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  1. #1
    Registered Member One Ring
    Join Date
    Nov 29 2008
    AZ Member #
    35791
    Location
    texas

    Multiple CEL Codes...Need help

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    The car is a 04 a4 1.8t fwd sitting at 85k.......

    PO171 bank 1 lean
    P0300 multiple misfire
    P0301
    P0302
    P0303
    Po304

    I think that the P0171 came on right before it started to misfire. But it started to feel like when you hit the gas it didn't want to move sometimes.
    I can't find any vac leaks. I clean the MAF. Changed the plugs. Any ideas on what's going on? I'm starting to think that it could be a fuel issue. Maybe a clogged filter but if I get on it it doesn't bog down. You can really feel the missing at idle and when driving it kinda like it semi-jerk just for a split second every once and a while. Please I need some help

  2. #2
    Veteran Member Four Rings dirtybrd's Avatar
    Join Date
    Mar 21 2006
    AZ Member #
    10955
    My Garage
    Revo Tuned 2.0L w/35r
    Location
    Lakeland, FL.

    Re: Multiple CEL Codes...Need help

    Most likley a bad MAF or vacuum leak. The 171 code is the cause of the misfires.
    BetaAlphaTauMember#6

    I'm back bitches!

    35r and REVO...what?

  3. #3
    Registered Member One Ring
    Join Date
    Nov 29 2008
    AZ Member #
    35791
    Location
    texas

    Re: Multiple CEL Codes...Need help

    The only noise I hear sounds like its coming from the intake. I can't find any leaks there. Does the air moving into the intake sound kinda like a leak? What is the normal MAF reading?

  4. #4
    Registered Member One Ring
    Join Date
    Nov 29 2008
    AZ Member #
    35791
    Location
    texas

    Re: Multiple CEL Codes...Need help

    bump

  5. #5
    Registered Member One Ring
    Join Date
    Nov 29 2008
    AZ Member #
    35791
    Location
    texas

    Re: Multiple CEL Codes...Need help

    Thanks for the quick reply dirtybrd. Anyone else have an advice for me.

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