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A/C recharge

Discussion in '456/550/575' started by MiracleMan, Feb 15, 2022.

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  1. MiracleMan

    MiracleMan Rookie

    Jan 18, 2022
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    Dave Nicholas
    #1 MiracleMan, Feb 15, 2022
    I feel really stupid about asking this, but I cannot find where the input is to recharge the a/c. I have looked high and low and seen about everything, but nothing says "screw your nozzle and gauge here". A photo would help.
     
  2. Rifledriver

    Rifledriver Three Time F1 World Champ

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    #2 Rifledriver, Feb 15, 2022
    From memory I recall they are up near the battery.
     
  3. ///Mink

    ///Mink Formula Junior
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    Tom Mink
    #3 ///Mink, Feb 15, 2022
    What car? On a 550 the high/low ports are on the right wheel well back near the battery.

    Edit: Brian beat me to it so here's a pic.
     

    Attached Files:

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  4. MiracleMan

    MiracleMan Rookie

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    #4 MiracleMan, Feb 15, 2022
    Thanks, stupid of me. A 456M.
     
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  5. Qavion

    Qavion F1 World Champ
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    #5 Qavion, Feb 15, 2022
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  6. MiracleMan

    MiracleMan Rookie

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    #6 MiracleMan, Feb 16, 2022
    Neat illustration, but I do not have a machine that looks anything that is shown. Perhaps I should just go to the local dealer. It was so easy to find and recharge on my Pilot. But then . . . .
    DN
     
  7. Qavion

    Qavion F1 World Champ
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    #7 Qavion, Feb 16, 2022
    Not only for environmental reasons, but to extract the old refrigerant completely and to put in the correct weight of new refrigerant (you can't always go on pressure).
     
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  8. MiracleMan

    MiracleMan Rookie

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    #8 MiracleMan, Feb 16, 2022
    I think that is wise advice.
     
  9. tazandjan

    tazandjan Three Time F1 World Champ
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    #9 tazandjan, Feb 16, 2022
    Dave- You really want to change out the dryer/filter/receiver and have someone pull a really good vacuum before refilling to get rid of any water vapor. Charge will cool and lot better and longer if you do that. Even in Nevada.
     
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  10. Sergio Tavares

    Sergio Tavares Formula 3

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    #10 Sergio Tavares, Mar 6, 2022
    slap 12oz in there, many refrigerant bottles at NAPA have a gauge to help you
     
  11. MiracleMan

    MiracleMan Rookie

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    #11 MiracleMan, Mar 7, 2022
    I'm back after a not-so-good Sebring Vintage race weekend and ready to solve the a/c problem. I have a NAPA setup with gauges and found the inlet/outlet caps. Damn things are painted black and nearly invisible. From the instructions - put the hose onto the L or lower side and press the button. Any advice?
     
  12. Rifledriver

    Rifledriver Three Time F1 World Champ

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    #12 Rifledriver, Mar 7, 2022
    Advice? You are already ignoring the best advice you were given and want more?

    Why if you will just blow it off anyway.
     
  13. fatbillybob

    fatbillybob Two Time F1 World Champ
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    #13 fatbillybob, Mar 7, 2022
    If you do not have full gauges and know the high low pressures then the best way to do this is take out all freon and pull vaccum and add back a known quantify of freon (I forget it is in the book about 30oz.). Over charge can damage seals and they system is expensive to repair. What you sound like you are doing topping up the charge is fine for a cheap toyota where you can get rebuilt compressors and other cheap parts.
     
  14. MiracleMan

    MiracleMan Rookie

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    #14 MiracleMan, Mar 7, 2022
    Whoa fellas. I was responding to Sergio to see if he had advice on doing it himself. Having prepared race cars for a long, long time I have a decent knowledge of mechanics. Just wondering if this is something one can do themselves rather than taking to a dealer.
     
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  15. tazandjan

    tazandjan Three Time F1 World Champ
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    #15 tazandjan, Mar 7, 2022
    Sure, if you have a vacuum pump, gauges and storage capability for refrigerant.
     
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  16. F456M

    F456M F1 Rookie

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    #16 F456M, Mar 7, 2022
    In my country, AC is neccesary only a few weeks and I have never had any real knowledge of AC systems. But upon some reading up and talking to AC specialists, I heared that a good AC require the right amount of AC refrigerant. It is said to be the difference in pressure that give the cooling. So too much will not give the right effect. Anyone agree with me? Usually a drain and re-fill cost around 100 euro and I can live with that every second or third year.
     
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  17. Sergio Tavares

    Sergio Tavares Formula 3

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    #17 Sergio Tavares, Mar 8, 2022
    Yes, you can do it no tools, use oldtimers style
    Use the dyed oil type refrigerent bottle only add to the Low side.
    Place your hand on big hose at Compressor then run add until your hand is cool.
    If leaks then you can EASY see with dye
     
  18. MiracleMan

    MiracleMan Rookie

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    #18 MiracleMan, Apr 9, 2022
    Sergio, you are 100% correct. I bought a kit with a pressure gauge, read the instructions and charged the system myself. Very, very easy. The a/c is nice and cold and the cost was $35. We drove 3 hours to the Long Beach GP and a dinner for Rick Mears and we stayed cool and crisp out and back.
     
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