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Engine Shimmey during maintenance throttle

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by teamneon, Dec 7, 2015.

  1. teamneon

    teamneon Junior Member

    Joined:
    Feb 18, 2014
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    Location:
    Western KY
    Vehicle:
    2010 Prius
    Model:
    II
    This just started 2 weeks ago and has progressively gotten worse.
    I can take off fine, but when i ease off the throttle to level out my speed (it can be at 30mpg or 70mph it doesn't matter) I get a shimmey in the engine. If i give it gas or let totally off the throttle it goes away.
    I've even heard some clanking a few times. Almost feels like a car with a broke engine mount...other than the fact it only does it when leveling out.
    I had a local shop just check the basics underneath, axles, mounts etc and they said it looked fine.
    No engine light so I dont feel its a sensor. Kinda of makes me think the link between the electric motor and the gas motor is sending mixed signals. Anyone heard of this before?
    Taking it to toyota this week I guess.
     
    #1 teamneon, Dec 7, 2015
  2. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
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    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Not understanding "during maintenance throttle" in the title. Did you do a throttle body cleaning? Or is it just a misunderstood phrase, similar to saying you're just pressing hard enough on the gas to maintain speed? I'm guessing the latter.
     
    #2 Mendel Leisk, Dec 9, 2015
  3. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    how many miles on her?
     
    #3 bisco, Dec 9, 2015
  4. caedward

    caedward Junior Member

    Joined:
    Aug 9, 2014
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    Location:
    Fort Worth, Texas
    Vehicle:
    2014 Prius
    Model:
    Two
    Possibly a weak ignition coil?
     
    #4 caedward, Dec 9, 2015
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