'09 Prius now making a strange cycling noise pattern?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Christopher Jones, Feb 26, 2015.

  1. Christopher Jones

    Christopher Jones Junior Member

    Joined:
    Feb 25, 2015
    12
    3
    0
    Vehicle:
    2009 Prius
    Model:
    V
    the noise is not the inverter water pump could it be a 3 way valve?
     
    #1 Christopher Jones, Feb 26, 2015
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    111,187
    50,614
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    is it the brake accumulator?
     
    #2 bisco, Feb 26, 2015
  3. Christopher Jones

    Christopher Jones Junior Member

    Joined:
    Feb 25, 2015
    12
    3
    0
    Vehicle:
    2009 Prius
    Model:
    V
    it is not the break modulator. that is a different noise. i am having issues loading the sound file. to thread.
     
    #3 Christopher Jones, Feb 26, 2015
  4. Christopher Jones

    Christopher Jones Junior Member

    Joined:
    Feb 25, 2015
    12
    3
    0
    Vehicle:
    2009 Prius
    Model:
    V
     
    #4 Christopher Jones, Feb 26, 2015
  5. Christopher Jones

    Christopher Jones Junior Member

    Joined:
    Feb 25, 2015
    12
    3
    0
    Vehicle:
    2009 Prius
    Model:
    V
    noise @
     
    #5 Christopher Jones, Feb 26, 2015
  6. Eclipse1701d

    Eclipse1701d Prius Enthusiast

    Joined:
    May 12, 2011
    645
    224
    0
    Location:
    Nature coast, Florida
    Vehicle:
    2016 Prius
    Model:
    Three Touring
    It sounds like the Coolant Thermos pump is stuck on.
     
    #6 Eclipse1701d, Feb 26, 2015
    Christopher Jones likes this.
  7. PriusGuy32

    PriusGuy32 Prius Driver Extraordinaire

    Joined:
    Sep 10, 2012
    1,417
    513
    0
    Location:
    Harrison Township, Michigan
    Vehicle:
    2015 Prius
    Model:
    Four
    o_O

    When is it making this noise? In ready mode? Or when the car is off?
     
    #7 PriusGuy32, Feb 26, 2015
  8. Christopher Jones

    Christopher Jones Junior Member

    Joined:
    Feb 25, 2015
    12
    3
    0
    Vehicle:
    2009 Prius
    Model:
    V
    the noise occurs in ready mode, after coolant has cycled through the system.
     
    #8 Christopher Jones, Feb 26, 2015
  9. PriusGuy32

    PriusGuy32 Prius Driver Extraordinaire

    Joined:
    Sep 10, 2012
    1,417
    513
    0
    Location:
    Harrison Township, Michigan
    Vehicle:
    2015 Prius
    Model:
    Four
    Wow.
     
    #9 PriusGuy32, Feb 26, 2015
  10. Christopher Jones

    Christopher Jones Junior Member

    Joined:
    Feb 25, 2015
    12
    3
    0
    Vehicle:
    2009 Prius
    Model:
    V
    Could that be due to a faulty or failing 3way cooling valve?
     
    #10 Christopher Jones, Feb 26, 2015
  11. Christopher Jones

    Christopher Jones Junior Member

    Joined:
    Feb 25, 2015
    12
    3
    0
    Vehicle:
    2009 Prius
    Model:
    V
    What controls/regulates turning on and off the coolant thermos pump? Does the 3way valve control the switching on and off of the Coolant Thermos Pump? Is so could that valve be the issue.
     
    #11 Christopher Jones, Feb 26, 2015
  12. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    111,187
    50,614
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    how many miles on her?
     
    #12 bisco, Feb 26, 2015
  13. Christopher Jones

    Christopher Jones Junior Member

    Joined:
    Feb 25, 2015
    12
    3
    0
    Vehicle:
    2009 Prius
    Model:
    V
    When I bought the car it had only 7 miles on it. I have since put 167,000 miles on it and have learned how to clearly distinguish a normal sound from an abnormal pattern of sound. This is an abnormal pattern in that it occurs for different intervals and at different times but only after the car has been warned up.
     
    #13 Christopher Jones, Feb 26, 2015
  14. enviroprius

    enviroprius Junior Member

    Joined:
    Nov 16, 2006
    91
    12
    0
    Location:
    Sonoma, CA
    Vehicle:
    2007 Prius
    Model:
    N/A
    It's your coolant control valve. I had the same problem last year.
     
    #14 enviroprius, Feb 27, 2015
    Christopher Jones likes this.
(You must log in or sign up to post here.)