Evaporator Core swap. Special tool needed? - FirebirdV6.com/CamaroV6.com Message Board

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  • #16
    Re: Evaporator Core swap. Special tool needed?

    Originally posted by 99v6bird View Post
    I'm no expert, but I think the R134 leaks out and air and moisture get in the system.
    I think the "evacuation" removes the air and moisture from the system by creating a vacuum, then the fresh R134 goes in.
    ya that sounds about right

    2002 SOM Z28 Camaro - 12.9 @ 104 mph
    1996 3800 Camaro - 13.43 @ 100.77 mph


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    • #17
      Re: Evaporator Core swap. Special tool needed?

      Yes, you have to evacuate the system because the air in there takes up space that could be taken up by the R134A. I used a hand-held vacuum pump to evacuate my AC system, it worked great. It just made my hand tired, it's a lot of pumping, but it only took about 15 mins.
      2002 Silver Firebird A4<br />T-Tops, Leather, Y87, W68, Chrome Wheels<br />Bone Stock

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