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

Broken Flywheel Noise

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by TwoPriusInTenn, Aug 26, 2019.

  1. TwoPriusInTenn

    TwoPriusInTenn Member

    Joined:
    Nov 27, 2015
    195
    59
    0
    Location:
    Tennessee
    Vehicle:
    2004 Prius
    Model:
    Base
    Does anyone have or know of a video of the noise a broken flywheel makes on a 2010 or 3rd Gen Prius?
     
    #1 TwoPriusInTenn, Aug 26, 2019
  2. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
    1,555
    660
    0
    Location:
    Central MO
    Vehicle:
    2012 Prius c
    Model:
    II
    Prob the dreaded engine knocking due to egr circuit being clogged
     
    #2 tankyuong, Aug 26, 2019
    Grit likes this.
  3. TwoPriusInTenn

    TwoPriusInTenn Member

    Joined:
    Nov 27, 2015
    195
    59
    0
    Location:
    Tennessee
    Vehicle:
    2004 Prius
    Model:
    Base
    Will knocking due to clogged egr disappear with increased rpms/engine speed?

    Knocking on our Prius is happening when the engine kicks in and goes away when the gas pedal is pressed.
     
    #3 TwoPriusInTenn, Aug 26, 2019
    Grit likes this.
  4. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    7,035
    2,782
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    After a few revolutions and TERRIBLE NOISES, it usually gets very quiet. :eek:

    What makes you think about the flywheel in the first place ??
     
    #4 sam spade 2, Aug 26, 2019
    Grit likes this.
  5. TwoPriusInTenn

    TwoPriusInTenn Member

    Joined:
    Nov 27, 2015
    195
    59
    0
    Location:
    Tennessee
    Vehicle:
    2004 Prius
    Model:
    Base

    The noise happens when the car is idling. It also appears to be on the drivers side.
     
    #5 TwoPriusInTenn, Aug 26, 2019
  6. TwoPriusInTenn

    TwoPriusInTenn Member

    Joined:
    Nov 27, 2015
    195
    59
    0
    Location:
    Tennessee
    Vehicle:
    2004 Prius
    Model:
    Base
    I have replaced the plugs, coils and injectors. I also cleaned the intake manifold and egr pipe. The egr cooler is so clean, I can see daylight through it! I did clean the egr, but it could be malfunctioning. I have an egr valve on order. It will arrive in a couple days.
     
    #6 TwoPriusInTenn, Aug 26, 2019
  7. TwoPriusInTenn

    TwoPriusInTenn Member

    Joined:
    Nov 27, 2015
    195
    59
    0
    Location:
    Tennessee
    Vehicle:
    2004 Prius
    Model:
    Base
    One other symptom I was reminded off. Slight smell like rotten eggs = exhaust and catalytic converter.
     
    #7 TwoPriusInTenn, Aug 26, 2019
  8. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
    1,555
    660
    0
    Location:
    Central MO
    Vehicle:
    2012 Prius c
    Model:
    II
    My Prius was using coolant and had the same knocking until the crankshaft blew a hole on the side of the engine
     
    #8 tankyuong, Aug 26, 2019
  9. TwoPriusInTenn

    TwoPriusInTenn Member

    Joined:
    Nov 27, 2015
    195
    59
    0
    Location:
    Tennessee
    Vehicle:
    2004 Prius
    Model:
    Base
    Did it display any codes or other signs, other than knocking, before blowing apart?
     
    #9 TwoPriusInTenn, Aug 26, 2019
  10. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
    1,555
    660
    0
    Location:
    Central MO
    Vehicle:
    2012 Prius c
    Model:
    II
    Po300
     
    #10 tankyuong, Aug 28, 2019
  11. 4est

    4est Active Member

    Joined:
    Mar 4, 2017
    207
    121
    0
    Location:
    Romania
    Vehicle:
    2013 Prius Plug-in
    Model:
    Excel
    Sounds like a head gasket to me... Unfortunately...
     
    #11 4est, Aug 28, 2019
  12. TwoPriusInTenn

    TwoPriusInTenn Member

    Joined:
    Nov 27, 2015
    195
    59
    0
    Location:
    Tennessee
    Vehicle:
    2004 Prius
    Model:
    Base
    Cause of the problem was a faulty new ignition coil. Replaced with another. Runs smooth.

    Another code flashed up P261B - water pump bad......what are the odds???
     
    #12 TwoPriusInTenn, Aug 29, 2019
    mjoo and Mendel Leisk like this.
  13. mjoo

    mjoo Senior Member

    Joined:
    Nov 9, 2016
    1,107
    1,311
    12
    Location:
    Michigan
    Vehicle:
    2010 Prius
    Model:
    III
    Want to update your original thread?

    Pixel XL ?
     
    #13 mjoo, Sep 7, 2019
  14. TwoPriusInTenn

    TwoPriusInTenn Member

    Joined:
    Nov 27, 2015
    195
    59
    0
    Location:
    Tennessee
    Vehicle:
    2004 Prius
    Model:
    Base
    Turns out the water pump was seized. Crazy, the timing of that!
     
    #14 TwoPriusInTenn, Sep 8, 2019
(You must log in or sign up to post here.)