Thread: Falling mileage w/ new oxygen sensor.

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  1. #1 Re: Falling mileage w/ new oxygen sensor. 
    GrandPrix Junkie
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    those short trips are killing the car, it needs to be driven and warmed up, take a good 10 mile minimum trip ( that is what we had to do at the dealer after any repair)
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  2. #2 Re: Falling mileage w/ new oxygen sensor. 
    GrandPrix Junkie Sabrewings's Avatar
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    Things that could affect mileage...

    PCV
    EGR
    Fuel filter
    Leaky injector
    2004 Impala LS - got some mods sold!!!
    2009 Subaru Impreza WRX STI

    NAIOA moderator Still Imp'n, just in a different Imp.
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