Converting my '93 from R-12 to R-134A
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Cadillac Allante Forum Discussion, Converting my '93 from R-12 to R-134A in Past Cadillac Vehicle Discussion; I'm thinking of converting the air conditioning on my 93 Allante from R-12 to R134A. Does anybody here have experience ...
  1. #1
    larry3828 is offline Cadillac Owners Member
    Automobile(s): 2010 SRX AWD Premium, 1993 Allante
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    Converting my '93 from R-12 to R-134A

    I'm thinking of converting the air conditioning on my 93 Allante from R-12 to R134A. Does anybody here have experience with this? I would appreciate anything anyone can tell me to help with this process. My neighbor who owns the gas station up the street has advised me to have this done due to the expense of R12 and I'd just like to know if there are any issues peculiar to our Allantes that I need to know about before getting this done. He's telling me this will cost around $250 to complete.

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  3. #2
    OffThaHorseCEO is offline Cadillac Owners Connoisseur
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    Re: Converting my '93 from R-12 to R-134A

    is your system out?

    r12 is a bit more expensive, but it also blows much cooler

    not to mention, 250 to convert outweighs the cost of top ups for a couple of years

  4. #3
    larry3828 is offline Cadillac Owners Member
    Automobile(s): 2010 SRX AWD Premium, 1993 Allante
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    Thread Starter

    Re: Converting my '93 from R-12 to R-134A

    Right now my a/c doesn't work because all the coolant has leaked out and the compressor is shutdown. So I was going to have it in to find this slow leak and replace the R-12, but my neighbor told me I should just go ahead and convert it over since the R-12 is so much more expensive than the R-134A. I think he said it's about 5 times more.

  5. #4
    OffThaHorseCEO is offline Cadillac Owners Connoisseur
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    Re: Converting my '93 from R-12 to R-134A

    oh in that situation then yes. as far as i know though youll need a new compressor which is the most expensive part of the conversion. some also say you need new condenser orifice tube and other components, some say those arent necessary. id ask the ac specialist exactly which parts hes replacing and tell him you want to be as safe as possible. nothing is worse than having to pay to do it again

  6. #5
    KrisK is offline Cadillac Owners Member
    Automobile(s): 1996 Fleetwood Brougham; 1993 Pinninfarina Allante
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    Re: Converting my '93 from R-12 to R-134A

    The PO converted to R134 in my car and I am not impressed.

  7. #6
    larry3828 is offline Cadillac Owners Member
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    Thread Starter

    Re: Converting my '93 from R-12 to R-134A

    So, are we saying it may be better just to let them find the leak in the system and just recharge with R12 and be done with it?

  8. #7
    OffThaHorseCEO is offline Cadillac Owners Connoisseur
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    Re: Converting my '93 from R-12 to R-134A

    if its someone you trust and they have access to r12 thats what i would do

  9. #8
    m0ng0 is offline Cadillac Owners Member
    Automobile(s): 1993 Allante, 1973 Eldorado Convertible
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    Re: Converting my '93 from R-12 to R-134A

    thats what I plan to do in keeping it r12, its fairly cheap on ebay and craigslist and it cools much better, mine leaks also, but fall in washington state is just about here !

  10. #9
    larry3828 is offline Cadillac Owners Member
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    Thread Starter

    Re: Converting my '93 from R-12 to R-134A

    Thanks, guys. I think I've decided to just keep it as it is and repair the leak. I appreciate all the info and opinions.

  11. #10
    bobdink is offline Cadillac Owners Member
    Automobile(s): 2002 Deville DTS
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    Quote Originally Posted by larry3828
    Thanks, guys. I think I've decided to just keep it as it is and repair the leak. I appreciate all the info and opinions.
    If you don't know the source of the r12 stay away. Much of the after market stuff contains methane,read natural gas. It will explode.

  12. #11
    max blue is offline Cadillac Owners Member
    Automobile(s): 1993 Allante
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    Re: Converting my '93 from R-12 to R-134A

    My mechanic, an Allante specialist, strongly discouraged me from converting. I've also heard others say that R-12 is far more efficient.

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