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2010 Prius Intake EGR ports clogged runs rough from idle up to 65 mph

Discussion in 'Gen 3 Prius Technical Discussion' started by RobRig, May 24, 2021.

  1. RobRig

    RobRig Junior Member

    Joined:
    Oct 13, 2020
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    Location:
    Richmond, VA
    Vehicle:
    2010 Prius
    Model:
    Touring
    My 2010 Prius began to run rough at slow speeds and on deceleration beginning a month or so ago. Roughness got progressively worse to the point of running rough at any speed below 65 mph.
    I removed the intake manifold and cleaned the crud out of the EGR passages and made a 15 minute video.
    I'd like to share a YouTube link with the group for others experiencing similar problems.

     
    #1 RobRig, May 24, 2021
    WolfpackBill, BrianStranded, mikey_t and 2 others like this.
  2. Mdv55

    Mdv55 Active Member

    Joined:
    Dec 25, 2018
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    Location:
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    Vehicle:
    2011 Prius
    Model:
    Three
    Wow. Lot of carbon. Have you done the cooler yet?
     
    #2 Mdv55, May 26, 2021
  3. PriusII&C

    PriusII&C Active Member

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    Vehicle:
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    II
    Good job!:)
     
    #3 PriusII&C, May 26, 2021
  4. ChapmanF

    ChapmanF Senior Member

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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    10mm socket for squeezing the wretched wire harness clips is worth the price of admission. Thanks!
     
    #4 ChapmanF, May 26, 2021
    RobRig, Roger559, mikey_t and 1 other person like this.
  5. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
    Oct 17, 2010
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    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Yeah he says “a couple of months back” he did the cooler, words to that effect. The intake is the last leg of the Exhaust Gas Recirculation circuit; until it’s cleaned the EGR cleaning is pretty much for naught.
     
    #5 Mendel Leisk, May 26, 2021
    RobRig likes this.
  6. Paul E. Highway

    Paul E. Highway Active Member

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    Mar 7, 2020
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    Location:
    Hawaii
    Vehicle:
    2010 Prius
    Model:
    Four
    There have been several revisions to the Gen 3 intake manifold, I replaced mine with the current version when I did EGR cooler on my 2010 at 156K. Will follow your procedure next time, excellent video!
     
    #6 Paul E. Highway, May 26, 2021
    RobRig and mikey_t like this.
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