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CVT Trans. Bump

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by apinson32, Mar 7, 2011.

  1. apinson32

    apinson32 Junior Member

    Joined:
    Mar 7, 2011
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    Location:
    Newnan, GA
    Vehicle:
    2008 Prius
    Model:
    N/A
    So i bought my 2008 Prius beginning of May 2010, certified with 25k on it. i'm about to hit 43,500 which is coming up on a service with my service plan i purchased.

    The problem i've been having is whenever i'm driving down the road, and i start out accelerating and i get up to around 45-50 mph, my car makes this slight bump, almost like an older car when it shudders into overdrive, sometimes it's barely noticeable and sometimes it's kinda rough, wondering if i should ask the dealer for a transaxle change? The problem started earlier this winter, i've never had it before.

    Also my mom owns a 2007 Prius with almost the exact mileage of mine, and she doesn't get the "bump" i'm experiencing.

    Let me know what you guys think.

    Thanks
    Alex.
     
    #1 apinson32, Mar 7, 2011
  2. uart

    uart Senior Member

    Joined:
    Sep 7, 2009
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    Location:
    Australia
    Vehicle:
    2005 Prius
    Hi apinson32. Does it only happen when you're gliding (electric mode) or does it also happen under engine power?

    There is a really slight "bump" at 42 MPH when you're gliding, due to the engine rotation kicking in (or out if you're decelerating). That's 100% normal but your situation sounds a little different.
     
    #2 uart, Mar 8, 2011
  3. apinson32

    apinson32 Junior Member

    Joined:
    Mar 7, 2011
    4
    0
    0
    Location:
    Newnan, GA
    Vehicle:
    2008 Prius
    Model:
    N/A
    It's whenever the engine is running, ive watched the current MPG and it seems to do the weird feeling around 38-40 MPG as I'm letting off the gas from accelerating up to speed. The engine cutting on after 42 mph is a different kind of bump. There's no bump at all in ev mode.
     
    #3 apinson32, Mar 8, 2011
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