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3.4L Back fires and I need help

Discussion in '1st Gen. Tacomas (1995-2004)' started by AK1stGen, Oct 11, 2017.

Page 3 of 6
  1. Oct 12, 2017 at 3:29 PM
    #41
    Brice

    #41
    Brice Turbo Member

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    This is correct the vacuum diaphram shouldn't have any fuel coming out of it unless you unbolt it from the rail.
     
    Brice, Oct 12, 2017
    #41
  2. Oct 12, 2017 at 3:30 PM
    #42
    Brice

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    Brice Turbo Member

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    On some Tacomas with a certain design it is also possible to flip the MAF around backwards.
     
    Brice, Oct 12, 2017
    #42
  3. Oct 12, 2017 at 3:57 PM
    #43
    AK1stGen

    #43
    AK1stGen [OP] Active Member

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    Okay I don't feel much, if any vacum because this vacuum line runs to the intake tube after the filter so it does t get much vacuum pressure
     
    AK1stGen, Oct 12, 2017
    #43
  4. Oct 12, 2017 at 3:59 PM
    #44
    AK1stGen

    #44
    AK1stGen [OP] Active Member

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    The maf sensor can only be installed one way on this intake
     
    AK1stGen, Oct 12, 2017
    #44
    Brice[QUOTED] likes this.
  5. Oct 12, 2017 at 4:03 PM
    #45
    Brice

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    Brice Turbo Member

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    Ok good.
     
    Brice, Oct 12, 2017
    #45
  6. Oct 12, 2017 at 6:14 PM
    #46
    mechanicjon

    #46
    mechanicjon They call me "Jonny Stubs"

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    Exhaust cam lobe went flat? Had the same symptoms on a Chevy before. Just throwing it out there.....................
    Igniter?
    crank sensor
    cam sensor
     
    mechanicjon, Oct 12, 2017
    #46
  7. Oct 12, 2017 at 7:55 PM
    #47
    AK1stGen

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    AK1stGen [OP] Active Member

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    I'm pulling the valve covers tomarow to inspect the cams.
    I've been working thinking about the igniter but I can't afford to just spend $400 on a new one if it's not going to work and it's a special order part so I couldn't return it if didn't work.

    I would think that the cam and crank sensors would be throwing codes if they were not working.
     
    AK1stGen, Oct 12, 2017
    #47
  8. Oct 12, 2017 at 7:56 PM
    #48
    AK1stGen

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    AK1stGen [OP] Active Member

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    No ones got a maf sensor in town so I'll have to wait till tomorrow to try anouther one
     
    AK1stGen, Oct 12, 2017
    #48
    Bulldogs129 likes this.
  9. Oct 12, 2017 at 8:00 PM
    #49
    AK1stGen

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    AK1stGen [OP] Active Member

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    I also checked the crank shaft gear today along with the woodruff key and the tone ring- I was told my a Toyota mechanic that those could be contributing factors to my problems- but everything was good.
     
    AK1stGen, Oct 12, 2017
    #49
    Dalandser likes this.
  10. Oct 12, 2017 at 8:23 PM
    #50
    mechanicjon

    #50
    mechanicjon They call me "Jonny Stubs"

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    $400? Geez they're proud of that. No junk yards around? Were do you live?
     
    mechanicjon, Oct 12, 2017
    #50
  11. Oct 12, 2017 at 8:24 PM
    #51
    mechanicjon

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    mechanicjon They call me "Jonny Stubs"

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    I have a spare igniter you could try.
     
    mechanicjon, Oct 12, 2017
    #51
    Bulldogs129 and Dalandser like this.
  12. Oct 12, 2017 at 8:32 PM
    #52
    Dalandser

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    Dalandser ¡Me Gustan Las Tacos-mas!

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    [​IMG]
     
    Dalandser, Oct 12, 2017
    #52
    mechanicjon[QUOTED], Bulldogs129 and AK1stGen[OP] like this.
  13. Oct 12, 2017 at 8:42 PM
    #53
    Bulldogs129

    #53
    Bulldogs129 Don't find fault, find a remedy

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    I think you'd have a miss if the cam or crank sensors were bad, and you're only having trouble at 2,000 rpms & higher. The tone ring was a good idea to check. If the woodruff key sheers, you'll know it way before 2k rpms. When setting the timing- are you lining up the crank mark & the cam shafts? Use dielectric grease on all your connections too.

    IMG_5866.jpg IMG_5814.jpg IMG_5824.jpg
     
    Bulldogs129, Oct 12, 2017
    #53
  14. Oct 12, 2017 at 8:43 PM
    #54
    AK1stGen

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    AK1stGen [OP] Active Member

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    Fairbanks, alaska
    Every store is proud of everything they have up here... and the junk yard here doesn't have much for toyotas everyone snatches them up as soon as they get there. But I'm planing to call them tomorrow
     
    AK1stGen, Oct 12, 2017
    #54
  15. Oct 12, 2017 at 8:46 PM
    #55
    AK1stGen

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    AK1stGen [OP] Active Member

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    Yes everything is lined up perfectly and I put dielectric grease on every conextor when I did my Moter swap last month.
     
    AK1stGen, Oct 12, 2017
    #55
    Bulldogs129[QUOTED] likes this.
  16. Oct 12, 2017 at 8:55 PM
    #56
    Bulldogs129

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    Bulldogs129 Don't find fault, find a remedy

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    Ok. Just checking every possible thing...before you spend anymore $$. Hopefully the MAF will resolve it. You're along ways from the 'Sip!
     
    Bulldogs129, Oct 12, 2017
    #56
  17. Oct 12, 2017 at 9:07 PM
    #57
    Bulldogs129

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    Bulldogs129 Don't find fault, find a remedy

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    I'm not sure what your ignition control module part # is...but Amazon has a couple Toyotas for $80. Napa online was $449, there's no telling what the OEM cost
     
    Bulldogs129, Oct 12, 2017
    #57
  18. Oct 12, 2017 at 9:13 PM
    #58
    AK1stGen

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    AK1stGen [OP] Active Member

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    I'll have to check Amazon, and hopefuly they'll ship it up to alaska.

    Thanks
     
    AK1stGen, Oct 12, 2017
    #58
    Bulldogs129[QUOTED] likes this.
  19. Oct 12, 2017 at 9:14 PM
    #59
    mechanicjon

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    mechanicjon They call me "Jonny Stubs"

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    mechanicjon, Oct 12, 2017
    #59
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  20. Oct 12, 2017 at 9:15 PM
    #60
    mechanicjon

    #60
    mechanicjon They call me "Jonny Stubs"

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    PM'd you
     
    mechanicjon, Oct 12, 2017
    #60
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