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  • Bad Gas Mileage - FIX question!

    I get real bad gas mileage, I will have the car scanned soon.... as I think its an O2 sensor that is the prob since everything else has been changed.

    My Q, If we hookup the autotap software to monitor the air/fuel ratio in the motor, and it turns out to be rich, does that mean my O2 sensor needs replacing?

  • #2
    Running rich can be attributed to a few things.

    Prime culprit is oxygen sensors, then:

    Misfiring/bad plugs.
    Fuel pressure regulator faulty.
    Leaky injectors.
    Exhaust leaks at the heads.
    Big cam. Big stall. Big nuts.<br /><br /><a href=\"http://www.streetlethal.net/vids2/joenastycam.MPG\" target=\"_blank\">Idle/Rev Clip.</a>

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