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High pitched "whirling" sound

Discussion in '1st Gen. Tacomas (1995-2004)' started by TacomaRyan15, Dec 16, 2019.

  1. Dec 16, 2019 at 11:30 AM
    #1
    TacomaRyan15

    TacomaRyan15 [OP] Well-Known Member

    Joined:
    Jan 5, 2018
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    185
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    Male
    Vehicle:
    2001 White Tacoma, Xtra Cab, 4x4, Auto, 4 cyl
    1. Toytec/Eibach 3 inch lift 2. Line-X truck bed 3. Line-X Fenders 4. Premium sound system 5. ARE Topper
    For the last year or so, I have been experiencing this crazy, "whirling" noise, coming from under the truck, right behind the cab. It is almost like a high pitched wind noise. Tough to describe.

    A couple things about it.
    1. Only happens when I press on the gas
    2. Generally only happens in morning or cold weather
    3. It doesn't seem like a mechanical noise (grinding, clunking)

    I have a sneaking suspicion it could be exhaust related, but I can't seem to pinpoint it. The truck runs fine and I don't have any real issues with it other than this.

    2001, SR5, Xtra Cab, 2.7 auto, 4x4, 190k miles.
     
  2. Dec 16, 2019 at 11:45 AM
    #2
    CD20H

    CD20H Well-Known Member

    Joined:
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    Ben
    North Texas
    Vehicle:
    2004 Double Cab TRD 4x4 Limited
    Magnuson Kompressor, OME lift kit, JBA Headers, junky Sony radio.
    You have a vacuum leak somewhere.
     
    OneWheelPeel likes this.
  3. Dec 16, 2019 at 11:46 AM
    #3
    OneWheelPeel

    OneWheelPeel Well-Known Member

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    Carrier Bearing
     
  4. Dec 16, 2019 at 12:42 PM
    #4
    TacomaRyan15

    TacomaRyan15 [OP] Well-Known Member

    Joined:
    Jan 5, 2018
    Member:
    #240340
    Messages:
    185
    Gender:
    Male
    Vehicle:
    2001 White Tacoma, Xtra Cab, 4x4, Auto, 4 cyl
    1. Toytec/Eibach 3 inch lift 2. Line-X truck bed 3. Line-X Fenders 4. Premium sound system 5. ARE Topper
    What would be the best way to confirm/diagnose? It does not come from the engine area. It is distinctly somewhere behind the cab.
     
  5. Dec 16, 2019 at 12:58 PM
    #5
    OneWheelPeel

    OneWheelPeel Well-Known Member

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    There are plenty of "Vaccum Lines" behind the cab, just sayin.
     
  6. Dec 16, 2019 at 1:16 PM
    #6
    TacomaRyan15

    TacomaRyan15 [OP] Well-Known Member

    Joined:
    Jan 5, 2018
    Member:
    #240340
    Messages:
    185
    Gender:
    Male
    Vehicle:
    2001 White Tacoma, Xtra Cab, 4x4, Auto, 4 cyl
    1. Toytec/Eibach 3 inch lift 2. Line-X truck bed 3. Line-X Fenders 4. Premium sound system 5. ARE Topper
    What would be the best way to diagnose?
     
  7. Dec 16, 2019 at 1:20 PM
    #7
    Martian__

    Martian__ Well-Known Member

    Joined:
    May 15, 2018
    Member:
    #253566
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    81
    Southern California
    I’m with the carrier bearing. Very common. U can lift the truck on jacks stands. Put it in drive with the wheels off the ground obviously...get underneath and listen around the carrier bearing area. Might need someone inside to give it a little gas or slowly push the brakes. Be careful not to slam on the brakes when slowing down.
     
  8. Dec 16, 2019 at 1:57 PM
    #8
    CD20H

    CD20H Well-Known Member

    Joined:
    Oct 25, 2014
    Member:
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    Messages:
    716
    Gender:
    Male
    First Name:
    Ben
    North Texas
    Vehicle:
    2004 Double Cab TRD 4x4 Limited
    Magnuson Kompressor, OME lift kit, JBA Headers, junky Sony radio.
    Get a couple of cans of carb cleaner. Put on the straw. With the engine running, spray all 1/4 and 3/8 vacuum hoses. Listen for the engine RPMs to change. RPMs that go up or down when you spray a particular hose.......investigate further.
     
  9. Dec 17, 2019 at 9:24 AM
    #9
    OneWheelPeel

    OneWheelPeel Well-Known Member

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    Search
     
  10. Dec 17, 2019 at 9:29 AM
    #10
    Rock Lobster

    Rock Lobster knows nothing, yet an expert in everything.

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    VF Tuned Desciple
    A crazy friend with a walkie talkie.

    barbie-sneaks-in-under-a-truck-under-the-dome-s2e8.jpg
     
    TacomaRyan15 [OP] likes this.

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