ml> the lines, the condensor and the compressor are the three main parts...
ml> i've seen where the condensor has had to be replaced a few times but most
ml> of the time it is either a leak in the lines or the compressor... you can
ml> try adding coolant fluid (it isn't freon any more) with the leak dye and
ml> use a black light to see if there are any leaks... the compressor, if it
ml> is bad, is generally the most expensive part...

Back when I had an A/C leak in the Monte Carlo, every season I would add more
R-134A to the system.  Like all leaks, they never get better - only get worse.
I found myself adding R-134A every few months.  

I tried all the black light tests to try and find the leak, but was unable to
locate it.  I ended up taking it to the shop, since I wouldn't have been able
to properly evacuate and recharge the system once it was opened up, anyway.

It took them a bit, but they found the leak in the condensor.  It was really
tough to see since you can't really get a good look at that area in my car
since it backs to the radiator and it was leaking on the radiator side.  

Once that was replaced, all has been well since.  It stays super cold.  

No A/C repairs are really cheap (other than to keep adding R-134A), but the
worst one that can happen is if the compressor fails in a way that throws junk
in the lines.  Then you have real issues.  Fortunately, that doesn't happen
very often.

- Mark

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