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Prius 3rd gen common issues before buying

Discussion in 'Gen 3 Prius Main Forum' started by Haschwalt, Jul 31, 2019.

  1. Grit

    Grit Senior Member

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    I’m one of those out of the box maintenance people so with that being said...

    Change redline oil every 12K to 14K miles with Mobil 1 20K filters. Read about that oil and what’s really in it, it doesn’t even have dexos2 approval :eek:
     
    #121 Grit, Aug 9, 2019
    Last edited: Aug 9, 2019
  2. Grit

    Grit Senior Member

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    Majority of the people who comes in here to post about burning oil who have yet experienced head gasket crapping out uses oem oil and filters. That’s enough data for me to conclude that quality of both aren’t up to my standards. At meetups, we do oil changes, I see their filter pleats warped and Ive seen others theirs posted on here also. The oem oil and Mobil 1 oil gets coffee dark & thick at 4,500 miles, same goes for royal purple oil at 4,500 miles. Redline goes dark thick at 13,000 miles for me, but it does have 1,200 ppm of zinc rather than average store bought oil that conforms to dexosgen2 600-900ppm of zinc so it provides additional protection after most other oils turns dark dirty.
     
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  3. Grit

    Grit Senior Member

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    Btw how many miles your’s accumulated?
     
  4. Haschwalt

    Haschwalt Member

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    Do you have the part number, or link to each brand/type? I might just go with your method then if you think the oil doesn't go as bad. Would this also reduce the head gasket & EGR assembly failure, or other common failures with this generation?
     
  5. Mendel Leisk

    Mendel Leisk Senior Member

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    83K kms, which is slightly more than zero miles? :oops:
     
    #125 Mendel Leisk, Aug 9, 2019
    Last edited: Aug 9, 2019
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  6. Grit

    Grit Senior Member

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    So that’s why you haven’t burned any oil yet with OEM filter and oil!!! :p
     
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  7. mattbatson

    mattbatson Member

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    As I said in the post you quoted
    I had the brake accumulator go on my 2009
    At a cost of 4500 dollars to repair
    I’ve also had the dash display blank out and replace it with a rebuilt one from a company I found on here
    Also the inverter circulator pump went

    Both the dash/speedo display and circulator pump were easy fixes and cheap

    Which is my whole point

    Look at what is KNOWN to fail on whatever car you are considering

    If big ticket items like head gaskets or air conditioning or whatever are known to fail ... then pass those models up

    Get a car that has circulator pumps or dash displays as known issues (just an example)

    In the long run you will thank me
     
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  8. Haschwalt

    Haschwalt Member

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    I saw a video for the EGR pipe cleaning, and intake manifold cleaning. I didn't find the full EGR cleaning video. Do you mind sending me a link to that? The EGR pipe cleaning looks pretty easy to do, but the intake manifold cleaning looks slightly more involved.

    Nvm found it:


    Also, what synthetic CVT fluid is recommended by PriusChat? And this should be changed every 60k miles from 30k miles? Does the Toyota service manual have you change the CVT oil at 30k miles? If not, when does it say to do so? 100k miles? Assuming a used Prius that I buy hasn't had the transmission fluid changed before 100k miles, should I just do it when I purchase the car, and then do it every 60k miles from that point?
     
  9. Mendel Leisk

    Mendel Leisk Senior Member

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    The Toyota Prius Owner's Manual specs Genuine Toyota ATF WS fluid, and warns that any other fluid may cause damage.

    Toyota gives no interval for the fluid change though. Dealerships too tend to argue against it.

    I would recommend to change the fluid on any newly acquired Prius ASAP, unless you know for certain it's been previously changed.

    That out of the way you can go a long ways before a subsequent change, yeah maybe 60~90K miles.
     
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  10. Mendel Leisk

    Mendel Leisk Senior Member

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    Here's a boilerplate text I've done on EGR and intake manifold, references, links to the videos and threads (definitely read through those) and some tips:

    The simplest way to see where you're at, is to check the degree of carbon build up in the EGR pipe, a stainless steel connecting pipe between the EGR valve and intake manifold. Watch @NutzAboutBolts video #16 here:

    Nutz About Bolts Prius Maintenance Videos | PriusChat

    Two or three other videos linked there too, for the full cleaning of the intake manifold, full EGR clean, and Oil Catch Can install.

    Good thread:

    EGR & Intake Manifold Clean Results | PriusChat

    Another:

    Oil Catch Can, Eliminate that knock! | PriusChat

    Some tools worth having:

    E8 Torx socket (mandatory)
    E6 Torx socket (optional, but good to have, to remove the throttle body studs from intake manifold)
    3/8" ratchet wrench, regular and long handle, flex head, you can never have enough
    1/4" ratchet wrench, or 3/8" to 1/4" reducer
    Ratchet extensions: you can never have enough
    Long needle nose piers, straight and bent tip
    Ratcheting 12mm box wrench (optional, but makes disconnection of the EGR cooler from exhaust easier)
    Torque wrench (3/8" and 1/4" both good to have)
    Floor jack and safety stands (or ramps): basically some method to raise front, if you need to take underpanel off, which you may need to, both for access and to recover dropped items.
     
    #130 Mendel Leisk, Aug 13, 2019
    Last edited: Aug 13, 2019
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  11. rjparker

    rjparker Tu Humilde Sirviente

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    Kind of interesting to look at a three year old gen3 go no go thread.

    @Grit Another humorous quote for your signature

    @Buyers at Consumers Reports purchase new and sell early. Prius problems get serious around 150k miles.

    One good reference from a guy who did not buy a gen3

    Not the actuators as we now know

    EGR is the $800-$1,000 dollar job Toyota does not recommend

    The dangers of being a spec reader

    The worst reason to buy a gen3 and blowoff all the real concerns


    True wisdom
     
  12. MrPete

    MrPete Active Member

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    Mendel, that's a GREAT photo... I'm doing my first jack lift/stands... Dumb Question: where in that photo is the front jack lift point? I don't see any obvious place to lift??!


     
  13. rjparker

    rjparker Tu Humilde Sirviente

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    If you have a floor jack there is a center point that lifts the front end, then jack stands on the side rails where your car scissor jack goes. See pics
     

    Attached Files:

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  14. Mendel Leisk

    Mendel Leisk Senior Member

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    Front jack point is unfortunately just out of frame; @rjparker shows. It’s hard to miss, in middle of round opening in engine compartment underpanel.
     
  15. MrPete

    MrPete Active Member

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    Got it! Yep, perfect for my floor jack.

    I like Mendel's jack stand locations better than the sides... now to bring back my too-tall stands just purchased, and swap for low profile that can fit w/o having to raise the car a crazy amount every time.... ;)
     
  16. rjparker

    rjparker Tu Humilde Sirviente

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    You have to be careful with jackstands these days; too many cheap ones which have been known to slip when placed in the wrong places and bend when they should not. I much prefer the bigger heavy duty stands even if it requires jacking the car up more.
     
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  17. Mendel Leisk

    Mendel Leisk Senior Member

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    3 and 6 tons jackstands are good for most purposes. Starting with 3 ton probably best.
     
  18. Air_Boss

    Air_Boss Senior Member

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    ESCO 3-Ton tripod jacks for the win -- both rubber cushioned/flat and axle saddle tops.