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Violent Shaking on Startup

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by Vinoh, Nov 30, 2013.

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  1. CR94

    CR94 Senior Member

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    Location:
    Northwestern S.C.
    Vehicle:
    2011 Prius
    Model:
    Two
    I avoid shutting down the car while the engine is cold or running, and haven't experienced the infamous "violent shaking" issue yet. However, twice on relatively cool mornings last week, for the first times, I heard a light tapping noise from the engine after cold starts. The first time, it started shortly after the engine started, while still in "P". The second time, it started about a minute later, as soon as the engine was under significant load on a hill. Both times, it faded away after a few seconds, and hasn't been heard since. Maybe a milder version of the same phenomenon, or ___ ???
     
    #21 CR94, Oct 27, 2015
  2. prevee5

    prevee5 Member

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    Location:
    Monrovia, California
    Vehicle:
    2012 Prius v wagon
    Model:
    Five
    I just experienced this phenomenon the other day. And yes, the night before, I did move my car up the driveway about 50 feet. The engine did come on but only for a few seconds before I shut off the power. The temp was around 45 F. I experienced the shaking the next morning. Was quite frightened and shut it off. Powered back on right after. Continued shaking about 10 seconds or so then was normal thereafter.

    I see that a few of you out there experienced this and can explain when it happens. But does Anyone know WHY the car does that? I find it very strange. I thought there was a cat or possum in my engine compartment....or a belt was broken.

    Anyone?

    2012 Prius v, Five
    45K miles
     
    #22 prevee5, Dec 30, 2015
    bisco likes this.
  3. bisco

    bisco cookie crumbler

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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    unburned hydrocarbons in the intake manifold, iirc.
     
    #23 bisco, Dec 30, 2015
  4. minnyprius

    minnyprius Member

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    Vehicle:
    2012 Prius Plug-in
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    Plug-in Advanced
    Yep, just happened to me, and I know what I did to cause it. Good to learn it early (just bought the car 6 days ago)! You can imagine my thoughts of having bought a basket-case... hehehe. All's well that warms well...

    Happy New Year!
     
    #24 minnyprius, Dec 30, 2015
    orenji and parnami like this.
  5. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
    Oct 17, 2010
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    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    #25 Mendel Leisk, Dec 30, 2015
  6. minnyprius

    minnyprius Member

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    Plug-in Advanced
    I might take mine in tomorrow, since I have the day off... Just to make it known, see if they're willing to do the intake manifold... Couldn't hurt...
     
    #26 minnyprius, Dec 30, 2015
  7. orenji

    orenji Senior Member

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    Just let it warm up and cycle off before shutting down. If its a 2015 it should have the latest manifold.
     
    #27 orenji, Dec 31, 2015
  8. minnyprius

    minnyprius Member

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    Plug-in Advanced
    It's a 2012...
     
    #28 minnyprius, Dec 31, 2015
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