Rattling/marble sound at low RPM (not related to TSB?)

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by wheelsup, May 10, 2016.

  1. wheelsup

    wheelsup Junior Member

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    2010 Prius with 100,020 miles on it. Car has had regular oil changes on schedule with M1 0W-20.

    Noticed engine rattling/marble sound at low RPM under load a few weeks ago. This is not just when the engine is cold or on startup. Sometimes when hot. It's also not all the time. It's felt/heard over on the pax side. Just wondering where to go (dash/engine mount?). I did download the TSB for rattling but the local dealer has never heard of it even when they asked their tech (?!? How is that possible?). It's a good dealer so that surprises me.

    Thoughts on what to look at? No codes so far.
     
    #1 wheelsup, May 10, 2016
  2. wheelsup

    wheelsup Junior Member

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    OK wife also reports it happened to her while not moving. It's normally experienced under load however.
     
    #2 wheelsup, May 10, 2016
  3. ExMachina08

    ExMachina08 Junior Member

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    Video would be helpful. Does the noise happen when the ICE is running? Could be a baffle in the muffler has come loose or a heat shield with a rock in it.
     
    #3 ExMachina08, May 10, 2016
  4. wheelsup

    wheelsup Junior Member

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    Yes only with ICE on. Going to get under the car now and start looking.
     
    #4 wheelsup, May 10, 2016
  5. wheelsup

    wheelsup Junior Member

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    Sounds like it's solved. Found the hood holder bar (what is the official name for that anyway?) was not snapped into place and was resting on top of the engine. Makes sense.
     
    #5 wheelsup, May 10, 2016
  6. dorunron

    dorunron Senior Member

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    #6 dorunron, May 10, 2016
    Last edited: May 10, 2016
  7. ExMachina08

    ExMachina08 Junior Member

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    Gotta love those easy fixes!
     
    #7 ExMachina08, May 13, 2016
  8. Kaff

    Kaff New Member

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    Hey did you manage to find out what it is because I am having the same issue and is not the prop rood
     
    #8 Kaff, Apr 22, 2018
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