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Prius rough idle and car shaking after agressive car wash

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by mystickid, Feb 19, 2016.

  1. mystickid

    mystickid Junior Member

    Joined:
    Nov 1, 2015
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    Location:
    Chicago
    Vehicle:
    2008 Prius
    Model:
    Three
    Hi guys,

    I took my 2008 Prius through a very aggressive robotic tunnel car wash and as soon as I left the car and drove off I noticed that the car was idling very rough can has been continuing to do so for the past three days. Every time I drive the car, even if I'm not accelerating and the car is just decelerating, the car seems to have a very rough idle/Shake/sputter to it. It idles rough, it decelerates rough when foot off the gas peddle , and it's making a lot more noise than usual.it used to decelerate quietly before the car wash. And this car wash was whack, like hyper pressurized... I mean when it was spraying down the windows it felt like the windshield was being shot at lol.

    I just bought this lovely car a few months ago. Any thoughts guys???
     
    #1 mystickid, Feb 19, 2016
  2. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
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    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    Know exactly what' wrong. You swamped the windshield water dam and the water over ran the water dam seal and you soaked the top of the engine and water got into the spark plug holes and shorted out a spark ignitor.

    And your in the wrong forum. This is the General forum. You need to post this in the G2 Maintenance and troubleshooting forum.
     
    #2 edthefox5, Feb 20, 2016
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
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    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    Is the check engine light on?

    You need to remove the four spark igniters so that you can shoot some compressed air into the spark plug wells to blow any moisture out. Clean the plastic body of each spark igniter before reinstalling. If you see any cracking or burn / rust marks on the body, replace the igniter.
     
    #3 Patrick Wong, Feb 20, 2016
  4. mrshred

    mrshred Junior Member

    Joined:
    May 19, 2009
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    Location:
    New Jersey
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    TSB EG063-05 issued December 16, 2005 - leak in the center seam of the plastic cowl cover below the windshield. In the summer of 2009, water leaking in shorted out two igniters on my 2005. Maybe they fixed it / sealed it better by 2008. Dealer put a shiny bead of caulk over the seam - been fine ever since.
     
    #4 mrshred, Feb 24, 2016
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