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Egr valve egr cooler egr circuit engine miss

Discussion in 'Gen 3 Prius Technical Discussion' started by c-ville prius, Jul 1, 2019.

  1. c-ville prius

    c-ville prius Junior Member

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    I hope I post this in the correct place
    I have a 2010 Prius with 160,000 miles
    My Daughters have a2011 with 259, 000 miles
    Both were bought new their Prius at about 190,000 started quivering on light acceleration and the fuel mileage dropped, no check engine light ever came on that’s been about a year ago. I found the egr cooler was completely clogged up along with the egr valve and intake intake egr circuits clogged .
    I cleaned all of this and it’s ran fine for 60,000 miles or so. It’s driven about 2 hours a day on open road now it’s started the same symptoms what’s the possibility of the egr valve just worn out after this many miles and not being clogged after only 60,000miles can the egr be checked?
     

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    #1 c-ville prius, Jul 1, 2019
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  2. Raytheeagle

    Raytheeagle Senior Member

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    I put our 2010 on the egr circuit cleanse program every 50k miles;).

    The second cleanse was as clogged as the first one, so I thought 50k miles is appropriate :).

    I’d say pop open the circuit again and see what you find(y).
     
    #2 Raytheeagle, Jul 1, 2019
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  3. Mendel Leisk

    Mendel Leisk Senior Member

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    Yeah check the pipe first, the easiest to access.

    An oil catch can might slow down the rate of clogging.
     
    #3 Mendel Leisk, Jul 2, 2019
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  4. CR94

    CR94 Senior Member

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    How's that 259k Prius doing as far as oil or coolant consumption?
     
    #4 CR94, Jul 2, 2019
  5. Abu Rais

    Abu Rais Member

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    I cleaned mine @200k. Also installed occ at the same time. Now my car has 343466 miles and all of a sudden today morning check engine light came on also gas mileage dropped significantly in last few months.

    You’re cleaning solution looks really good. What did you use to clean all that parts?

    Hopefully I will do mine soon.

    Good luck to you.
     
    #5 Abu Rais, Jul 2, 2019
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  6. Eonflux

    Eonflux Junior Member

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    Whats occ?
     
    #6 Eonflux, Jul 12, 2019
  7. ASRDogman

    ASRDogman Senior Member

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    Oil Catch Can
    It catches and traps oil from the pcv valve so it doesn't get sucked back into the intake manifold.
     
    #7 ASRDogman, Jul 12, 2019
  8. Abu Rais

    Abu Rais Member

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    66B5213B-EAD9-4CAD-8F1C-1A3E226B8E68.jpeg 7D181868-3A43-494A-9870-E0280E3FFCBD.jpeg CF461CF3-75DE-4593-A0EA-01D5FEE9C459.jpeg C7BA0B19-B00A-4EF6-8760-FACC3AF3F3E2.jpeg F9666274-CAAA-4A10-9386-B9EE0ADAB392.jpeg I just opened it today. It looks really bad. Will start cleaning on the weekend and hopefully that will take care of the problems
     
    #8 Abu Rais, Jul 12, 2019
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  9. Raytheeagle

    Raytheeagle Senior Member

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    #9 Raytheeagle, Jul 12, 2019
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  10. spiralhelix

    spiralhelix Active Member

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    Wow that is pretty bad! As AGRDogman suggests in other threads, it might be wise to invest in a second set of parts (used eBay) so you can swap in clean parts, then clean the nasty ones at your leisure. But definitely add the catch can.


    -Spiral
     
    #10 spiralhelix, Jul 15, 2019
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