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EFI O2 Sensor Location

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  • EFI O2 Sensor Location

    The easiest place to attach the O2 sensor would be the exhaust pipe H crossover. Is there any reason why that would not be OK?

    Thanks.

    Cheers,
    Richard
    Richard, '66 Thunderbird Hardtop, 390FE, Edelbrock Al heads, Comp cam, Street Demon 650 carb. Visit my restoration blog at hwythunder.com.

  • #2
    You want the O2 Sensor in the hottest portion of your exhaust pipe. The hotter the better. To test for voltage, I use a propane torch. - Dave
    My latest project:
    CLICK HERE to see my custom hydraulic roller 390 FE build.

    "We've got to pause and ask ourselves: How much clean air do we need?"
    --Lee Iacocca

    From: Royal Oak, Michigan

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    • #3
      Optimum placement I believe is no more than 2 foot from the manifold.

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      • #4
        Is it a wideband? If so, you can reduce life if it is too close. 12-18" after manifold or header collector is usually the best compromise between accuracy and service life. Also make sure it is pointing at 10 or 2 O'clock, on the pipe. If it is pointing downward, it will get condensation in it and kill it quick.
        59-430-HT

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