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  1. K

    01 SOHC 4.0L - P0171 and P0174

    I did the best I could at searching and reading old topics regarding the Lean bank 1 and 2 codes, but it sounds like my truck might not be the same problem as the well documented 00M12 intake leak. - 2001 Explore, 4.0L SOHC engine, 94,000 miles - Problems - rough idle / surging and recently...
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