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[Solved] Engine Misses for 10 -15 Minutes, Then Clears Up. Check Engine Light Comes On

Discussion in '1st Gen. Tacomas (1995-2004)' started by skeezix, Jun 5, 2019.

  1. Jun 5, 2019 at 4:24 PM
    #1
    skeezix

    skeezix [OP] Well-Known Member

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    All of a sudden the engine in my 1998 TRD started to miss and speeds under 50 mph. Truck runs fine at interstate speeds (70-80 mph), so I'm in the market for a good handheld OB2 reader. One that doesn't need a phone to work. I've been looking at the Foxwell NT201 (ca $$) and NT301 (ca $70) and I think the 301 is the better deal. Any comments are welcome.
     
    Last edited: Jun 5, 2019
  2. Jun 6, 2019 at 10:16 AM
    #2
    skeezix

    skeezix [OP] Well-Known Member

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    Follow-up...
    Went to an Oreillys and an Autozone, had them pull the codes, found P031 was the only code. So when the engine cools down I'll check the spark plug in that cylinder. It's been about 50K miles since I replaced the plugs.
    This is a 3.0 liter engine. If the coil pack were bad on cylinder 1, I suspect that whatever cylinder is connected to the wire from the pack would also be misfiring, and the truck would really be limping along. As it is, it's still driveable.
     
  3. Jun 6, 2019 at 10:28 AM
    #3
    jbrandt

    jbrandt ......LOADING

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  4. Jun 6, 2019 at 10:57 AM
    #4
    OneWheelPeel

    OneWheelPeel Well-Known Member

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  5. Jun 6, 2019 at 11:39 AM
    #5
    skeezix

    skeezix [OP] Well-Known Member

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    @jbrandt :oops: You're right. 3.4L is correct. And P0301 is correct. My bad.

    I thought the plugs should last longer than 50K miles.

    If it is a bad coil pack on cylinder 1, would I not see an additional code that references the other cylinder to which the wire from the coil pack is attached?

    And if a coil pack were bad, wouldn't the engine miss when it's cold as well??

    It's kinda hard for me to drive into town to get tested (again), that's why I ask...

    @OneWheelPeel On 1/14/2011 at 60400 miles I replaced all three of the the wire covers (but not the wires) and all six spark plugs. That was 35K miles ago.
     
  6. Jun 6, 2019 at 11:42 AM
    #6
    OneWheelPeel

    OneWheelPeel Well-Known Member

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  7. Jun 6, 2019 at 2:42 PM
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    jbrandt

    jbrandt ......LOADING

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    Hard to say, really. It certainly could be a bad plug, but they *should* last longer than that. If it is the plug, that would suggest to me something else is causing the plug to go bad prematurely. If that's the case, maybe the coil is next in line to be fixed. If you switch the coils around and another cylinder misfires, that's a pretty good clue it's the coil...
     
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  8. Jun 6, 2019 at 3:16 PM
    #8
    skeezix

    skeezix [OP] Well-Known Member

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    That's good information. I do have another question - is #1 cylinder the front-most or the rear-most cylinder on the passenger side?
     
  9. Jun 6, 2019 at 4:01 PM
    #9
    OneWheelPeel

    OneWheelPeel Well-Known Member

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  10. Jun 6, 2019 at 4:33 PM
    #10
    skeezix

    skeezix [OP] Well-Known Member

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    Thank you for the diagram.

    I was thinking that #1 was closest to the firewall.
    Truth be told, I didn't think at all. I worked on #5 instead. :facepalm: :annoyed:
     
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