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Intake cleaning solved my problem

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by TAPnAR, Nov 24, 2019.

  1. TAPnAR

    TAPnAR Member

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    I bought a 2013 Prius two last weekend, and on the way home I kept getting this shaking in the engine. I am new to Prius, so I thought it may be something where it is switching between EV and ICE. It would go away with acceleration or letting of the gas pedal. I have read several threads about this being an EGR issue. So yesterday I dove in removing the Intake and the Pipe from the EGR valve to the Intake. i cleaned them both thoroughly. I noticed that the small holes that allow the EGR gases to flow into the intake were almost completely clogged. The pipe was not so bad, but cleaned it anyway. I am pleased to say it runs great now, no more shaking when driving. Thank you so much for a great site, and all of the input.


    Very Happy Prius Owner!
     
    #1 TAPnAR, Nov 24, 2019
    TheeWood, Rebound, elementnomore and 3 others like this.
  2. tankyuong

    tankyuong Senior Member

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    Egr cooler recommended also
     
    #2 tankyuong, Nov 24, 2019
  3. Mendel Leisk

    Mendel Leisk Senior Member

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    The simplest way to see where you're at, is to check the degree of carbon build up in the EGR pipe, a stainless steel connecting pipe between the EGR valve and intake manifold. Watch @NutzAboutBolts video #16 here:

    Nutz About Bolts Prius Maintenance Videos | PriusChat

    Two or three other videos linked there too, for the full cleaning of the intake manifold, full EGR clean, and Oil Catch Can install.

    Good thread:

    EGR & Intake Manifold Clean Results | PriusChat

    Another:

    Oil Catch Can, Eliminate that knock! | PriusChat

    Some tools worth having:

    E8 Torx socket (mandatory)
    E6 Torx socket (optional, but good to have, to remove the throttle body studs from intake manifold)
    3/8" ratchet wrench, regular and long handle, flex head, you can never have enough (or 1/2 plus reducer)
    1/4" ratchet wrench, or 3/8" to 1/4" reducer
    Ratchet extensions: you can never have enough
    Long needle nose piers, straight and bent tip
    Ratcheting 12mm box wrench (optional, but makes disconnection of the EGR cooler from exhaust easier)
    Torque wrench (3/8" and 1/4" both good to have)
    Floor jack and safety stands (or ramps): basically some method to raise front, if you need to take underpanel off, which you may need to, both for access and to recover dropped items.
     
    #3 Mendel Leisk, Nov 24, 2019
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  4. bisco

    bisco cookie crumbler

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    congrats and welcome!(y)
     
    #4 bisco, Nov 24, 2019
  5. TAPnAR

    TAPnAR Member

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    Vehicle:
    2013 Prius
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    Five

    Will do that the next round of maintenance. The Pipe from the EGR to intake was not too bad. But I will for sure get it all cleaned up.

    Thank you for the reply


    Thank you :)


    Thank you for the great info, I will gather those supplies before tackling the EGR cleaning.
     
    #5 TAPnAR, Nov 24, 2019
    Last edited by a moderator: Nov 24, 2019
    RMB, Raytheeagle and Mendel Leisk like this.
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