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Thread: O2 sensor help

  1. #1
    Junior Member Rookie
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    O2 sensor help

    Can you run a 90 mustang without O2 sensensors.I read somewhere the coputer would run in a open loop mode.is this true? thanks
    Scotty
    90 LX Mustang #73 CMC I hope

  2. #2
    Constant check engine light
    Rich idle
    Fouled plugs
    Unknown AFR
    Sickning exhaust smell


    If you could run above 3000rpms 100% of the time, it could work.
    2004 Camaro Mustang Challenge Champion
    2005 Camaro Mustang Challenge Champion

  3. #3
    Senior Member Carroll Shelby mitchntx's Avatar
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    Quote Originally Posted by evarner
    Constant check engine light
    Rich idle
    Fouled plugs
    Unknown AFR
    Sickning exhaust smell
    You are describing a CMC LT1 motor perfectly.

  4. #4
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    hats what I thought.next question?I have a new motor injectors plus wires coil dist. no O2s.The motor fires but is missing on a couple cylinders.When we check the plugs thay are wet .I am thinking the injector is not shutting off could it bu the computer.I am going to put in o2s but that shouldnt keep it from firing on all 8 would it?
    Scotty
    90 LX Mustang #73 CMC I hope

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