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  • #16
    Idle Speed Control - Bypass Air Thats what the Festiva book calls it.
    Disconnected it and bingo the humming stopped.
    So festyboy and jglutz, if that is what an IAC is then you sirs are the winners.
    Search Master - Honorary Member of Midwest Festiva Inc., Gulf Coast Chapter

    Everyone is entitled to be stupid, but some abuse the privilege.
    - Unknown
    I don't like superstitious people. They're bad luck. - Serge A. Storms

    If at first you don't succeed, failure may be your style.
    - Quentin Crisp

    God, please save me from your followers!
    - Bumper Sticker

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    • #17
      Yep, that's what it is:-)
      90 Festiva with Brand new B3, 5spd
      92 B6 Festiva, 5spd
      94 Mustang DSS 331, Vortec S-Trim, 5 spd
      94 Mustang GT, stock, automatic

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      • #18
        OK heres the question. Will the IAC from a 1.6 work or are they different?
        Although I just priced a new one from Oreillys and they cant get it for a 1.3 and for a 1.6 it was $380.
        Rock Auto was $480 for the correct one.
        Last edited by MONSOON; 10-06-2008, 06:50 PM.
        Search Master - Honorary Member of Midwest Festiva Inc., Gulf Coast Chapter

        Everyone is entitled to be stupid, but some abuse the privilege.
        - Unknown
        I don't like superstitious people. They're bad luck. - Serge A. Storms

        If at first you don't succeed, failure may be your style.
        - Quentin Crisp

        God, please save me from your followers!
        - Bumper Sticker

        Comment

        • #19
          My 1.6 was out of a 94 323, and I DEFINATLY know that it will not work. Maybe the earlier 1.6's would. I recall seeing a IAC from another mazda that looked like the festivas. Check the salvage yard for earlier 323's 626's and protege's Good luck Monsoon!
          90 Festiva with Brand new B3, 5spd
          92 B6 Festiva, 5spd
          94 Mustang DSS 331, Vortec S-Trim, 5 spd
          94 Mustang GT, stock, automatic

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          • #20
            IF the isc is controlled by the iac in the electrical print in the back of your book. then there is no power to it until you keyon or your main relay is stuck. unplug the main relay or the egi 15 amp fuse. don't believe it should have power without keyon.
            newport tn
            88 262,000 4spd hit in rear
            91 224,000 5spd daily driver since 2000
            91 81,000 5spd second owner
            90 204,000 5spd
            93 automatic rolled 25,000

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            • #21
              Recently someone in another thread mentioned a fuel regulator in the FI Aspire models that hums whenever the key is turned on.
              Original owner of silver grey carburetted 1989 Festiva. 105k km as of June 2006. 140k km as of June 2021.

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