First Gen 1 Prius Plug-In w/ Blown Head Gasket?

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by Tracksyde, Mar 23, 2017.

  1. Raytheeagle

    Raytheeagle Senior Member

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    Does that mean we'll have pics soon:)?

    Maybe while you take some pics, you'll inadvertently take one and create an avatar :p.
     
  2. bisco

    bisco cookie crumbler

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    if i knew how to take a pic, i would do it.:p
     
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  3. Mendel Leisk

    Mendel Leisk Sand Pounder

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    You can remove the pipe, fairly easy, then EGR valve, a little tricky? (haven't done that) , then shine a light into the cooler outlet, to get some idea of condition?
     
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  4. bisco

    bisco cookie crumbler

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    that's not gonna cut it! i need pics! videos! detailed, line by line instructions!:p and even then, i would have to roll the dice...
     
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  5. Raytheeagle

    Raytheeagle Senior Member

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    Up for a 4 hour drive on Saturday the 29 th?

    I just might know someone who will be doing similar maintenance:whistle:.

    No instructions required(y).
     
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  6. bisco

    bisco cookie crumbler

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    that's beyond my ev range.:oops:
     
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  7. Raytheeagle

    Raytheeagle Senior Member

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    Perfect opportunity to give the rarely used ICE a chance to get a work out(y).
     
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  8. m.wynn

    m.wynn Senior Member

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    Complimentary pink coolant on ice for all comers!
     
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  9. m.wynn

    m.wynn Senior Member

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    I see what your getting at here; blown EGR cooler, coolant back flow into cylinder 4 via open exhaust valve while engine off. Tracksydes chronology of the Techs scrambling with symptoms after replacing head gasket and finally diagnosing spark plug. I thought the same thoughts when reading thru... Awesome to hear this play-by-play of dealer repair, though.

    I'm gonna disagree here and say I think the intake manifold is the most clog prone part of the circuit. In part because when my 2010 had the missing under light throttle issue, cleaning just the IM remedied it completely for the last 40k miles. At 140k, my cooler has never been cleaned. My thinking is that the cooler sees high temp gasses straight from the exhaust manifold, less likely to condense while passing thru the radiator passages. By the time they been cooled by the cooler, passed thru the valve, the pipe and into the IM circuitry, they've cooled to where condensation is more easily achieved. Agree with both yourself and Ray that oil burning could be exacerbating the already wonky EGR circuit.

    In the end, I'm not sure if it matters which part of the circuit is most clog prone. I would think once there is complete or near complete blockage, heat related engine damage is just a function of time away. People with the EGR symptoms (or even without symptoms!) need to clean the entire cicuit. This "I cleaned the EGR pipe" thing going on around here isn't a fix.

    Still, all just a knucklehead thinking out loud...
     
    #69 m.wynn, Apr 4, 2017
    Last edited: Apr 4, 2017
  10. Munpot42

    Munpot42 Senior Member

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    You must have never owned a Subaru!
     
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  11. Tracksyde

    Tracksyde Member

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    I looked at the first invoice from 2/22/2017 (for the EGR) and there were two part numbers on the invoice:

    04004-58137 EGR Valve Kit
    25685-37010 Gasket, EGR Cooler

    The gasket is the one that goes between EGR valve and the EGR cooler, so as you said, no EGR cooler replacement.

    The kit part number, I cant find on Toyota's part website (Toyota Parts and Service Hub). But I do see the EGR valve has a part number of 25620-37110. Googling that part, I see its priced at around $222 (on some random Toyota dealer parts website). The kit part number only costs $158 at the same site.

    However, I also noticed that the EGR part number (for my VIN) only shows a date range of 01/2012 to 06/2012. I used a VIN I found online for a 2014 PiP and the EGR part number is 25620-37120. It has the same cost, $222, but the date range is 06/2012 to 06/2015.

    The EGR pipe only costs $49. I'm not sure what else would be included in the kit part number that would make the cost $158 or so. On the labor portion of the invoice, it simply says "replaced EGR valve and pipe" and "N/C" for cost.

    Its weird I cant find that EGR Valve Kit part number or any information about whats included it in. I see it for sale when I google it, but no descriptions.
     
    #71 Tracksyde, Apr 5, 2017
    Last edited: Apr 5, 2017
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  12. Raytheeagle

    Raytheeagle Senior Member

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    My guess is the kit includes 2 additional gaskets if they replaced the pipe. One between the egr and pipe and one for the pipe to intake manifold.
     
  13. Tracksyde

    Tracksyde Member

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    But even adding those in, I just cant see what makes up the rest of that kit cost:

    The two pipe gaskets are:

    25634-37010 Gasket, EGR pipe (on the EGR side) - $2.53
    25628-28010 Gasket, EGR inlet (on the intake manifold side) - $1.92

    If we include the hardware:

    Four bolts, $0.60 each - $2.40
    One nut - $0.77
    One stud - $1.16
     
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  14. Mendel Leisk

    Mendel Leisk Sand Pounder

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    A link to 2010 Prius Toyota Parts Online page with EGR components:

    EGR SYSTEM for 2010 Toyota Prius | Toyota Parts

    I entered 2012 PIP and the EGR system was absent, so defaulted back to 2010. It's interesting the simple connecting pipe (item 5) is referred to as "tube", and the cooler is referred to as "pipe". Not the most descriptive/discriminating titles. I can't see there ever being a need to replace the tube (item 5), it's a pure-and-simple plumbing piece.

    Pic for easier reference:

    upload_2017-4-5_10-24-54.png
     
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  15. Neohippy

    Neohippy Active Member

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    I notice when my car is fully charged you lose 1.5 miles of EV range as soon as you turn the a/c on. I just figured it out the other day. The display changes as soon as you hit the a/c.
     
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  16. jerrymildred

    jerrymildred Senior Member

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    It sure does! A/C or fan, the range change is the same. It's actually a percentage because, if you only have 5 miles of range left before you turn on the fan or A/C it drops by about a half mile or so. I have some experiments in mind to try to regain range in hot weather. Some free, some not so free, but still cheap since I'm cheap.
     
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  17. Raytheeagle

    Raytheeagle Senior Member

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    Toyota parts or OEM in terms of pricing is difficult to understand .

    A recent example:

    I went to 2 local dealers to price a front wheel bearing hub assembly for our 2010 Prius II. The quote came back at $339 at each dealer. If I go to rock auto, a moog or timken bearing is $150 or thereabouts.

    For the egr valve, I paid $35 and for the cooler $65 at the local salvage yard.

    Prices charged by Toyota do not reflect the actual costs.
     
    #77 Raytheeagle, Apr 5, 2017
    Last edited: Apr 5, 2017
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  18. Tracksyde

    Tracksyde Member

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    Yeah, I give up. My car's running good, thats all that matters I guess. ;)
     
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  19. bisco

    bisco cookie crumbler

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    i guess it's supposed to be a warning that your range will be affected by a/c use. not sure why it comes on with just the fan though, and i think someone said prime is the same way.
     
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  20. Aaron Vitolins

    Aaron Vitolins Senior Member

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    So as some of you may remember, I replaced my sisters 2010 prius engine with a low milage 2013 plug in prius motor last year. The motor has done over 50k miles in the last year (and a few months). So the engine actuality has about 85k on it. Well that engine is now drinking coolant, and a slight start up rattle has started. I'm pretty upset over this. My sister loves the car, and we've put so much work and time replacing the motor. :( :(
     
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