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Thread: AC not blowing out of Vents intermittent

  1. #1
    Join Date
    Jun 2010
    Location
    Boston
    Age
    66
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    55

    AC not blowing out of Vents intermittent

    Hi,
    When I start the car and turn on the AC it is blowing out of the DEFROSTERS. When I switch to the FLOOR it does go there , but not too the VENTS, but after pushing the buttons on the unit it will eventually go to the VENTS. So I am thinking it is not an issue with the Blend door. Would this be that the EATC is going bad?

  2. #2
    Join Date
    May 2009
    Location
    Moreau Island
    Posts
    11,506
    The washers in the EATC have most likely split. Replace them with silicone style. Lots of threads on how or you can get in touch with member fastblackmerc and he can do it for you for a nominal fee.

  3. #3
    Join Date
    Jun 2011
    Location
    Northeast OH
    Posts
    7,493
    Run the eatc self test. Post results.. A defrost only is default mode for bad o rings.

    http://www.idmsvcs.com/2vmod/eatcswap/selftest.html
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  4. #4
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    Jun 2010
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    Boston
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    thanks for the info....

  5. #5
    Join Date
    Jan 2004
    Location
    Somewhere in the N.C. Triangle
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    63
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    Running the self test will not tell you if the o-rings are bad.

    I can repair your EATC (including upgrading the button & fan lights to LED).

    PM me if interested.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  6. #6
    Join Date
    Jan 2004
    Location
    Somewhere in the N.C. Triangle
    Age
    63
    Posts
    25,770
    Quote Originally Posted by bluesboyst View Post
    Hi,
    When I start the car and turn on the AC it is blowing out of the DEFROSTERS. When I switch to the FLOOR it does go there , but not too the VENTS, but after pushing the buttons on the unit it will eventually go to the VENTS. So I am thinking it is not an issue with the Blend door. Would this be that the EATC is going bad?
    Read this for a better understanding of the HVAC issues you might encounter.

    https://www.mercurymarauder.net/foru...-HVAC-PROBLEMS
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




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