Elite Auto Repair In Tempe Arizona

My Car’s A/C Is Not Cold. What Could be Wrong?


If your car’s air conditioning goes out on a hot summer day, your commute to work and to run errands is going to be miserable. There’s nothing quite like being stuck in a hot car in the middle of a traffic jam.

If your air conditioning isn’t blowing cold air, there are a few different things that could be wrong with it. Here are some of the most common issues and what you can do to fix them.

It Needs Recharging

The most common cause of an air conditioner not getting cold enough is that it needs to be recharged. You can recharge your refrigerant by yourself, but if you’re not comfortable doing it, one of our ASE Certified mechanics are standing by and should be able to get your cold air flowing again pretty quickly.

There’s a Freon Leak

Freon is the chemical that cools the air, so if there’s a leak in the system, it will eventually run low or run out. Todays A/C systems are very sensitive. They require a specific amount of Freon, measured in pounds, to operate correctly.

The proper way to check the system for the correct volume of Freon is with a charging machine. This device will first remove all Freon form the system then input the correct amount for proper operation.

Freon leaks may be very, very slow. If you add more Freon and lose your cold air within a few weeks, however, you may need to have the hoses and other system components checked and replaced.

The A/C Compressor May Not Engage

This problem can occur due to a variety of conditions. Failure can occur when there’s an electrical fault in your compressor’s circuit or clutch, Freon can be low or the vehicle can be overheating.

Today’s cars are computer controlled and one of the first systems that is turned off when the computer senses an engine problem is the A/C system. Usually, the malfunctioning part has to be replaced by a qualified mechanic.

The Blend Air Door is Stuck

There’s a small hatch inside your car’s ventilation system called the “blend air door”. When you turn your environmental system from heat to cold, the door should change to drawing in cold air. If it doesn’t change, it will still be drawing heat from the engine and blowing it on you! Again, this is a job for a qualified mechanic.

You Can Feel Cold Air, But It’s Not Blowing

This could mean the A/C’s fan has stopped working. It may be as simple as changing a wire, or you may need a new fan unit. Again, this isn’t something you can really change yourself, especially since it may require taking apart your car’s dashboard to reach all of the components.

Other Issues

Your A/C system is complicated, and while there are some easy fixes like adding Freon, there are also more difficult issues that only a trained and certified mechanic can fix. In a few cases, the problem is indicative of more severe issues, but usually repairing the A/C is a fairly simple job, even when a mechanic has to handle it.

Call us today and setup a diagnostic appointment. We’ll track down your issue and the most affordable solution possible!



18 responses to “My Car’s A/C Is Not Cold. What Could be Wrong?”

  1. Leon Armentrout says:

    Ac works great at engine idle. It shuts down while driving. What could it be and how can I fix it? I live in big spring Texas.

  2. Of the problems you listed here, I think that the compressor not engaging is the most important one. Even though it’s not as common, it’s a problem that if not fixed quickly, can lead to a lot of damage. Anyways, most A/C compressors operate off of the serpentine belt with the use of a clutch. Like you said, the problem with that is usually with the circuit or clutch.

  3. Eyram says:

    A/C stops cooling when the car is at standstill with engine running, it begins to cool again when the car is in motion. what could be the cause.
    sometimes it begins to cool when the engine is turned on and at standstill, but after driving for a while it stops cooling whenever i stop the car.

  4. Bryan says:

    My air conditioner was blowing cold but all of a sudden it started to blow hot air could it be possible it may just need freon

  5. Lam says:

    After 3 belts change serpentine, power steering belt and something else were changed ac stop blowing first then I found a napkin stuck inside the in cabin filter. When they shop changed 3rd belt the clicking or screeching sound stop now ac blow whatever temperature air through as strong as before but not cold. I had charged it with one 18oz r134a can about 3 wks ago before finding the napkin. Is it my clutch or bad circuit and need a new 10amp?

  6. Duane Kendall says:

    I have a 2001 Firebird and the air conditioning the pipes are cold but it only puts out like 60 degrees it won’t go no less

  7. Maria says:

    My cars AC works when the car is running all of a sudden it kind of like turns off what could it be

  8. […] Re: Help fix my A/C please! Quote: Iconic_ previously said: View Post I'm no AC expert, but I believe that's what the dealer did. I didn't explain it very well. Freon was at 30 psi low side, and 200 psi high side. (whatever that means) They charged me for 16 units of R134 at $.53 ea along with $60 in labor. Bro… That's stealing haha Have you tried or thought of trying one of those generic A/C fix article suggestions like in this article? My Car's A/C Is Not Cold. What Could be Wrong? | Elite Auto Repair […]

  9. DJ says:

    I have a 2003 dodge b1500 van with a 5.9. The ac doesn’t blow cold. The clutch engages and spins the compressor. The blower works fine. Condenser is not clogged. No leaks and freon is full. Low pressure is where it should be around 45 psi. The high pressure line is hot. There’s condensation on the expansion valve block. The blend door actuator is working. But I haven’t checked the door itself, however if I turn it to heat there is a noticeable difference in air temperature. Can you give me a list of at least the next 3 – 5 things I should test?

  10. Mark parrott says:

    Renault master. Refrigerant in system 65psi not running 30 psi running but no cold air inside vehicle

  11. Adam says:

    AC was fine, now blowing hot air. Any ideas what could be going on. Thanks

  12. Brad says:

    Ac starting off cold then switching to hot is a blend door problem. Alot of Dodge Rams have this issue including my truck

  13. Pradeep kumar kar says:

    I have purchased maruti swift vxi in the year 2013. Ac is not cooling properly. While ac is turn ON, water lekaging from dashboard. How it will rectify.

  14. Nicole says:

    My car blows air but not cool air i Recharg it but still nothing

  15. Gary says:

    I have a2006 Hyundai Sonata,I put Freon used half a can it still blows hot air what seems the problem

  16. Frank says:

    Have a ’93 Mercedes 300CE. A/C starts okay then not at all. Defrost air is hot when the thermostat is set to cold. What could it be?

  17. felix says:

    My ac was working fine till yesterday morning I was washing my car with pressure pipe, and I directly sprinkled water towards the radiator in front of the car, then later about to drive off the acc air no more as cool anymore. What could be the reason for the sudden drop?Could it be the water I splashed on it?pls I need help

  18. David K Scriven says:

    I have a 2004 jeep liberty and the air conditioning is blowing out hot air, I bought AC Freon put it in and it’s still blowing out hot air ???

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