What's this Noise

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by dongfang, May 11, 2018.

  1. dongfang

    dongfang Junior Member

    Joined:
    May 5, 2014
    36
    5
    0
    Vehicle:
    2006 Prius
    Model:
    II
    I have a 2006 Gen2 Prius (271K miles), for about 5 years. Since last summer, the fuel economy become worse, from annual 46 MPG to Winter 30 MPG & Spring 36MPG. I noticed there is some grinding noise that the sound volume grow with car speed.

    Today I lift each side front wheels, and I'm able to identify the noise come from left front wheel.

    What this noise it is? (I believe it is not bearing noise, as I have replaced both front bearing in recent years.)

    The sound Video:

    Right front wheel Lift (Good):

    Left front wheel Lift (Noisy):
     
    #1 dongfang, May 11, 2018
  2. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    16,601
    8,478
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    Sounds like something is rubbing
     
    #2 JC91006, May 12, 2018
    jerrymildred likes this.
  3. dongfang

    dongfang Junior Member

    Joined:
    May 5, 2014
    36
    5
    0
    Vehicle:
    2006 Prius
    Model:
    II
    But the sound was there for several months...
     
    #3 dongfang, May 12, 2018
  4. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    11,517
    14,132
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius
    Model:
    Two
    I agree.
     
    #4 jerrymildred, May 12, 2018
  5. RRxing

    RRxing Senior Member

    Joined:
    Jul 7, 2009
    2,526
    1,801
    0
    Location:
    NEPA
    Vehicle:
    Other Hybrid
    Model:
    Limited
    Looks like your parking brake is on...
     
    #5 RRxing, May 12, 2018
  6. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    11,517
    14,132
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius
    Model:
    Two
    I sure hope so. He had one front wheel off the ground so it would rotate. ;)
     
    #6 jerrymildred, May 12, 2018
  7. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    16,601
    8,478
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    I would make sure you caliper glide pins are properly lubricated
     
    #7 JC91006, May 12, 2018
    dongfang, jerrymildred, Raytheeagle and 1 other person like this.
  8. dongfang

    dongfang Junior Member

    Joined:
    May 5, 2014
    36
    5
    0
    Vehicle:
    2006 Prius
    Model:
    II
    Thank you for your information! I will check it.
     
    #8 dongfang, May 12, 2018
(You must log in or sign up to post here.)