Converting AC from R12 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 07-02-2003, 02:55 PM   #1
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Default Converting AC from R12

What is involved in converting the AC from R12 to R13a. Is this something I can do or should I leave this to the pro'*? Expensive to do? 92 Bonneville SE L series
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Old 07-02-2003, 03:18 PM   #2
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A controversial subject!

You will need to capture the remaining R12, repair leaks, put a vacuum on the system, add oil, and carefully add refrigerant and oil while monitoring high and low side pressures. A vent thermometer and a large external fan for the condensor also are necessary. Many people recommend changing the accumulator/drier and also the existing o-rings.

Unless you have done A/C work before, I would leave it to a good A/C shop. That'* because damages from doing it wrong are much costlier than the retrofit.
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Old 07-02-2003, 04:11 PM   #3
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I don't think it'* that expensive, $200? Depends on what you think is expensive I guess.
Does your air work now with the R-12? If it does, just keep using it til it breaks.

That whole R-12 freon thing is one of the biggest crocks foisted on humanity. It ranks right up there with the Global Warming hysteria.
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Old 07-02-2003, 07:20 PM   #4
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Maybe we could buy you a one-way ticket to Antarctica to work on your tan, right under the hole in the ozone layer.
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Old 07-02-2003, 11:31 PM   #5
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i got every-ting you needs. Bottle says "Replaces R-12, 134a,
NO retrofiting required
Runs colder than R12
Equivalent to 510 grams
My car calls for 2.2 pounds which is 997 grams so I need about two bottles, it might be a good idea though to oil your system first (same type of can)
Each can costs 15bux Canadian, the hose thingy was 85 bux
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Old 07-03-2003, 12:38 AM   #6
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Can putting the r-134a in wrong cause the compressor to go bad? Because i recharged my system, and converted it, and i lasted a week, and it started working, and then would stop. finally it just stopped. I threw another can in, and it was cold and working. I shut off the car, took a shower, and then it was warm again. I got power going to the compressor, but it isnt kickin on. how come it kicked on when i threw another can in? and then it quit all of a sudden, after it was off for like 20 mins.

if it is the compressor, where can i find one on the internet, reasonably priced.

thanks,

Rob
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Old 07-03-2003, 02:32 AM   #7
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What are the high and low side pressures on your car, along with outside temperature? You have to take them with a big fan in front of the condenser, 2000 rpm, A/C on max.

You may have overcharged the system.
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Old 07-03-2003, 02:34 AM   #8
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can over charging wreck the compressor? or cause it not to kick on?

Rob
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Old 07-03-2003, 02:39 AM   #9
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If you overcharge it, then the compressor may try to pump liquid instead of gas, and that will destroy it. I'm not so sure that you have a compressor problem though... Best way to find out is to get some pressures.
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Old 07-03-2003, 02:41 AM   #10
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my dads friend had this gauge, and his read 60 PSI for his dodge ram, and mine read 95 PSI? am i overcharged?


Rob


I want A/C!!
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