Please help... AC needs to be fixed.

[AnotherCoupe]

Allright the heat has gotten to much to handle. The AC has got to be fixed soon. Now the heat works along with the de-froster, and when I turn the AC on the blower does work. Even though the blower blows it only blows hot air. For some reason it does not turn the compressor on. My question is, is there some kind of relay or switch that can be replaced to actually get power to he compressor, and if so where would I find this switch. I thought it wouldnt be a problem to make it through the summer, but it is just to damn hot. ALL help and comments would be GREATLY appreaciated believe me. Thanks to you all

[AnotherCoupe]

TTT

[trbstang]

OK, more than likely you are low on freon, and the pressure switch is preventing the compressor from cycling to keep from breaking it.

You can remove the wiring plug on the accumulator/dryer located by the passenger side firewall (the tank looking thing). Place a jumper wire across the connections in the plug. If the compressor turns on with the AC switch on, either the pressure switch is bad, or more likely, the system is low on freon. If it immediately starts blowing cold air, then it may be the switch. If not, you are low on freon, and you will have to have it checked and fix the leaks – most likely the O ring seals in all the lines, they have a tendency to dry out if you do not use the AC at least once a month or so to keep the lubricant circulating.

DO NOT run the AC with the jumper wire in place for any longer than to test it, or compressor death will occur if it does not get lubricant.

If you have leaks and once you have found them, you have a choice of how you want to refill it, R12 or R134a. R12 was standard on the 88 models, but it is EXPENSIVE and can only be installed by a qualified shop that will charge you A LOT for it. Expect to pay $250-300 just for the freon, 3-4 little cans of it, plus labor for the other stuff you have to replace. The alternative is to convert to R143a which is used in the newer cars. It does not cool quite as well as R-12, but you can buy it at Walmart for like $5.00 a can. A shop can convert it for you, or you can do it yourself if you have some skills and a few AC tools. Check out www.stangnet.com and do a search on R134a

Here is some info. Jrichker on stangnet has a lot of info on the conversion:

http://jrichker.stangnet.com/Mustang_tech/R134a_conversion/R134a_conversion.htm

Also check with Whitestang on westsidemustangs.com, he is an AC tech.

Good luck!

[Shaggy]

I personally like to use the r-12 "drop in" replacement it is roughly the same price as 134 but without a conversion only drawback is you need an EPA 609 license to buy it.

PS ask grass how he likes his ac.