out of the air vents when cold air is on.
ANSWER : If you are using regular outside air a/c instead of recirculated air you may be getting a large amount of outside air humidity and can cause a mist to come out of the a/c vents. You should make sure the a/c evaporator drain is cleared and drains freely or the water in the a/c cannot drain fast enough and the blower will pick up the water and blow it out the vents.

Read Full Q/A … : Air conditioning out

Air conditioning smells bad when car enables autostop feature
ANSWER : Your vehicle is new enough that I couldn’t find much information on the air conditioning system. I’m guessing your vehicle probably has a dual scroll AC compressor in which one scroll is driven off the engine and the other is electric. In order to prevent lack of cooling at idle, this design is used in hybrids and vehicle with start/stop ability. So, the lack of cooling may be due to a problem with this system. The foul smell by be result of bacteria accumulating on the AC components. Replacing the cabin filter may help with this problem somewhat. I suggest you have a trained professional diagnose your vehicle firsthand to determine the exact cause of the smell.

Read Full Q/A … : Air conditioning out