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1990 Chevrolet Camaro Question: a/c question

 

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sunny fl problem, 3.1L V6, Saint Petersburg, FL, March 21, 2014, 20:14
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how many 12oz cans of 134a refrigerant should be added to a a/c that needs recharged after sitting for a little over a year. was recently converted over from old unit not long before it sat. no known leaks worked and blew really cold before it sat think it just needs recharging how many cans would u recommend? (its actually a 1989 camero with 2.8 V6)

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  • Answer #1

    G. T. Service Center (4162 Answers) , Stephenville, TX - (254) 638-3236
    ProfessorG March 21, 2014, 20:36
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     Master

    How much is still in the system.

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    sunny fl problem, March 21, 2014, 22:01
     Rookie

    I don't know it just blows regular temp. air not cool at all so I thinks its empty

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    ProfessorG, March 22, 2014, 06:28
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    Wow, fool proof; That's a big crock. A retrofitted r-12 system should only be charged 80% of the total charge the r-12 system calls for, and a single gauge on those cans are not fool proof. The only way to do it right, with the ambient temp below 80deg is to remove the existing Freon, and refill with the proper amount, and you need both gauges to see if it is working properly with the head pressure.

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  • Answer #2

    techpaddle March 21, 2014, 22:46
     Technician

    If you are doing this as a DIY project, buy the kit with the pressure gauge on the hose. Fill the system until the gauge reads full. It's pretty well fool proof. The only way to know where an A/C system is in the way of charge, is with gauges.

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    sunny fl problem, March 21, 2014, 23:54
     Rookie

    ok cool thank u

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  • Answer #3

    ziptie12 March 22, 2014, 16:33
     Master

    what about evacuating and vacuuming down the system , or did I miss something?

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    ProfessorG, March 22, 2014, 16:44
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     Master

    Kids now days

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