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Hvac only blows in defrost

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  • Hvac only blows in defrost

    Anybody had this same problem? Whether I change to vents or floor air only comes through the defrost vent. I have no idea what is going on any help or pictures will help thanks.

  • #2
    You've got a vacuum leak.
    Annoying people, one post at a time!

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    • #3
      Originally posted by 91cavgt View Post
      you've got a vacuum leak.
      x 2- mine was in the selector switch.

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      • #4
        Originally posted by 91cavgt View Post
        You've got a vacuum leak.
        yup

        Originally posted by white trash wagon View Post
        x 2- mine was in the selector switch.
        so was mine
        Vortex rear stand $75
        8.8 410s. $50

        **SKAGG NASTY**
        My goal in life is to not arrive at the grave in a well preserved body.
        but rather to skid in sideways, totally worn out, shouting "holy shit!!!.. what a ride!"

        1990 Foxbody GT for that ass
        11 4 door
        13 FX2 White 5.0

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        • #5
          Mine was missing the y connector and the hose to the canister.
          Whos your Daddy?

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          • #6
            LOL Ooops I was thinking Jeep.
            Whos your Daddy?

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            • #7
              Check every bit of the small vacumm lines. Start at vacumm tree with the line marked A/C. Trace it to the small check valve on firewall passenger side. Keep going till you find a brake/leak in the line.
              Doug

              90 LX Coupe 5.0
              90 7up Vert. 5.0

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              • #8
                Ok thanks guys

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