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Unnecessary (& rough) running ICE

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by Fubar XIII, Jul 10, 2024.

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  1. sparky12

    sparky12 Junior Member

    Joined:
    May 15, 2012
    21
    8
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    Location:
    Virginia
    Vehicle:
    2021 Prius
    Model:
    XLE AWD-e
    Sounds like an EGR valve to me... I'd change the valve and the cooler thingy on the the other side of it. You can clean it but it takes less time to replace it. Also remove the intake manifold and try to clean the small ports as well. They can clog up and cause rough running. Check the tube between the valve and the intake manifold too. The Car Care Nut discussed that on one of his vids..
     
    #21 sparky12, Sep 28, 2024
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