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

New Video: Toyota EGR Diagnosis Tips and Repair Tips

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Georgina Rudkus, Jul 8, 2021.

  1. Georgina Rudkus

    Georgina Rudkus Senior Member

    Joined:
    Sep 15, 2018
    3,096
    2,163
    0
    Location:
    Taylors, SC
    Vehicle:
    2012 Prius v wagon
    Model:
    Two

     
    Merkey and Grit like this.
  2. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
    1,555
    659
    0
    Location:
    Central MO
    Vehicle:
    2012 Prius c
    Model:
    II
    Nutzandbolts video is more deep in detail
     
  3. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    23,073
    14,982
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    At the same time, interesting to see a Toyota dealership mechanic's take on it.
     
    Merkey likes this.
  4. Georgina Rudkus

    Georgina Rudkus Senior Member

    Joined:
    Sep 15, 2018
    3,096
    2,163
    0
    Location:
    Taylors, SC
    Vehicle:
    2012 Prius v wagon
    Model:
    Two
    When I'm ready to do this, like the dealer mechanic, I will bite the bullet and spend the $200 plus dollars for the new upgraded intake manifold,

    At nearly 10 years old and just half a thousand to 26k miles, I might not even get there to service the egr in another 10.
     
    Merkey likes this.
  5. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,476
    38,106
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    The upgrade on the IM is EGR passages go to 1>2>4, vs 1<4, AFAIK. Simply cleaning the old one is quite easy too. I’d be more inclined to change the valve and cooler, especially if it’s high miles and REALLY socked in with carbon.
     
    DanWF likes this.
  6. Georgina Rudkus

    Georgina Rudkus Senior Member

    Joined:
    Sep 15, 2018
    3,096
    2,163
    0
    Location:
    Taylors, SC
    Vehicle:
    2012 Prius v wagon
    Model:
    Two
    I have a fully cleaned egr and cooler. At just a little over $200, a new intake manifold is chump change compared to the price of a new car.
     
    Rebound and Grit like this.
  7. rjparker

    rjparker Tu Humilde Sirviente

    Joined:
    Jun 6, 2008
    7,478
    4,375
    7
    Location:
    Texas Hill Country
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Its interesting the Toyota mechanic does not see the relationship between a hg problem and a sticking open egr other than one being mistaken for the other. He seems to believe the biggest egr issue is the valve sticking and not the cooler buildup. He replaces rather than cleans the egr valve, intake manifold and emphasizes loading the egr software update.
     
    Mendel Leisk likes this.
  8. Paul E. Highway

    Paul E. Highway Active Member

    Joined:
    Mar 7, 2020
    198
    126
    0
    Location:
    Hawaii
    Vehicle:
    2010 Prius
    Model:
    Four
    I installed updated intake manifold, new EGR cooler, new EGR valve, new EGR pipe, new water pump and oil catch can in March 2020 at 155K. COVID 19 cut back my driving a lot, have only driven about 10K since then. I wanted to have a baseline on all the EGR issues. Car runs super smooth on Costco gas and Techron fuel injector cleaner every 3 months. Hopefully dodged the EGR bullet, plan to check the EGR stuff at 50K mark.
     
    Georgina Rudkus and Mendel Leisk like this.
  9. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,476
    38,106
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    “This is the exhaust; it’s never going to be clean”, “as soon as the customer drives it, it’s right back as it was”, and “the intake’s very difficult to clean”. I’m maybe paraphrasing a little, but anyway:

    no, no, and no.
     
    Rebound likes this.
  10. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    23,073
    14,982
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    I can imagine the 'tournament' intake design being tougher to clean out than the old straight one.
     
  11. wheezyglider

    wheezyglider Active Member

    Joined:
    Mar 12, 2011
    247
    177
    0
    Location:
    SF Bay Area
    Vehicle:
    2010 Prius
    Model:
    Five
    FWIW you can verify that the intake manifold's EGR ports are equal-ish by putting a water hose where the EGR pipe would feed in. Use a spirit level to keep the manifold flat and you should see equal flow out each of the four ports, which is easy to judge by how far each stream falls. Doing that before cleaning is also revealing.

    Yeah it's not a lab-grade experiment, but it can put your mind at ease over whether the internals are cleaned fairly.
     
  12. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    23,073
    14,982
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    I'm a big fan of not-quite-lab-grade experiments.
     
    Rebound likes this.
  13. wheezyglider

    wheezyglider Active Member

    Joined:
    Mar 12, 2011
    247
    177
    0
    Location:
    SF Bay Area
    Vehicle:
    2010 Prius
    Model:
    Five
    You should have been there when I took a hacksaw to my first-iteration 2010 intake manifold.

    For the record that plastic is tough as hell. (Personally I would no longer hesitate to clean the EGR passages with a brass bore brush if nylon didn't do the trick.) I never did get to see the innards before my 1-year-on-the-shelf rule kicked in and I binned it. Kinda regret that I never tested it with a torch.
     
    Mendel Leisk likes this.
  14. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,476
    38,106
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    One fat and one skinny bottle brush, a few rags and some brake cleaner: it’s clean.
     
    wheezyglider likes this.
  15. Georgina Rudkus

    Georgina Rudkus Senior Member

    Joined:
    Sep 15, 2018
    3,096
    2,163
    0
    Location:
    Taylors, SC
    Vehicle:
    2012 Prius v wagon
    Model:
    Two
    Cleaning the intake is fine, if one has more time than money. If you have both to spare, I'd go with the upgraded one.

    Toyota spent millions of dollars designing and making the new upgraded manifold. They don't take this expenditure lightly. I will still buy and install the new one.
     
    #15 Georgina Rudkus, Jul 9, 2021
    Last edited: Jul 9, 2021
    Rebound and nedear88 like this.
  16. Georgina Rudkus

    Georgina Rudkus Senior Member

    Joined:
    Sep 15, 2018
    3,096
    2,163
    0
    Location:
    Taylors, SC
    Vehicle:
    2012 Prius v wagon
    Model:
    Two
    It is made of 35% glass filled nylon.
     
    wheezyglider likes this.
  17. ASRDogman

    ASRDogman Senior Member

    Joined:
    May 29, 2018
    5,837
    3,137
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    Two
    Why did you replace the egr pipe? They are easy to clean and don't wear out.

     
  18. Paul E. Highway

    Paul E. Highway Active Member

    Joined:
    Mar 7, 2020
    198
    126
    0
    Location:
    Hawaii
    Vehicle:
    2010 Prius
    Model:
    Four
    there was some stubborn crusty stuff in the pipe so I added one to an Amayama order I was preparing, I think it was $27 and the shipping charge stayed the same. So entire EGR system new and pristine.
     
    ASRDogman likes this.
  19. ASRDogman

    ASRDogman Senior Member

    Joined:
    May 29, 2018
    5,837
    3,137
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    Two
    So you saved the cooler and pipe to clean for next time?
     
    Georgina Rudkus likes this.
  20. Georgina Rudkus

    Georgina Rudkus Senior Member

    Joined:
    Sep 15, 2018
    3,096
    2,163
    0
    Location:
    Taylors, SC
    Vehicle:
    2012 Prius v wagon
    Model:
    Two
    Bought mine complete with the egr, the tube and the cooler as an assembly off of eBay, when it was apparent that there may be issues. They were cheap back then. The whole set was $120 delivered. All have been cleaned to "as-new" condition.
     
    ASRDogman likes this.