R-12 Recharge
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, R-12 Recharge in Past Cadillac Vehicle Discussion; Hi, I am having an issue with my AC system. It blows air that is slightly cool (not cold) and ...
  1. #1
    r_2016's Avatar
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    R-12 Recharge

    Hi,

    I am having an issue with my AC system. It blows air that is slightly cool (not cold) and my service air cond light comes on intermittently. I haven't pulled the code yet, but I am thinking that it is a little low on refrigerant. If it is just low, I would like to try to find a shop that will recharge the R-12 rather than converting. I have owned the car since 2003, it worked well until I put the car in storage in 2006. Do shops that offer AC service typically also recharge R-12? I am in the Boston area. Thanks

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    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: R-12 Recharge

    Which car - I think that even some 1993's came with R134a systems.

    R-12 - - - You don't want to know its cost per pound.

    R-12 is still made overseas and can be had on the black market. U.S. R-12, from a licensed repair shop, runs (currently) about $50 per pound. it was ~$200 a pound a few years ago. I still have two 15 pound flasks of DuPont R-12 in the garage - from the late 80's.

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    basscatt's Avatar
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    Re: R-12 Recharge

    Quote Originally Posted by r_2016 View Post
    Hi,

    I am having an issue with my AC system. It blows air that is slightly cool (not cold) and my service air cond light comes on intermittently. I haven't pulled the code yet, but I am thinking that it is a little low on refrigerant. If it is just low, I would like to try to find a shop that will recharge the R-12 rather than converting. I have owned the car since 2003, it worked well until I put the car in storage in 2006. Do shops that offer AC service typically also recharge R-12? I am in the Boston area. Thanks
    -----------------------
    R12 hasn't been made for decades -
    most AC shops have gotten rid of the R12 equipment -
    any remaining R12 freon WILL be very expensive -

    so it might be cheaper to convert to 134a -

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    r_2016's Avatar
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    Re: R-12 Recharge

    Someone told me it was about $40-$50 per pound. System has about 3 lbs right?

    ----------

    Basscatt: You have an 89 Deville? Has yours been converted to R-134a? I have seen cost figures for converting all over the place, from $125-$800. Thanks

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    dennis93coupe's Avatar
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    Re: R-12 Recharge

    Are you absolutely sure you have R12 in your system?

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    Re: R-12 Recharge

    Not 100% sure, but I do know the the 93 Devilles were built using R12 and I don't belive the former owner converted it. I will have to look at the label or check to see if it has the R12 fittings on the high and low side tubes. Does your Deville have R12?

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    Re: R-12 Recharge

    No, I converted mine about 3 years ago.

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    Re: R-12 Recharge

    Oh, ok. If you don't mind me asking, what did that cost you to convert it? Do they have to change the compressor and drain all the oil? If it is going to be easier to convert, I will do that. Thanks

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    Re: R-12 Recharge

    R12 was phased out at the end of '94. Not many places still have any, but it is worth it's weight in gold.

    To convert the system you have to drain all the old oil (from each component), replace the accumulator and probably the condenser as well because it can't be flushed, flush all the lines and replace the service ports. I would guess it's about a $1000 job?

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    Re: R-12 Recharge

    Ranger: Hopefully it won't cost that much; I am kepping my fingers x that it just needs alittle refrigerent. I noticed that the AC clutch does not engage, does anyone know if the system shuts down the compressor if it is low on refrigerent? Someone told me that one time. Thanks

  12. #11
    MoistCabbage's Avatar
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    Yes, the compressor will be disabled if the system is low. If it's low, there's a leak.

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    r_2016's Avatar
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    Re: R-12 Recharge

    Maybe a dried out o-ring or something? Hopefully its not a catastopic leak. The last time I used it it worked great and I had it for a few years and never recharged the AC. Hey, maybe I will get lucky and it will be a bad relay. I havent had a chance to work on it and pull the code. Thanks

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    Re: R-12 Recharge

    It would not be out of line for a 20 year old car to need a little top off (even though it is a sealed system). I have topped off many an A/C system over the years and have had A/C guys tell me that is perfectly normal. Now I'm not talking yearly top offs.

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    Re: R-12 Recharge

    Hopefully that's all that it will need; I have had the car 10 years and have never had to touch it. The fun part will be finding a shop that will do it. Even if R12 is $50 a pound, it should not be that much money. I will keep the forum posted on what the issue was. Thanks Guys

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    dusty256 is offline Cadillac Owners Member
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    Re: R-12 Recharge

    Kind of makes me wish I had stashed a few cases of r12 cans. I can remember as a kid it was like at the most a buck a can and every summer you just threw in a can or two in the old car to get through a hot summer .

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