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Piston misfiring Check Engine Light P0304 P0302 P0300 P0303

Discussion in 'New Members' started by Mike in Orange, Sep 28, 2016.

  1. Sep 28, 2016 at 7:22 PM
    #1
    Mike in Orange

    Mike in Orange [OP] Member

    Joined:
    Oct 29, 2014
    Member:
    #141290
    Messages:
    16
    Gender:
    Male
    Vehicle:
    2002 Tacoma 4WD 3.4L V6
    I am having repeated problems with my pistons misfiring. All of the coils, spark plugs, and wiring are less than year old. Compression tests have come back fine. I have put around 6 bottles of fuel injection cleaner into it this year. I have taken my truck to two different mechanics (who cleaned the fuel injectors) and they are unable to fix it. They can only clean things up and tweak it a bit to get it running smoothly. But a couple months later, it comes back. It idles rough and the acceleration is really inconsistent.

    If it isn't the injectors, plugs, coils, or wiring, then what the hell is it?!?!?

    Thanks for your time,

    Mike
     
  2. Sep 28, 2016 at 7:24 PM
    #2
    TN_Tacoma

    TN_Tacoma Well-Known Member

    Joined:
    Jan 1, 2016
    Member:
    #173727
    Messages:
    377
    Gender:
    Male
    First Name:
    David
    New Jersey
    Vehicle:
    07 Taco PreRunner SR5 DCSB
    K&N CAI, MBRP Cat-Back Exhaust, 265-75-16s Nitto Terra Grappler, Tuff A.T. 15s 16 inch wheels, 1.25" wheel spacers, black bumper, bumper light bar in grill, CB radio, Aftermarket speakers and 2 10 inch subs, LED odometer mod
    Probably a computer problem. I had the same issue using seafoam once and i just cleared the codes to see if it would work. And never had a problem again.
     

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