Humming sound coming from the back. *Video*

Discussion in 'Gen 3 Prius Technical Discussion' started by Björn Andersson, Sep 5, 2019.

  1. Björn Andersson

    Björn Andersson New Member

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    I got a gen 3 with 120k miles on it.
    At around 50 mph I get this humming sound coming from the back.
    I dismounted the left wheel and brakes to see if anything was out of the ordinary.
    Made a little video of what I found. Nothing is touching the disc.



    It shouldn´t sound like this right? Anyone knows what the rattling sound is?
     
  2. PriusCamper

    PriusCamper Senior Member

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    Well it doesn't sound right but that could be any number of things... Finding the source of the sound will define how big of a concern it is? Can you give us more info about where the exact place the sound is loudest?
     
  3. Mendel Leisk

    Mendel Leisk Senior Member

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    Wheel bearing failing?

    The caliper mounting bracket is incredibly rusted.

    The front face of the rotor has slight rusty zones towards the outer and inner edges, suggesting not quite full pad contact. How does the rear side of the rotor look, similar?
     
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  4. bisco

    bisco cookie crumbler

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    try rotating the tires
     
  5. PriusCamper

    PriusCamper Senior Member

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    I tried that with my shoes once, but they didn't fit on my back feet...
     
  6. Mendel Leisk

    Mendel Leisk Senior Member

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    I managed to go out the door with shoes from two different pairs. Just the once. Hey they were very similar.
     
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  7. PriusCamper

    PriusCamper Senior Member

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    You've been trying to live that one down for a while haven't you... Maybe you could blame it on PTSD from when the beautiful lady inspired you to use your foot to stop a car from rolling?
     
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  8. Mendel Leisk

    Mendel Leisk Senior Member

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    if you're thinking about the PriusChatter who relayed that tale (today), that was not me, lol.
     
  9. Björn Andersson

    Björn Andersson New Member

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    It starts at around 50 mph and gets louder and louder the faster I drive.
     
  10. dig4dirt

    dig4dirt MoonGlow

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    Bunch of rust being throw around inside the rotors?
     
  11. bisco

    bisco cookie crumbler

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    probably a bearing
     
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