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Sound from Engine Compartment on Shut Off

Discussion in 'Technical Chat' started by Sargechris, Sep 16, 2012.

  1. Sep 16, 2012 at 5:49 PM
    #1
    Sargechris

    Sargechris [OP] Well-Known Member

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    I've only got 150 miles on my Taco. When I shut off the engine there is a rather loud wheezing/wind-down noise that emits from the engine compartment. Stock V6.

    Just curious--is this normal? It sounds kinda goofy...

    Thanks

    :cheers:
     
  2. Sep 16, 2012 at 6:43 PM
    #2
    aptech

    aptech Jetfixer

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    no. have it checked your under warranty:)
     
  3. Sep 16, 2012 at 6:44 PM
    #3
    aptech

    aptech Jetfixer

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    or is that the air pump they put on the 13s.
     
  4. Sep 16, 2012 at 6:46 PM
    #4
    JTacoma

    JTacoma Well-Known Member

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    deck plate mod, k&n filter, Alpine stereo, alarm system, Hella 700 ff, brush guard, Bilstein 5100
    My 95 4 cylinder does this and I haven't been able to identify what is causing the noise.
     
  5. Sep 16, 2012 at 6:46 PM
    #5
    Steves104x4

    Steves104x4 Well-Known Member

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    BUCKLE UP! It makes it harder for Aliens to pull you out of your Truck.
    A/C, perhaps.
     
  6. Sep 16, 2012 at 6:49 PM
    #6
    Highland Logan

    Highland Logan UBIQUE

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    Could be this, which is found in the first couple pages of the manual.
    Frank
     
  7. Sep 16, 2012 at 6:56 PM
    #7
    Sargechris

    Sargechris [OP] Well-Known Member

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    BFG AT KO 265/70R17 Tires, SnugTop Sport Hi Liner, Yakima Racks / Load Warrior, WeatherTech Floor Liners, BedRug/BedMat
    Thanks for the responses... I don't believe it's the 5-hour noise--it happens immediately on shut-off. Very noticeable. Hard to describe, but maybe I could best describe it like this: If it was a turbo, I'd think it was the turbo winding down... (plus a few additional noises)..

    I don't think it's the AC---I turn all systems off before shutting off the engine (old habit).

    The air pump does sound like a candidate.

    I'm gonna try to get to the Dealer this week. I will advise.

    :cheers:
     
  8. Sep 16, 2012 at 7:00 PM
    #8
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Probably the smog pump. Turn the key on for a bit then off and see if you hear it.
     
  9. Sep 16, 2012 at 9:27 PM
    #9
    maddiedaddy

    maddiedaddy Member

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    I am hearing this too and curious on my 2013 Tacoma I got today new. A definite electric winding up noise for 2 or 3 seconds right after shutting off. Any ideas? 4x4 v6 trd. Thanks!
     
  10. Sep 16, 2012 at 9:43 PM
    #10
    whippersnapper02

    whippersnapper02 Well-Known Member

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  11. Sep 17, 2012 at 6:58 AM
    #11
    maddiedaddy

    maddiedaddy Member

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    Thank you! If sure did sound 'on purpose' but just odd.
     
  12. Sep 21, 2012 at 11:36 AM
    #12
    TurboSportTSi

    TurboSportTSi New Member

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    Any updates? My 2013 does the same thing.
     
  13. Sep 21, 2012 at 12:06 PM
    #13
    whippersnapper02

    whippersnapper02 Well-Known Member

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  14. Sep 21, 2012 at 12:18 PM
    #14
    Amo-cat3

    Amo-cat3 Wizard Sleeve Master

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    Hey Whipper, think it could be the smog pump? :D
     
  15. Sep 21, 2012 at 12:29 PM
    #15
    TexAggie

    TexAggie Well-Known Member

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    Mine does the same. Sounds almost like a turbo. I was going to run it by the dealer and ask just in case but since everyone's I doing it I bet it's normal.
     
  16. Sep 21, 2012 at 12:33 PM
    #16
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Nah. Something is terrible wrong with everyone's truck and they should just get out and run very far away from their truck.
     
  17. Sep 21, 2012 at 12:39 PM
    #17
    2012 Tacoma

    2012 Tacoma Well-Known Member

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    My 2012 has the pump that runs when I start it, apparently it blows air across the cats...If you immediately shut it off, the pump continues to run for a few seconds. If you don't turn off the engine the pump shuts off in about 5 seconds it never turns on again.
     
  18. Sep 21, 2012 at 4:01 PM
    #18
    Sargechris

    Sargechris [OP] Well-Known Member

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    Made it to the Dealer today.. Had the Tech listen.. right-away he said it was the "air induction system" and a normal sound... I asked if, in layman's terms, it was the smog pump? He said it was.

    All is OK per the Dealer...

    Hoo-Ray! (but I still don't enjoy the sound!).

    ;)
     
  19. Sep 21, 2012 at 4:12 PM
    #19
    whippersnapper02

    whippersnapper02 Well-Known Member

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  20. Sep 21, 2012 at 4:21 PM
    #20
    Sargechris

    Sargechris [OP] Well-Known Member

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    :thumbsup: And the winner is: whippersnapper!! If we would only listen....
     
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