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Loud engine noise

Discussion in 'Gen 2 Prius Technical Discussion' started by Laurenlauren1990, Sep 28, 2019.

  1. Laurenlauren1990

    Laurenlauren1990 New Member

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    My 2008 Prius has been making a loud noise when engine cuts on/battery is charging.
    I can’t really pinpoint where it’s coming from I just know it’s louder than it used to be.
    No driving issues and no check engine lights. It’s just loud.
    230k miles, regular maintenance and oil changes.
    Any ideas?
     
  2. dolj

    dolj Senior Member

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    Maybe you have corrosion eating away your exhaust system???
     
  3. Skibob

    Skibob Senior Member

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    Or stolen Cat?
     
  4. edthefox5

    edthefox5 Senior Member

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    Ever run the motor dry of engine oil or so low nothing showing on the dipstick?
     
  5. bisco

    bisco cookie crumbler

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    heat shield/motor mount?
     
  6. w2co

    w2co Member

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    Better change the oil and look real close for metal, same with the transaxle, it could be MG1 or MG2 stator broke lose and is rubbing the case! In that case you will probably find bits of wire and insulation in the oil...but then again you would've had some serious DTC's by then as well.