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Car parts & accessories | 04.07.2013 - 13:13

A 5 step approach to self-Auto air conditioning repair

A broken car air conditioning can lead to some serous sweltering, if you keep that hanging for a really long time.
Auto Air Conditioning
Image Credit : manutencaoautomotiva.blogspot.com

A broken car air conditioning can lead to some serous sweltering, if you keep that hanging for a really long time. However, before you attempt to repair, it’s wise to know where and how the air-conditioner stands, so that you can avoid the common hassles that one faces with the repair process. It’s wise to realize auto air conditioning repair is a tedious process and your air conditioner is nothing more than a refrigerator that is backed by an electronic layout which is exclusively designed to keep the heat off from inside the car. For any layman who attempts an auto air conditioning repair, here’s what will help one to get a head start.


Get the basics right


This is by all means the first step for anyone to get down there and work round a little bit to set  it right for the repair process to begin. Getting familiar with the equipment and the surrounding environ that you are handling is very important for one to come out fine with the process of auto air conditioning repair.


The Compressor is the unit which is responsible for the compression and the circulation of the refrigerant within the system. The next thing you need to know about is the refrigerant itself which takes a different stance from car to car. On all modern day cars, R-134a is what they use in case of a refrigerant instead of the old r-12 which is now hugely pricey and is also a little hard to find. Moreover, as per the rules of the automobile industry, one needs to have a license to use r-12 in air cooling systems which definitely makes it a little unpopular. Next comes the condenser which works to change the phase for the refrigerant as it moves towards being liquid from gas and works its way to move the heat out of the car. Then there is the expansion valve, the evaporator and the dryer which makes the auto air conditioning system complete.


Auto air conditioning repair-A 5 step "Fix-it-yourself" guide


  1. Check for any R-134a leaks which are again not very easy to spot until you pull things away from each other. Fluorescent dyes are perhaps the first hand source to spot any leaks in the system. In case, there is a serious leak, the system will fail to load any pressure. Make sure to check the PSI level within the low sided valve that is there.
  2. Start the car. Pop up the hood and take a closer look to figure out something that looks like a pump fitted with a rubber & steel hoses. There is a pulley on the front of the compressor as well. Turn on the ac and put the blower n too. Check whether the pulley is turning and the compressors clutch is being engaged. Any negative indication can be a bad fuse or a block in the way of the refrigerant trying to move all around the stem.
  3. If the system begins to cool after you have replaced the fuses, but it fails to cool on an optimum note then it’s time to boost up the refrigerant. One can easily get a refill kit from any automobile store in the market.
  4. Sometimes bad switches, broken wires or a fan belt poses a block in the way of auto air conditioning repair and hence it needs to be replaced as fast as possible.
  5. Never attempt to overfill the refrigerant with the hope of boosting up the air conditioners performance because it does exactly the reverse if you overfill it and can significantly upset the process of auto air conditioning repair.
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