What the heck is this noise? Coolant pump? (video)

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by ericisbacchus, Apr 7, 2014.

  1. ericisbacchus

    ericisbacchus Junior Member

    Joined:
    Jul 1, 2007
    91
    9
    0
    Location:
    Kansas City
    Vehicle:
    2005 Prius
    Model:
    IV
    Hey folks. What the heck is this noise? Coolant pump?

    I talked to Toyota, and it sounded like they would help me fix it. But, I have to take it to the dealer. I took it to a place (not the dealer) call ToyTechs. I trust them, and they said it was the inverter pump.

    Dealer said it was some other pump.

    You have to turn it up a bit. It's sort of a woot, woot, woot, etc. sound.

    What say you, my friends?

     
    #1 ericisbacchus, Apr 7, 2014
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,200
    6,490
    0
    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    #2 Patrick Wong, Apr 7, 2014
  3. BubbaAllred

    BubbaAllred New Member

    Joined:
    Sep 16, 2016
    9
    6
    0
    Location:
    Winfield, PA
    Vehicle:
    2010 Prius
    Model:
    Two
    Was an answer for this ever discovered? My 2008 with 260k has the exact same noise as Ericisbacchus.

    Thanks,
    Billy
     
    #3 BubbaAllred, Sep 18, 2016
  4. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    16,632
    8,492
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    This is the sound of a bad 3 way coolant valve. If you scan your car for codes, you should get p1121
     
    #4 JC91006, Sep 19, 2016
  5. BubbaAllred

    BubbaAllred New Member

    Joined:
    Sep 16, 2016
    9
    6
    0
    Location:
    Winfield, PA
    Vehicle:
    2010 Prius
    Model:
    Two
    I checked the coolant level and it was low. I added about a quart. I'll see if the noise goes away. Thanks for the help!

    Billy
     
    #5 BubbaAllred, Sep 19, 2016
  6. exstudent

    exstudent Senior Member

    Joined:
    Jul 11, 2009
    2,214
    905
    0
    Location:
    Torrance, CA
    Vehicle:
    2007 Prius
    Added coolant to thee engine or inverter loop?
    Was the engine loop recently serviced? Drain/fill or a part replaced? You may still have air that needs to get purged out. Many posts on getting air pockets removed. Do a search w/in PC or an Internet search.
     
    #6 exstudent, Sep 19, 2016
(You must log in or sign up to post here.)