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Is it normal for the throttle body to be slightly ajar when not powered up?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by saugus, May 17, 2019 at 3:24 PM.

  1. May 17, 2019 at 3:24 PM
    #1
    saugus

    saugus [OP] Well-Known Member

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    I have removed and cleaned the throttle body and have to physically push my finger on the valve plate slightly to close it 100%. It bounces back to ajar when released. Is that standard? I guess I'm wondering if the spring action is supposed to keep it fully closed or if the actuator does that. Maybe noob question.

    2.7 L
     
  2. May 17, 2019 at 6:38 PM
    #2
    Depoxy

    Depoxy Well-Known Member

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    Mine does it too. I think it's like that so the engine has air when starting
     
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  3. May 17, 2019 at 7:03 PM
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    6 gearT444E

    6 gearT444E CEO & CFO @BPF

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    yes, it's for the fail-safe so you can drive it in limp mode if the ECM or throttle body actuator fails.
     
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  4. May 17, 2019 at 10:24 PM
    #4
    b_r_o

    b_r_o get em loaded, get em high, get em off

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    If the CEL is not on and the engine idle speed is normal on startup i wouldnt worry about it
     
  5. May 19, 2019 at 3:58 PM
    #5
    saugus

    saugus [OP] Well-Known Member

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    thanks, it's cleaned up nicely now. It idles fine.
     
  6. May 19, 2019 at 7:07 PM
    #6
    httuner

    httuner Well-Known Member

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    This is also done on purpose to prevent the throttle body from freezing shut in place during cold winters in the event you have some moisture in the air intake system. It does happen and I've seen it happen, damaging the electronic motor that opens and closes that throttle body; requiring you to replace the entire throttle body.

    Perfect example is windshield wipers; if you leave them down during a cold wet night and the wipers freezes to the windshield; you go turn them on in the morning and pop you break something; kinda the same ordeal. Just its most likely will happen to wipers and less likely for throttle bodies.
     
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