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2004 3.4 v6 sputtering at acceleration CE Light On

Discussion in '1st Gen. Tacomas (1995-2004)' started by pupdrew, Apr 27, 2017.

  1. Apr 27, 2017 at 10:15 AM
    #1
    pupdrew

    pupdrew [OP] Well-Known Member

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    working on it!
    This morning i went to start up my truck and everything seemed fine, driving to school i notice my truck isn't accelerating well. i could feel the truck sputtering a bit when i accelerated. I don't go on the freeway and just drove the truck home. Hoping someone has an answer to fix this and make my CE light go off :annoyed:. At first the CE light was flashing and then it went to a solid light
     
  2. Apr 27, 2017 at 11:34 AM
    #2
    jammer

    jammer 2003 Toyota PreRunner 3.4L

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    Bentonville, AR
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    Hey Andrew. Without knowing the code from the CE light it's difficult to pinpoint exactly what the issue is. If you have an AutoZone or something similar nearby, they can usually hook up diagnostic scanner and tell you what the code is.
    I had something similar like this happen to me, and it turned out to be a cracked spark plug. My friend has an '04 Tacoma 3.4 and the exact thing you described happened to him. He was able to get to the dealership and they installed new plugs/wires which corrected the problem.
    Hope it works out for ya and Good Luck!
     
    pupdrew [OP] likes this.
  3. Apr 27, 2017 at 1:03 PM
    #3
    Fuergrissa

    Fuergrissa Well-Known Member

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    2nd ^(need codes) but highly advise purchasing a scanner it will pay for its self in no time

    There's a bunch of threads on scanners most like the blue tooth option because with the app it offers much more info

    Plug and punch (basic bi*ch)

    https://www.amazon.com/gp/aw/d/B01N...qid=1493323345&sr=1-20&pi=AC_SX236_SY340_QL65


    Blue tooth option with torque app(the cool kids got these)

    Check out the video scroll down a bit

    https://www.tacomaworld.com/threads/write-up-torque-app-obd2-reader.183560/
     
    pupdrew [OP] likes this.
  4. Apr 27, 2017 at 1:11 PM
    #4
    pupdrew

    pupdrew [OP] Well-Known Member

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    working on it!
    i described my problem to my buddy who owns an auto shop and he said i probably need a new coil :bananadead:
     
  5. Apr 27, 2017 at 8:35 PM
    #5
    johanh13

    johanh13 New Member

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    None yet...

    I had a similar issue with my 1996 3.4L V6, I checked the codes, I had two: P0305 (cylinder 5 misfire detected) and P0401 (exhaust gas recirculation flow insufficient detected). Here is what I did to correct it, so far so good; I changed my spark plugs and plug wires, and I replaced a vacuum hose that became brittle and broken (the hose from the intake manifold to the power steering pump...) Good luck fixing your truck!
     
  6. Apr 28, 2017 at 1:10 AM
    #6
    Laxtoy

    Laxtoy Well-Known Member

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    Donahoe CO's w/ 700lb King Coils, Camburg uca's, T-100 rear leafs, 13WL Tundra brakes, 1" 4crawler body lift, 295/75/16 Hankook MT, Ruff Stuff u bolt flip, 10" Fox shocks turned back on custom mounts, 3” clearanced spare tire crossmember in stock location, Skid Row front and transfer case skid, Mercerfab sliders, homemade front bumper, 4.56's, ARB rear locker, homemade rack with CVT Mt. Bachelor, eBay snorkel, Sierra LEDs 20" dual light bar, Morimoto XB led fogs, Mini D2S projector retrofit, Blue Sea ML-ACR, dual Odyssey PC1200's
    It's a misfire, often caused by something in the ignition like a coil pack, fouled plug or bad plug wire. It can also be caused by a bad fuel injector.

    There are things you can do to check it yourself, first and foremost get the cel trouble code checked to determine which cylinder it's on

    Next step can take some time, but it can narrow things down.

    Check your plugs and wires and replace if they're due, 30k miles for plugs, wires should be replaced if they're worn, I do mine with every timing belt, bout every 90k miles

    You can do the coil pack swap if that doesn't solve it.

    Coil packs are on every odd cylinder, 1,3 and 5 and have a wire off it to the even cylinder. If you threw a code on cylinder 1 let's say, move the coil pack to #3 and if the code moves, you found the issue.

    If that doesn't solve it I'd use the same swap method with the fuel injectors.

    It's a good idea to replace the oring on the fuel injectors you pull out, especially if they haven't been removed in a long while

    The P0401 code mentioned by johanh is the catalytic converter being flooded with unburned fuel. Drive your truck mile that too much and you'll fry it the cat or do damage to the engine burn your valves, so good luck to you, I hope you find the problem
     
  7. Apr 28, 2017 at 7:33 AM
    #7
    tripps

    tripps Member

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    ive had the same problem and it was my Mass Airflow Sensor, the ecu is probably getting a bad reading and the motor is leaning out and it would sputter (this is what happened to me) still recommend to scan the codes tho, high chance that it can be a coil pack too
     
    Dalandser likes this.

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