2010 Prius knocking and rattling

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Cody Sorrell, Sep 9, 2019.

  1. Cody Sorrell

    Cody Sorrell New Member

    Joined:
    Sep 9, 2019
    6
    4
    0
    Location:
    Iowa
    Vehicle:
    2010 Prius
    Model:
    Three
    Hey guys, this is my first time posting here so I’m sorry I’m advance for any issues this may cause. I’m going absolutely crazy trying to find out what’s wrong with my 2010 Prius. Not long after I purchased it, the car started to shake and rattle while going between 45-60 mph typically. This has no escalated to what almost sound a like a knocking coming from the engine bay. So far I’ve replaced or worked on:
    •All the spark plugs replaced
    •All ignition coils replaced
    •EGR pipe cleaned
    •transmission leak fixed and transmission fluid changed (at a Toyota dealer)

    She currently has 155,649 miles. I bought it with 140,000. I really love this car as my work car since I drive nearly an hour to and from work each day. Any help would be appreciated
     
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    83,664
    36,577
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    welcome!

    probably a blown head gasket.

    burning any oil? any antifreeze in the oil?
     
    m.wynn likes this.
  3. Cody Sorrell

    Cody Sorrell New Member

    Joined:
    Sep 9, 2019
    6
    4
    0
    Location:
    Iowa
    Vehicle:
    2010 Prius
    Model:
    Three
    Not burning any oil and no antifreeze in the oil. I’m going crazy trying to figure this out. It’s been like this for 6 months now
     
  4. Cody Sorrell

    Cody Sorrell New Member

    Joined:
    Sep 9, 2019
    6
    4
    0
    Location:
    Iowa
    Vehicle:
    2010 Prius
    Model:
    Three
    Here’s a video of it

     
  5. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
    1,069
    434
    0
    Location:
    Central MO
    Vehicle:
    2010 Prius
    Model:
    III
    Gotta clean the entire egr circuit not just the pipe, if that doesn’t clear it then blown head gasket
     
  6. Cody Sorrell

    Cody Sorrell New Member

    Joined:
    Sep 9, 2019
    6
    4
    0
    Location:
    Iowa
    Vehicle:
    2010 Prius
    Model:
    Three
    I’ll take a look at the oil when I change it tonight to see if there’s coolant in it. I just checked the reservoir and the level is good.
     
  7. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    83,664
    36,577
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    have you done a compression/leak down test?
     
  8. Cody Sorrell

    Cody Sorrell New Member

    Joined:
    Sep 9, 2019
    6
    4
    0
    Location:
    Iowa
    Vehicle:
    2010 Prius
    Model:
    Three
    Yes, the dealer did one when I took it in to get checked initially.
     
  9. Cody Sorrell

    Cody Sorrell New Member

    Joined:
    Sep 9, 2019
    6
    4
    0
    Location:
    Iowa
    Vehicle:
    2010 Prius
    Model:
    Three
    Finally found the fix. Cleaned the intake manifold out including the EGR passages. Also changed the PCV valve and cleaned the throttle body. Drove it 25+ miles after with no shaking or rattling whatsoever. Thanks for al your help!
     
  10. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    83,664
    36,577
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    well done, congrats!(y)
     
Loading...