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  1. Need help!

    I have a 99' Ranger XLT 4.0 Bought it off a buddy and got some codes read. I'm getting P0171 and 0174 - bank 1 and 2 too lean. not sure what that means. google tells me a million different things. I bought all new intake manifold gaskets but have no clue how to go about changing all of that...

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