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Problem remains even after changing plugs and coils

Discussion in '2nd Gen Tundras (2007-2013)' started by Mcfetridge89, Oct 6, 2021.

  1. Oct 6, 2021 at 8:20 AM
    #1
    Mcfetridge89

    Mcfetridge89 [OP] New Member

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    My truck has a misfire on 1&2. Changed plugs and coils. Swapped injectors. No change. VSC flashing, traction control on, hi/lo flashing. Check engine light flashing. I’m going to do a leak down and compression test, thought I’d throw this out there and see if anyone has this issue. Thanks for any help!
     
  2. Oct 6, 2021 at 9:41 AM
    #2
    digdug

    digdug New Member

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    Are you sure it isn't an air injection valve issue? I had all those same symptoms with the all the lights on the dash flashing and it caused my truck to go into limp mode. I purchased and override kit on ebay and haven't had issues since. Sounds like you know way more about engines than me, just comparing symptoms.
     
  3. Oct 6, 2021 at 9:55 AM
    #3
    Mcfetridge89

    Mcfetridge89 [OP] New Member

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    I just looked into that. The only thing is that when I ran the codes it started with misfire #1 and now it says random multiple misfire and started on cylinder #2.
     
  4. Oct 6, 2021 at 9:56 AM
    #4
    digdug

    digdug New Member

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    What are the codes?
     
  5. Oct 6, 2021 at 9:57 AM
    #5
    Mcfetridge89

    Mcfetridge89 [OP] New Member

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    P0302 at first then P0300, P0301
     
  6. Oct 6, 2021 at 10:07 AM
    #6
    digdug

    digdug New Member

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    Man, I don't know. I have a code reader and can go back and look at the history to see. I feel like it pulled those same codes but I'm not sure sure
     
  7. Oct 6, 2021 at 10:30 AM
    #7
    Mcfetridge89

    Mcfetridge89 [OP] New Member

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    Just found this guy with the same problem. He mentioned a capacitor discharge. Going to give it a go.
     
  8. Oct 6, 2021 at 10:38 AM
    #8
    digdug

    digdug New Member

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    Good luck! Wish I could help more. Someone in here will be able to help more then I
     
  9. Oct 6, 2021 at 11:07 AM
    #9
    Bakershack

    Bakershack Critical of Noncritical Thinkers

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    Hope that helps, but if it doesn't, you might try posting in the Ask the Toyota Mechanic and see if @Ruggybuggy can help.
     
  10. Oct 6, 2021 at 11:13 AM
    #10
    Ruggybuggy

    Ruggybuggy New Member

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    Before you do anything clear all the codes, run the truck and address the codes that come up first.

    Start simple then escalate. When was the last time run changed the spark plugs? How many miles on the truck?
     
  11. Oct 6, 2021 at 6:20 PM
    #11
    Mcfetridge89

    Mcfetridge89 [OP] New Member

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    Cleared up all codes. Same things come back. P0300, P0301, P0302. Idles about 950 and shutters hard even up to about 3,000 then smooths out alittle. Swapped coils and plugs and injectors. Still no change and the LO Is flashing vsc flashing check engine light flashing trac off.
     
  12. Oct 6, 2021 at 6:28 PM
    #12
    Ruggybuggy

    Ruggybuggy New Member

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    So you have misfires on cylinder 1 and 2 with multiple misfires? Do you have a way to see the data stream and check which cylinders are misfiring?
     
  13. Oct 6, 2021 at 6:30 PM
    #13
    Mcfetridge89

    Mcfetridge89 [OP] New Member

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    I have a verus but it hasn’t been loading for some reason. I found cylinder 5&7 spark plug tubes full of oil. Oh and fuel pressure is good
     
  14. Oct 6, 2021 at 6:30 PM
    #14
    Ruggybuggy

    Ruggybuggy New Member

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    Don’t be concerned about the other warning lights. Toyotas light up like a Christmas tree when CEL is flashing.
     
    Sundog and 15whtrd like this.
  15. Oct 6, 2021 at 6:33 PM
    #15
    Ruggybuggy

    Ruggybuggy New Member

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    When the tubes are full of oil the high voltage jumps to ground and never fires the plug. Your going to have to fix the oil leaks and replace the boots on the end of the coils.
     
    Ktate, Sundog, Sumo91 and 1 other person like this.
  16. Oct 12, 2021 at 4:20 AM
    #16
    07DCLimited

    07DCLimited New Member

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    Try changing your fuel brand and run premium for at least a few tanks. I had a misfire code about 100,000 miles ago and changed fuel brands. Issue went away and never came back.
     
  17. Oct 12, 2021 at 5:27 PM
    #17
    NueveTundra

    NueveTundra Internet Certified Forum Mechanic

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    Exterior: Toytec ultimate 3" lift level , GoodYear helper air bags , DayStar air bag cradles, AcanII smoked headlights, AcanII smoke Tail lights (2.5 gen style), DV8 front winch bumper , Badlands 12k winch , White AUTMATCH Shackles 3/4" D Ring Shackle, White AutoBots winch hook, Trail Ridge mirrors , 20x9 Creeps rims , 33x12.50r20 RoadOnes , Black Hart cross drilled n slotted rotors , Rigid flood flush mounts rear bumper , WeatherTec rain guards , OEM black side badges , Rigid Amber Radiance Pods. Energy Suspension Red Rack and Pinion Bushings, EAG front mesh Grille, RCI HighLift bed mounts. Rough Country DS2 Steps, A.R.E OverLand Canopy with Ascend basket, Stickers: ToyTec lifts windshield banner, Red Strange Music window sticker(back cab), White Strange Music sticker(back canopy), White Rigid sticker x2 (canopy sides), white Official BigFoot Research Team (Back Canopy) Interior: Alpine double din touch iLX-650 , JL C5-653's (front) JL C1-650x (rear) , JL JX400 4 channel amp , JL JX500 mono amp , 2 JL 12" subs , WeatherTec floor mats, Kenwood F/R Dash Cams, Under the Hood: Koyo all aluminum radiator, Mishimoto red silicon hoses , XS Power 3000 amp battery , LAlectric 300 amp Alternator , K&N replacement filter. Online LED store accessories Fuse/relay box. unknown Cat-Back exhaust.
    The oil leaking could be a issue but I'm not 100% sure on it but leaking oil is never a good thing. Should address the oil leak issue no matter what.

    1.) is your battery terminals clean and tight also grounds tight / non corroded.
    2.) is your your battery getting 13.2-14.8v while running
    3.) air filter clean?
    4.) is each spark plug firing (individually test them) and coil.
    5.) what do the plugs look like? New , grey , black or mega gap the size of the Grand Canyon?
    6.) are each fuel injector firing on time and is the spray pattern correct?
    7.) find something that can hold fuel thats clean and get a sample of the fuel from the injectors about 1oz or 2oz and let it sit over night this will allow water to separate if there is water in the system/check conditions of the fuel.
     

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