1. Attachments are working again! Check out this thread for more details and to report any other bugs.

"Click/clunk" sound when I hit the gas after letting go... what is the source of this noise?

Discussion in 'Gen 2 Prius Main Forum' started by SRQ, Nov 22, 2022.

  1. SRQ

    SRQ Member

    Joined:
    Jan 25, 2013
    149
    55
    0
    Vehicle:
    2008 Prius
    Model:
    N/A
    So when I let go of the gas, and hit the gas again, I can hear a "click/clunk" noise as power goes to the wheels. Sounds like it's coming from the front. Anyone experience something similar and find out what it was? Or is this too vague?
     
    #1 SRQ, Nov 22, 2022
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,133
    50,050
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    might be a cv joint, idk
     
    #2 bisco, Nov 23, 2022
    Tim Jones likes this.
  3. Tim Jones

    Tim Jones Senior Member

    Joined:
    Jul 17, 2018
    1,728
    559
    3
    Location:
    SE Texas
    Vehicle:
    2011 Nissan LEAF
    Model:
    ----USA----
    Or transmission problems.
    Is it shifting through all of the gears ok? : )
     
    #3 Tim Jones, Nov 23, 2022
  4. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    7,035
    2,790
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    I always assumed that it was a contactor (big relay) opening or closing when going from regen to power to the wheels.
    You do know that it doesn't HAVE "gears" like a conventional transmission........right ??
     
    #4 sam spade 2, Nov 23, 2022
  5. Tim Jones

    Tim Jones Senior Member

    Joined:
    Jul 17, 2018
    1,728
    559
    3
    Location:
    SE Texas
    Vehicle:
    2011 Nissan LEAF
    Model:
    ----USA----
    Just checking......... : )
     
    #5 Tim Jones, Nov 24, 2022
  6. dolj

    dolj Senior Member

    Joined:
    May 14, 2012
    7,855
    3,967
    0
    Location:
    Wellington, New Zealand
    Vehicle:
    2007 Prius
    Model:
    N/A
    It pays not to assume. No relays involved in OP's post. I'm not really even sure of what you're thinking relay-wise. I would take a look at the lower engine mount.
     
    #6 dolj, Nov 24, 2022
  7. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    7,035
    2,790
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    It might depend on how sensitive your hearing IS.......and what you consider "abnormal".

    My C has done that occasionally since new; both of them actually.
    But the noise I hear/feel might not be the same as what he is asking about.

    Regardless of what kind of drive train you are dealing with, there should be some "slack" in the drive mechanism.
    Going from engine braking to engine power might make a noise in any vehicle........if you catch it just right.

    Some assumptions end up being right........and some wrong.
     
    #7 sam spade 2, Nov 24, 2022
(You must log in or sign up to post here.)