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Strange noise when turning off truck

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Minny Taco, Apr 26, 2016.

  1. Apr 26, 2016 at 11:49 AM
    #1
    Minny Taco

    Minny Taco [OP] For the Horde!

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    2015 Off-Road.. When I turn the key off it makes a "whirring" sound for a few seconds. I don't believe there's a problem, I'm just curious to know what it is. Is it just venting accumulated awesomeness?
     
  2. Apr 26, 2016 at 11:50 AM
    #2
    Chris24

    Chris24 Well-Known Member

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    Normal...on the newer trucks it's something to do with emissions i believe.
     
  3. Apr 26, 2016 at 11:54 AM
    #3
    JeffP213

    JeffP213 I used to do mods. I still do, but I used to, too

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    Air induction system aka smog pump. Mine does it too
     
  4. Apr 26, 2016 at 11:58 AM
    #4
    Gearheadesw

    Gearheadesw Well-Known Member

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    so many it turned into a GMC
    My '15 OR 4X4 wizzes, pops, and hisses when you shut it off, all emission stuff.
     
  5. Apr 26, 2016 at 12:00 PM
    #5
    Minny Taco

    Minny Taco [OP] For the Horde!

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    OK that explains it, thanks.

    Silver Sky Metallic FTW!
     
    JeffP213 likes this.
  6. Apr 26, 2016 at 1:19 PM
    #6
    glitcheffect7

    glitcheffect7 Well-Known Member

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    2014 Tacoma 6 cyl 6 spd sr5 access cab
    None, stock
    My 2014 makes a sort of clunk sound. I've listened to other tacomas from many different years and seems to be present on all of them.
     
  7. Apr 26, 2016 at 2:49 PM
    #7
    PackCon

    PackCon Well-Known Member

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    It's the Storm Trooper mode powering down
     
    ManBeast likes this.
  8. Apr 26, 2016 at 3:15 PM
    #8
    nd4spdbh

    nd4spdbh Well-Known Member

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    2012+ V6 trucks saw the introduction of the Air injection pump for emissions. (I4 trucks had them since 05). In 2013 the system saw the introduction of the shutdown purge (which is what you are hearing). This is to help clear any moisture that may of built up in the pump and exhaust header valves so they do not fail.

    The Air injection pump only runs on startup (2012+) and shutdown (2013+) v6 trucks and only does it on startup at temps above ~ 38*F
     
    Minny Taco [OP] likes this.
  9. Apr 26, 2016 at 4:07 PM
    #9
    shakerhood

    shakerhood Well-Known Member

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    Yep normal noise
     
  10. Apr 26, 2016 at 6:05 PM
    #10
    I3uller

    I3uller Well-Known Member

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    Tacoma world ladies and gentlemen. What a place.
     
    NE4now, Lyleh133 and Minny Taco [OP] like this.

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