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New owner. Turn off engine whirl sound

Discussion in '5th Gen 4Runners (2010-2024)' started by zwniana, Apr 2, 2019.

  1. Apr 2, 2019 at 1:15 PM
    #1
    zwniana

    zwniana [OP] New Member

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    New owner here. When I turn off the engine for about one or two seconds I get a whirling sound in the engine that Reba/whistles hi and then turns off. The sound is similar to that of what a turbo engine makes when it engages.

    Is this the fan turning off? Or something in the engine?
     
  2. Apr 2, 2019 at 1:56 PM
    #2
    4X4Runner

    4X4Runner The Anti Pro, Pro! Staff Member

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    The left coast
    Vehicle:
    2017 4Runner Smashed Ass Edition
    Mad driver mod. OME Suspension. 285/70R17 BFG AT KO2
    There is also a vapor recovery system that’ll kick on periodically after the vehicle is turned off. If you’re ever near it after it’s been sitting a while and you hear a whirring noise, it’s perfectly normal.
     
    wmdtech, WallyT4R and 7385 like this.
  3. Apr 2, 2019 at 2:06 PM
    #3
    4runningMan

    4runningMan New Member

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    I think this happens like 4-8 hours after shut down. Noise comes from near the gas tank.
     
    wmdtech and WallyT4R like this.
  4. Apr 2, 2019 at 2:58 PM
    #4
    j cat

    j cat New Member

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    spacer lift front 1inch
    in the engine area when the engine is turned off most times it is the air injection pump
     
    417tundra and WallyT4R like this.
  5. Apr 2, 2019 at 5:00 PM
    #5
    rsimi72

    rsimi72 New Member

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    Mine does it too. It’s normal.
     
  6. Apr 2, 2019 at 5:06 PM
    #6
    2016Pro

    2016Pro Why all of the Pro hate?

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    This, in the engine bay the secondary air pump makes a whooshing noise.
     
  7. Apr 2, 2019 at 7:33 PM
    #7
    zwniana

    zwniana [OP] New Member

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    thank you. Never had a car sound like it was something reving up before shutting down when engine was turning off. Sounds kind of cool as if its releasing pressure after that exhausting drive :)
     
  8. Apr 2, 2019 at 8:06 PM
    #8
    Riding Dirty

    Riding Dirty Sinner; saved by grace

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    Is plasti-dip a mod?!
    Mine does it too, must be the flux capacitor shutting down.
     
    4Runner1845 and 2016Pro like this.
  9. Apr 2, 2019 at 8:36 PM
    #9
    WallyT4R

    WallyT4R New Member

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    toy33 likes this.
  10. Apr 3, 2019 at 4:40 AM
    #10
    DGP1961

    DGP1961 New Member

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    No seriously stupid question but do they really have one? I'll need to look tonight. :bananadance::ohsnap:
     
    Riding Dirty[QUOTED] likes this.
  11. Apr 3, 2019 at 7:50 AM
    #11
    Hyper15125

    Hyper15125 Headlight Retrofitting Hobbyist

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  12. Apr 4, 2019 at 9:24 AM
    #12
    4Runner1845

    4Runner1845 New Member

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    Mine does it also.
     
  13. Apr 4, 2019 at 10:12 AM
    #13
    OCRunning

    OCRunning New Member

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    Is this mod worth the hassle? Thanks folks
     
  14. Apr 4, 2019 at 12:52 PM
    #14
    4X4Runner

    4X4Runner The Anti Pro, Pro! Staff Member

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    The left coast
    Vehicle:
    2017 4Runner Smashed Ass Edition
    Mad driver mod. OME Suspension. 285/70R17 BFG AT KO2
    The unit filter mod? Depends. Want to spend $20-$25 on a filter and a few minutes time or $300+ for a replacement pump?
     
    WallyT4R likes this.
  15. Apr 4, 2019 at 1:08 PM
    #15
    OCRunning

    OCRunning New Member

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  16. Apr 4, 2019 at 1:51 PM
    #16
    4X4Runner

    4X4Runner The Anti Pro, Pro! Staff Member

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    The left coast
    Vehicle:
    2017 4Runner Smashed Ass Edition
    Mad driver mod. OME Suspension. 285/70R17 BFG AT KO2
    I’ve read threads where the filter element begins to disintegrate and foul the pump requiring it to be replaced. Some have lasted 50k, 60k and 80k or more before failure and some in the 40k range
     

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