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Truck running funny :/

Discussion in '1st Gen. Tacomas (1995-2004)' started by yodabeast99, Jan 13, 2012.

  1. Jan 13, 2012 at 9:48 AM
    #1
    yodabeast99

    yodabeast99 [OP] New Member

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    k&n intake
    hey everyone im new to the forum and im in need of some help. about a couple weeks ago i noticed when i take my truck out to do errands or what not, i turn off the truck, do whatever i have to do come back turn my truck on and it starts idling rough and when i put it in gear its really jumpy and hesitating when i get on the gas. It only does it when i turn the truck on after it had time to warm up. it's perfectly fine when its cold. i threw a CEL yesterday and put my code reader on it and it gave me a p0300 and 301 which is a random misfire on cylinder 1. anyone know what it could be since it only does it when its warm?
     
  2. Jan 13, 2012 at 9:54 AM
    #2
    tan4x4

    tan4x4 Well-Known Member

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    Bilsteins, OME 881's, 3-leaf AAL, Detroit TruTrac, Tundra brake swap, Michelin LTX AT2, Tranny skidplate, TC skidplate, CBI rear bumper, TG sliders, UltraGauge, PowerTank, Reverse Camera
    Any black smoke right after starting?
    Does the idle smooth out after a minute or so?

    If so, it could be a leaking injector for cylinder #1.
    While its sitting the the parking lot, the residual pressure
    causes fuel to drip into the cylinder, and run real rich
    for a minute.
     
  3. Jan 13, 2012 at 10:00 AM
    #3
    yodabeast99

    yodabeast99 [OP] New Member

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    k&n intake
    no black smoke. when its warm it will stay running rough. i thought maybe a egr valve i dont think my truck has one.
     
  4. Jan 13, 2012 at 10:05 AM
    #4
    4WD

    4WD cRaZy oLdmAn

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    Grey wire MOD, deck plate, diff breather MOD, 2nd gen. OME 883# on Tundra 5100's, OMD custom 3" leafsprings, rear shock relocation, Ivan Stewart TRD rims w/285/75/16's, '02 bumper MOD, Famous Fabrications sliders , LED interior/exterior lights, bed bar, Custom tube bumper, Old school KC day lighters,Red Ring 8" HID flood, Kenwood vhf 2M.. umm some other shit I'm forgetting right now
    Pretty sure no EGR... Clean your MAF sensor...;)
     
  5. Jan 13, 2012 at 10:10 AM
    #5
    Rusty 06 4x4

    Rusty 06 4x4 NBHNC

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    that^^^
     
  6. Jan 13, 2012 at 10:13 AM
    #6
    98tacoma27

    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    Basics on trouble shooting a 300 series CEL code:

    Inspect the plug for cracks/bad electrodes (check gap: should be .039-.043")/loose connector
    Replace (all) if anything cracks are found or if the electrodes are worn


    Swap coils with another cylinder/Reset code/see if code number changes
    If it changes to the cylinder the coil was swapped to, it's the coil.
    If it doesn't change, it's the plug or injector.

    Repeat above process with injector if none of the above worked
     
  7. Jan 13, 2012 at 1:19 PM
    #7
    tan4x4

    tan4x4 Well-Known Member

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    Bilsteins, OME 881's, 3-leaf AAL, Detroit TruTrac, Tundra brake swap, Michelin LTX AT2, Tranny skidplate, TC skidplate, CBI rear bumper, TG sliders, UltraGauge, PowerTank, Reverse Camera
    Seems to be temperature-related.
    Could be one of the temp sensors telling the computer that
    its still cold, even after it warms up.
     

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