Signs Of A Bad Automotive Air Conditioner


A broken air conditioner in your automobile gets put at the bottom of the “to-do” list all winter long. As we move into another warm, Texas summer, however, suddenly having a car air conditioner that works – and works WELL – is of the utmost importance. Who wants to arrive at a meeting, the mall, or a friend’s house sweating and flushed by stale, hot car air?

Common Faulty A/C Symptoms

Generally, auto air conditioners are fast, easy and inexpensive to fix. Most car air conditioning problems are coolant-related, and may often be as simple as getting a coolant flush, refill or fixed leak. Here are a few of the problems most commonly found in auto air conditioners:

Coolant and/or Refrigerant Leaks

This generally applies to older, less computerized vehicles. Refrigerant can run out on its own over the course of time, or leaks may have developed in the car’s AC compressor or one of its hoses. If your vehicle has never had a coolant flush or refill and it’s pushing 150,000 miles or more, it’s probably time.

Noisy AC Compressor

Noises that occur when your car’s AC is turned on can come from minor engine noises or hoses, but they could also be symptoms of problems with the compressor. If the problem is the AC compressor, it will likely have to be replaced.

Fluctuating Temperatures

When a car’s AC blows out air with sporadic temperatures, it’s often likely that moisture is building up in one of the hoses or assemblies, causing ice to accumulate and clog. Removing ice from a car’s air conditioning assembly is a short and easy procedure.

Faulty Car Electrical System

A weak car battery can cause your auto air conditioner to function weakly or not at all. Car batteries need to have enough voltage to trigger the AC compressor, and while it may be strong enough to run the rest of your car, it may still be too weak to run your car’s air conditioning.

Bacteria Buildup

Funky smells emanating from your car’s air conditioning vents are likely caused by a bacteria buildup in the evaporator. Good auto mechanics will have the proper tools to flush the evaporator out quickly and without much cost.

If one of these symptoms applies to your car’s air conditioning system, it’s probably time to have it inspected by a mechanic. Caught early, most auto air conditioning problems are fairly easy and inexpensive to fix.

This entry was posted in Air Conditioning, General Maintenance and tagged , , , , , , , , , , , , , , , . Bookmark the permalink.

4 Responses to Signs Of A Bad Automotive Air Conditioner

  1. Kylie Dotts says:

    I didn’t realize that moisture in one of the hoses could cause a fluctuation in the temperature of air in your car. We are actually experiencing something pretty similar in one of our older cars. It’s good to know that we have a broken A/C in our car and should get that looked at. There was a family trip we were planning on doing soon so it’s good to know that there’s a problem that can be fixed before we go.

  2. This is some great information, and I appreciate your point that a faulty car electrical system can cause problems for the air conditioner. My car’s AC has been having some problems running, and if it does work, it’s usually really weak. I’ll definitely look into having the battery checked to see if the problem is a lack of electricity. Thanks for the great post!

  3. Grace Turner says:

    For some reason I never associated weak Air conditioning in my car to a weak battery. Growing up my car’s AC was always really weak. Now I know it was probably just because the battery was really crummy. We still have that old car and my sister complains about the AC not being very good, I’ll tell my parents that maybe they should just replace the battery! If it still isn’t the best after we change the battery what should we do?

  4. Anthony D. says:

    Some problems are occurred in the air conditioner, so make use of effective air conditioner and check it in daily manner. General maintenance is important to keep it as long time in car.

Leave a Reply

Your email address will not be published. Required fields are marked *