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Heditating when givin gas?

Discussion in 'Performance and Tuning' started by winyah, Mar 30, 2010.

  1. Mar 30, 2010 at 6:07 PM
    #1
    winyah

    winyah [OP] Member

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    hey guys new to the fourm and need some help figuring out whats wrong with my truck heres the problem:

    My truck has been hesitating when you first press the gas it boggs down a little and then picks back up. It cut off on me twice when trying to go after stopped. Also ive noticed it doesnt have the power it normally does.

    Ive cleaned 02 sensors but not replaced and sprayed up in the throttle body and put some seafoam in the gas tank nothin seems to be working any ideas? (its a 2000 tacoma)

    thanks
     
  2. Mar 30, 2010 at 6:15 PM
    #2
    skillet_83

    skillet_83 Active Member

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    it's a spark issue sounds like... so check your plugs and ignition system.

    (going out on a limb but I'm guessing 1st gens don't have individual coilpacks... so to check things out do the following)

    first pull the wire away from the coilpack (with truck running) about a 1/4 inch. You should see a blue/copper spark jumping. If one looks weaker than the others or if they aren't really strong might need some new coilpacks.

    check wires for any cracks from age or white spots from heat

    check plugs... look for any oil... black carbon build up means runs rich (most cases stock vehicles with some decent milage on the same plugs have this problem) and white ends on your plugs and your running lean.
     
  3. Mar 30, 2010 at 7:06 PM
    #3
    winyah

    winyah [OP] Member

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    i checked the plugs they look fine, but i might change them any way to see if that will work but I think its something else.
     
  4. Mar 30, 2010 at 7:08 PM
    #4
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    check your iac(idle air control valve) valve...located under or beside the throttle body. you may need to clean or replace it.
     
  5. Mar 31, 2010 at 2:57 AM
    #5
    skillet_83

    skillet_83 Active Member

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    brake cleaner for this?
     
  6. Mar 31, 2010 at 4:50 AM
    #6
    KRS1

    KRS1 Active Member

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    i am not all that familiar with 2000 tacomas so forgive me if i am wrong... but i had a similar problem with my old GMC 1500.... i troubleshot the issue and discovered it was the distributor and distributor cap...... its where all your spark plug wires come together and meet and a little dial if you will spins around and makes sure all the cylindars fire in order as long as everything else is good to go...i.e. wires and plugs... check for corrosion.... if the connection points are not clean then the effecte cylindars will not fire properly..... causing the engine to "bogg" down when the gas is pressed
     
  7. Mar 31, 2010 at 6:02 AM
    #7
    98tacoma27

    98tacoma27 :POOPCORN: Staff Member

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    Some do some don't. Cali Emission vehicles have a coil pack per cylinder where the Fed emissions ones shared a coil pack. (for the 2.4/2.7 anyway 1st gen. I think the 3.4l was the same also.)
     
  8. Mar 31, 2010 at 6:03 AM
    #8
    98tacoma27

    98tacoma27 :POOPCORN: Staff Member

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    No distributor on his truck. It's controlled by the ECU and crank sensor.
     
  9. Mar 31, 2010 at 8:12 AM
    #9
    Janster

    Janster Old & Forgetful

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    Dirty fuel injectors?
     
  10. Mar 31, 2010 at 8:28 AM
    #10
    garage_monkey

    garage_monkey You're dumber than stupid.

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    Did you check your fuel filter?
     
  11. Mar 31, 2010 at 8:35 AM
    #11
    Danosabre

    Danosabre Well-Known Member

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    +1 when was the last time you changed it?
     
  12. Mar 31, 2010 at 9:57 AM
    #12
    winyah

    winyah [OP] Member

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    Yea cleaned it out yesterday still having the same problem.
     
  13. Mar 31, 2010 at 10:33 AM
    #13
    Janster

    Janster Old & Forgetful

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    How exactly did you clean it?

    You'll get far better performance from a new filter than one that's been cleaned. You can't possibly get all the dirt out of a used filter unless it was designed to be cleaned (and they are not). Not saying this will be the answer to your problems, but you can't go wrong with a 'new' filter.

    Have you run fuel injector cleaner?

    How's you air filter?

    MAF sensor?
     
  14. Mar 31, 2010 at 2:00 PM
    #14
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    x2.....fuel filters are meant to be replaced...no real way to clean all the built up crap outta them.
     
  15. Mar 31, 2010 at 4:51 PM
    #15
    skillet_83

    skillet_83 Active Member

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  16. Apr 1, 2010 at 10:54 AM
    #16
    winyah

    winyah [OP] Member

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    well guys took it to the shop yesterday got it back today it was the MAF sensor. Cost $60 to fix bad thing is i took it off when i was working on it but didnt have any cleaner to clean it. They said all they did was clean it makes me feel bad now. Oh well its fixed guess thats all that matters.
     
  17. Apr 1, 2010 at 11:31 AM
    #17
    98tacoma27

    98tacoma27 :POOPCORN: Staff Member

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    That's cheaper than buying a new one. Glad you got it resolved.
     
  18. Apr 1, 2010 at 2:56 PM
    #18
    winyah

    winyah [OP] Member

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    they the guy said i was lucky i didnt have to buy a new one said they were high!
     
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