Knocking noise

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Randy_kirkpatrick, Jul 14, 2023.

  1. Randy_kirkpatrick

    Randy_kirkpatrick New Member

    Joined:
    Jul 14, 2023
    3
    0
    0
    Location:
    PA
    Vehicle:
    2006 Prius
    Model:
    N/A
    My 2006 Prius makes a loud knock when I stop and again when I start to move. We have replaced the cv axles, wheel bearing hub, and sway rods. Still making noise.

    My mechanic is out of ideas and has no idea where it is coming from.

    Can anyone help point me out?

    Thank you
    Randy K
     
    #1 Randy_kirkpatrick, Jul 14, 2023
  2. Randy_kirkpatrick

    Randy_kirkpatrick New Member

    Joined:
    Jul 14, 2023
    3
    0
    0
    Location:
    PA
    Vehicle:
    2006 Prius
    Model:
    N/A


    this is the sound
     
    #2 Randy_kirkpatrick, Jul 14, 2023
  3. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    16,640
    8,496
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    it seems the sound happens at the exact time the tire makes a full rotation.
     
    #3 JC91006, Jul 15, 2023
  4. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    11,584
    2,042
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    And I'm assuming it'll do the same going forward too correct? I mean a faster ticking noise comes from the wheel bearings many times when they're starting to go but a one clunk like that not so much and like the other poster said it seems to be exactly as the time the wheel is coming around again so I don't know if maybe your lug nuts are tightened incorrectly the wheels not all the way on seated but the lug nuts seem to be tight something along similar lines possibly and as the tire rotates around it clunks as that one spot tries to seat. Or something along those lines You could check backing plates on your brakes but I kind of doubt it doesn't sound like that.
     
    #4 Tombukt2, Jul 15, 2023
  5. PriusCamper

    PriusCamper Senior Member

    Joined:
    Mar 3, 2012
    11,870
    4,815
    0
    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    Change the transmission fluid after running car for a while with a high powered magnet attached to the drain bolt...
     
    #5 PriusCamper, Jul 15, 2023
(You must log in or sign up to post here.)