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Whining sound while driving

Discussion in 'Gen 3 Prius Main Forum' started by james wang 20, Nov 18, 2024 at 3:16 AM.

  1. james wang 20

    james wang 20 Junior Member

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    Did I get something wrong?There is a humming sound in the car while driving. It is very obvious when the speed is 50km/h, and it can also be heard at other speeds. It does not seem to be related to the accelerator. I took a video.


     
    #1 james wang 20, Nov 18, 2024 at 3:16 AM
    Last edited: Nov 18, 2024 at 4:39 AM
  2. ASRDogman

    ASRDogman Senior Member

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    Get something wrong???? What did you do?
    No whining heard, just the normal road/tire/wind noise.
     
    #2 ASRDogman, Nov 18, 2024 at 7:29 AM
    Mendel Leisk likes this.
  3. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    You did something?
     
    #3 Mendel Leisk, Nov 18, 2024 at 9:43 AM
  4. james wang 20

    james wang 20 Junior Member

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    This is a used car. I don't know what the previous owner did. I have adjusted the toe and lubricated the brake caliper guide and piston. I suspect the sound comes from a bearing. I wonder if this sound is normal?
    The whining sound is actually more obvious than in the video
     
    #4 james wang 20, Nov 18, 2024 at 2:04 PM
  5. ASRDogman

    ASRDogman Senior Member

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    "IF" it's a wheel bearing, you'll have to pull the axels, and press the brake pads back
    so you can rotate the hub(s) and listen for grinding. Though you might be able to skip pressing
    the pads back.
    With the rears, you also may be able to spin them without removing the calipers.
     
    #5 ASRDogman, Nov 18, 2024 at 4:16 PM
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