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P0171 & P0174 code, intermintant loss of power - SOLVED

Discussion in 'Technical Chat' started by NWOffroad, Feb 6, 2018.

  1. Feb 6, 2018 at 7:05 PM
    #1
    NWOffroad

    #1
    NWOffroad [OP] Active Member

    Joined:
    May 30, 2014
    Member:
    #130963
    Messages:
    31
    Gender:
    Male
    Hippieville OR
    Vehicle:
    09 DCLB 4x4 LT
    TC LT, Kings, DMZ, Rigids, a few other goodies...
    Read a bunch of threads on here but never any resolution.
    Truck was intermittentaty losing power and shutting off around 2500 rpm, then threw some P0171 and P0174 codes.
    -Cleaned MAF with proper cleaner as it had oil contamination from the TRD CAI filter. Did NOT solve issue.
    - Replaced the fuel pump - CarQuest / Advanced Auto sells a Denso (made in Japan) pump kit. Perfect fit, and the old filter sock was nasty, and crap in the module housing although the tank was clean. Pulled tank out the bottom due to bed cage, only issue was getting the quick disconnects to open.
    No more power loss, intermittent shut offs, codes and Avg mpg went from 17 to 20.
    Considering this SOLVED.
     
    NWOffroad, Feb 6, 2018
    #1

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