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Thread: Sudden (apparently) decline in gas mileage?

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  1. #1
    Member Since
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    How are your oxygen sensors? Have you checked them today? Number one cause of mileage decrease if they are off.

  2. #2
    Member Since
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    Quote Originally Posted by blacksambo View Post
    How are your oxygen sensors? Have you checked them today? Number one cause of mileage decrease if they are off.
    This is helpful, I'm getting CEL for sensors on banks 1 & 2. Also experiencing diminished mileage. Unfortunately though, I just upsized my tires, so it'll be tough to reconcile cause and effect here.

    -V
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