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obd-II

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  • obd-II

    hi everyone, newbe to this site, th e question is i have 2001 lincoln navigator th e engine light came on im getting to codes P0174 and p0171 which means fuel to lean in bank 1 and bank2 . does anyone know what this means i use 93 octane only thanks for any replys all are greatly appriciated thanks butch

  • #2
    I have a 2000 Navigator which had the same problem. What i found was, a vaccum leak at the back of the intake manifold. Replace the vaccum L connector and problem was solved.

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    • #3
      duck9 thanks ill give it a try, this thing has been driving me crazy.

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