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Surging/Thrusting Problem Under Acceleration

Discussion in '1st Gen. Tacomas (1995-2004)' started by jberry813, Jan 2, 2013.

  1. Jan 2, 2013 at 10:14 PM
    #21
    ian408

    ian408 Well-Known Member

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    Absolutely. Easier to pressure test.

    I would almost bet on a vacuum leak though. At least from the symptoms.
     
  2. Jan 2, 2013 at 10:16 PM
    #22
    blake5995

    blake5995 Well-Known Member

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    vacuum leaks suck so much
     
  3. Jan 2, 2013 at 10:16 PM
    #23
    maxamillion2345

    maxamillion2345 Go home if you don't like guns liquor and whores.

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    Easy to test!
     
  4. Jan 2, 2013 at 10:17 PM
    #24
    jberry813

    jberry813 [OP] The Mad Scientist

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    Explain yourself.
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  5. Jan 2, 2013 at 10:19 PM
    #25
    blake5995

    blake5995 Well-Known Member

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    Get your hands on a fuel pressure gauge and just hook it up inline from the tank to the engine and then cycle the key.
     
  6. Jan 2, 2013 at 10:19 PM
    #26
    maxamillion2345

    maxamillion2345 Go home if you don't like guns liquor and whores.

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    Just spray a little carb cleaner around and listen to idle. You know that.
     
  7. Jan 2, 2013 at 10:20 PM
    #27
    blake5995

    blake5995 Well-Known Member

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  8. Jan 2, 2013 at 10:24 PM
    #28
    jberry813

    jberry813 [OP] The Mad Scientist

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    I lit my Miata on fire doing that....also chasing a vacuum leak. :anonymous:
     
  9. Jan 2, 2013 at 10:25 PM
    #29
    ian408

    ian408 Well-Known Member

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    Can you read the fuel trim? That might at least tell you if it's in the fuel system.
     
  10. Jan 2, 2013 at 10:27 PM
    #30
    maxamillion2345

    maxamillion2345 Go home if you don't like guns liquor and whores.

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    Shit happens!
     
  11. Jan 2, 2013 at 10:35 PM
    #31
    RelentlessFab

    RelentlessFab Tacoma offroad armor fabricating beast Vendor

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  12. Jan 2, 2013 at 10:38 PM
    #32
    MapleMoose

    MapleMoose Drunk Canadian

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    You didnt mention it in the OP but are you dumping huge amounts of fuel? That may narrow down a misfire, fuel leak or injector failure. You could also get some fuel dye and dump it in your fuel tank and see if it comes out anywhere.

    My second thought like you is the MAF or maybe even the TB
     
  13. Jan 2, 2013 at 10:45 PM
    #33
    blake5995

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    he already cleaned the TB and he is waiting on a MAF to try.
     
  14. Jan 2, 2013 at 10:54 PM
    #34
    MapleMoose

    MapleMoose Drunk Canadian

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    I know this. I was thinking it might be more mechanical
     
  15. Jan 2, 2013 at 11:01 PM
    #35
    Shaggs

    Shaggs Well-Known Member

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    If it were MAF he should have. P0171 or P0174 off the top of the head. It will throw off fuel trim adaptions. Also if vacuum leak usually you get a 171 or lean code. Test the throttle body... Gut instinct. If its all electric it's basically a potentiometer. Either way I'd do a couple tanks with techron additive and marvel mystery oil added to fuel and see if it cleans injector pulse. Cheap, easy, non invasive, or BG 44k. I work with supercharged engines every day. Usually if there's power loss or stalling its TB related without throwing faults, or something inside your exhaust is falling apart or collapsing
     
  16. Jan 2, 2013 at 11:07 PM
    #36
    707tothe907

    707tothe907 Superior Member

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    My bet would be injectors. My buddies 2001 Tacoma had a messed up injector that would do what you're describing Jason. Only problem with that theory though is you would think it would be sounding and feeling more like a misfire.
     
  17. Jan 2, 2013 at 11:14 PM
    #37
    EL ROJO

    EL ROJO B==D~~

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    Fuck Jason if it's not one thing it another huh! That blows buddy, hope u figur it out soon and on the cheap :thumbsup:
     
  18. Jan 2, 2013 at 11:27 PM
    #38
    MapleMoose

    MapleMoose Drunk Canadian

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    or throwing a code
     
  19. Jan 3, 2013 at 12:28 AM
    #39
    battlescars

    battlescars Professionull

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    Do us all a favor, put the motor back together and record the problem.
     
  20. Jan 3, 2013 at 12:37 AM
    #40
    12TRDTacoma

    12TRDTacoma Mid Traveling

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    Shit dude. I hope you are getting some progress on this beast. Just looking at the list of everything you have done to it for replacement parts we would call that in the auto repair world, a "shotgun" lol.

    Honestly just thinking about the fact that the moment you pulled off the supercharger and the problem got better would lead me to believe you are having a fuel delivery problem. Which would send me straight to the filter and the pump. Next time something like this happens, I highly suggest checking for sufficient spark and proper fuel pressure first before you go any further. I wish you the best of luck if you haven't already fixed the problem.

    One more thought process to think about:

    Put everything back together, take it down to your local emissions inspection station and have them give you some manual readings of the vehicle. Any drivability issues you are having with the rig will rear its ugly head on there, from there I can assist you with pointing you in the right direction of what you should check that may be causing your issues.
     
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