NEW!!! Service Bulletin for Engine Knocking at Startup T-SB 0012-10

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by seilerts, Jan 12, 2012.

  1. Raytheeagle

    Raytheeagle Senior Member

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    P0401 confirmed?
     
  2. Abdi85

    Abdi85 New Member

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    I had same problem but what you need to do .buy fuel clean then the car will start as normal or if you want you can clean the injector
     
  3. Abdi85

    Abdi85 New Member

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    Hi gen 3 I’m losing engine coolant there is no leak I jus keep topping up every day any body knows
     
  4. Mendel Leisk

    Mendel Leisk Senior Member

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    With an impact screwdriver, it was Mendel zero, screws one, last time for me. Still, I think I managed to clean it fairly competely, just working from both sides.
     
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  5. Raytheeagle

    Raytheeagle Senior Member

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    Always unfortunate to lose to a mechanical device:cool:.

    The only thing you missed was it’s testong position and possibly packed the seat a bit more if you couldn’t wipe the area down;).

    But your garage queen doesn’t pack the miles on, so it’ll be ok(y).
     
  6. Mendel Leisk

    Mendel Leisk Senior Member

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    I carefully lifted the valve with a screw driver blade, cleaned where it seated. Agree though, it'd rather have got those screws loose, opened it up.
     
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  7. Raytheeagle

    Raytheeagle Senior Member

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    Was it a force thing? I’m not gentle when it comes to the impact screwdrivers use;).

    Although the inverter water pump with an impact screwdriver did lead to drilling one out that was troublesome:cool:.

    But at least it was the spent one(y).
     
  8. JC91006

    JC91006 Senior Member

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    Ok got a call back from Toyota after 3 days, they can't duplicate my problem and want me to pick up my car.

    These warranty enhancements are worthless. I even gave them a video.

    Anyways, I'm going to push the issue with the service manager
     
  9. Raytheeagle

    Raytheeagle Senior Member

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    Good luck but not surprising :cool:.

    They don’t do anything without proof though that they an see:(.

    I had the local toyota up here not cop to cracking the valve cover on the 98 4runner and made me point out their mistake:mad:.

    Always worth a shot though(y).
     
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  10. Mendel Leisk

    Mendel Leisk Senior Member

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    Yeah maybe. Later on I had no problem busting loose Honda rotor "retainer screws", with the same impact driver. But by then I'd acquired a small sledge hammer, a nice one-hander size. I'll persevere if there's ever another foray into EGR.

    Maybe get replacement screws in advance too. Then you're a little less nervous about wailing on them. I had replacement screws for the Honda rotors, and of course never needed them.
     
    #1070 Mendel Leisk, Apr 13, 2019
    Last edited: Apr 13, 2019
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  11. ldenne

    ldenne Junior Member

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    so If I'm reading this correctly - the knocking on cold start with my check engine light -(I'm sorry not super car savvy) could be a start into getting this fixed - our could my spark plugs just need to be replaced?? course I just had the recall work done at my local Toyota dealer and they said nothing about my check engine light or the knocking on startup.
     
  12. JC91006

    JC91006 Senior Member

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    Finally getting my car back from the dealer today, they had it for 15 days.

    They never were able to duplicate the knocking noise on my engine. The service manager agreed to change the EGR valve without the code p0401 because the wording on the technical bulletin states code "MAY" appear. Before replacing the valve, they had to make sure I didn't have a blown head gasket before they did the repair (shop foreman insisted I may already have a blown gasket). They pulled my spark plugs and stuck some type of scope down to look at the cylinders, a check for coolant.

    Ultimately the decision to replace it was my talk with the service manager and showing him my video again. The service writer had all the information but he didn't have the authority to make the repair without the code p0401. The service manager was the only person that was able to make it happen.
     
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  13. wheezyglider

    wheezyglider Active Member

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    Is your EGR valve actually sticking? I read so many different threads -- sorry if I missed where that was confirmed. There are other causes of startup knock. Even without a blown head gasket.
     
  14. JC91006

    JC91006 Senior Member

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    I don't really know if my EGR valve is sticking, I just know there's a warranty enhancement that addresses the knocking by replacing the EGR valve. I'm willing to try anything they provide for free
     
  15. JC91006

    JC91006 Senior Member

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    The service paperwork states replacement of

    04004-58137 egr valve kit
    25685-37010 gasket, egr cooler
    Modify wiring harness + reprogram ecu
     
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  16. JC91006

    JC91006 Senior Member

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    All looks new under there 20190425_155856.jpg
     
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  17. wheezyglider

    wheezyglider Active Member

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    Reprogram ecu? o_O Wonder what that's about.
    I hope it clears that stutter finally.
     
  18. ASRDogman

    ASRDogman Senior Member

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    Are you going to take it apart and clean the cooler and intake manifold? :)
     
  19. JC91006

    JC91006 Senior Member

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    Been there, done that
     
  20. JC91006

    JC91006 Senior Member

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    I didn't know modified harness and reprogram ecu was part of the repair. But if it helps the car, I'm all for it
     
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