1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

P0171 OBD II trouble code question and help

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Gincoma, Nov 25, 2010.

  1. Nov 25, 2010 at 3:00 PM
    #1
    Gincoma

    Gincoma [OP] Special Edition Member

    Joined:
    Nov 14, 2010
    Member:
    #46179
    Messages:
    2,123
    Gender:
    Male
    Salt Lake City UT
    Vehicle:
    RIPieces 2005 Tacoma, adios 2011 :'(
    Factory Monster Truck Package with reverse gear.
    My truck has been running like crap for some time now with no check engine light. Couple months ago it came on for about 3 hours and shut off but truck still lags. When i give it gas there is no pep in the motor, it goes but you just cant feel it, you have to give it more throttle to get the same sense. I changed my MAF sensor but nothing changed and weird part is some days it runs normal but 98% of the time it lags. Any ideas fellas...oh and happy thanksgiving everyone. New to tacomaworld but long time member to toyotanation
     
  2. Nov 25, 2010 at 4:50 PM
    #2
    krans

    krans Well-Known Member

    Joined:
    Feb 28, 2009
    Member:
    #14173
    Messages:
    418
    Gender:
    Male
    First Name:
    Kenny
    Huntington beach/ West min duh
    Vehicle:
    09 Sport mall crawler
    Icon extended travel with resi front and rear,Camburg UCA, All pro standard leaf pack, Fogs anytime, General grabbers AT2,Custom stainless steel brake lines,bed box, Bestop soft top,50' light bar, amber rigid pods,CBI ditch mounts with LED pods,TRD intake,Anti dark hoodlights/rock light/LED whip,FX-R retros and Gibson catback..more mods to come
    How many miles on the engines? The p0171 code is saying the engine is running too lean. I would pull the oxygen sensors out and bench test them make sure they aren't faulty. Remember the O2 sensors have everything to do with engine performance.
    Hope this helps
     
  3. Nov 25, 2010 at 6:49 PM
    #3
    Eurosport

    Eurosport Well-Known Member

    Joined:
    Sep 5, 2010
    Member:
    #42772
    Messages:
    438
    Gender:
    Male
    intake leak somewhere...
     
  4. Nov 25, 2010 at 7:27 PM
    #4
    jbg5402

    jbg5402 Member

    Joined:
    Nov 1, 2010
    Member:
    #45547
    Messages:
    5
    Gender:
    Male
    First Name:
    Josh
    Atlanta
    Vehicle:
    07 double cab 4x4
    vaccum leak most likelly. Check around the air box have seen people change air filters many times and not get the box sealed back tight when they close it other than that check all hoses and around the intake
     
To Top