Auto A/C System Problems

Your a/c system is self contained and does not need maintenance. If the air comes out cold, you are done, and you don’t have to worry about this system. If the air comes our cool, or warm there are two possible problems with the system.

Why Doesn’t My A/C Work?

First possibility: 

The system may not have enough a/c refrigerant to enable a/c compressor to engage. Under the best of circumstances an a/c system slowly loose its refrigerant. It takes somewhere around 7 years for a perfectly good a/c system to leak enough refrigerant such that the compressor will not start when you try to get cold air. The oil which lubricates the a/c compressor floats in the refrigerant. As the refrigerant leaks out, the oil leaks out. If the compressor engaged when there was inadequate amount of refrigerant, the compressor would not be properly lubricated, and it would seize-up. To prevent this from happening, a pressure sensor prevents the a/c compressor from running when you are low on refrigerant.
On a side note, to keep the compressor lubricated in the winter, the computer turns the compressor on and off.
Also, when you turn on the “defrost,” the a/c system automatically turns on. The air first goes through the a/c coils in order to “dry-out” the air, and then the air is heated by the heating coils so that it can evaporate the condensation on the windshield.

Second possibility: 

 The system is full of refrigerant, but due to an electrical problem, the a/c compressor does not turn on. For example, you could have a bad button (on the dash), bad relay, bad fuse, bad wire, or a bad sensor.
Schedule an appointment at for Auto A/C repair