Techstream EGR Valve Blockage Data

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by jas8908, May 3, 2019.

  1. ChapmanF

    ChapmanF Senior Member

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    Good catch on the units. Those had better be kPa! :)
     
  2. sLick415

    sLick415 Member

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    Here's mine. Cleaned EGR, intake and MAP sensor 2 days ago.

    Wish I'd performed a test prior to cleaning.

    2012, 100k miles

    Screenshot_20210407-193956.png
     
    #62 sLick415, Apr 7, 2021
    Last edited: Apr 7, 2021
  3. AW82

    AW82 Member

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    Well, I did add a turbo to my Prius.
     
  4. AW82

    AW82 Member

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    Out of curiosity, I checked the test results again today (and I still have NOT cleaned the EGR cooler or valve) to see what sort of variation there might be in test results.

    April 7: 16.17 kPa
    April 16: 16.28 kPa

    They're different enough to know the test ran again but still really similar. I'll try to do this a few more times to see if there's more fluctuation. While we can't definitively say what the target/threshold number is for healthy/unhealthy EGR, it would be nice to know if the results are consistent so that a single test is all you need.
     
  5. ChapmanF

    ChapmanF Senior Member

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    Thanks for doing that. Measures of test-to-test variance without changing anything are definitely part of the picture we need.
     
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