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Turbo issue

Discussion in '3rd Gen Tundras (2022+)' started by Lowcountry4x4, Jan 9, 2022.

  1. Jan 16, 2022 at 3:30 AM
    #151
    Pappy40

    Pappy40 New Member

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    My understanding is this engine has no exhaust manifold, turbo bolts right up to the head.
     
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  2. Jan 16, 2022 at 7:37 AM
    #152
    Coal Dragger

    Coal Dragger New Member

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    I wanted a faster vehicle so I also bought a Chevy SS... because 4 door sedans with big V8’s are hilarious.
  3. Jan 16, 2022 at 7:59 AM
    #153
    DrZoidberg

    DrZoidberg New Member

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    [​IMG]

     
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  4. Jan 16, 2022 at 8:40 AM
    #154
    winchester44

    winchester44 New Member

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    Curious why are you “sure”?
     
  5. Jan 16, 2022 at 9:39 AM
    #155
    OnThaLake

    OnThaLake New Member

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    May I interject? I agree with him, at least if we're referencing the wastegate issue.....

    I work in an industry that uses servo feedback actuators, like used on the Tundra.

    If it is glitching "out of the box" that does not bode well for the long-term reliability of that part.

    Actuators like the wastegate actuator on the Tundra are complex, precision devices. Actuators like these have some method of feedback for the ECU to confirm proper operation. It could be an optical wheel, or the ECU can read the current feedback from the drive output to confirm that the actuator moved appropriately.
    For example, maybe the ECU wants the wastegate to move 1,000 steps toward "open" so it will command the actuator drive circuit to move 1,000 steps, whilst simultaneously counting every step. The software prefers to see 1,000=1,000 but there may be some "error" allowed, say 20 steps, before logging a fault.
    If the wastegate actuator is binding up, it will "loose steps" (our term in my industry) and that almost always indicates a mechanical defect. Many things can cause an actuator to fault, depending on the design. If it uses a gear box, does it employ linear or rotational movement?
    Anyways, in my industry, an actuator fault, when new indicates a defective part. Can we get away with reset? Sure. But, the problem should never have happened, and it will come back.
    It seems the actuator on the Tundra has proven, way too early, that it's not reliable. Design? Assembly? Raw materials issue? Hard to say. These are complex devices, and a bit alarming to me that it's "cab-off" to access them. In my industry, we always tried to make sure sensitive stuff like this was easily accessed to reduce down time, because it's a fairly common reason to stop production on our equipment.
     
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  6. Jan 16, 2022 at 9:44 AM
    #156
    IsaiahCanada

    IsaiahCanada New Member

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    2.5 inch lift, TRD front and rear sway bars, 33 inch Open Country AT3 305/55R20 and dual TRD exhaust.
    Does the words indicate and might equate to sure?

    There is no way to be sure, but if this problem manifests itself down the road, it will be an expensive fix and we do know that no turbo lasts forever. So the longevity of the turbos is yet to be seen.
     
    Last edited: Jan 16, 2022
  7. Jan 16, 2022 at 9:55 AM
    #157
    T-Rex266

    T-Rex266 Elon approved Staff Member

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    Carry on…nothing to see here
     
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  8. Jan 16, 2022 at 10:39 AM
    #158
    Alloutdrs1

    Alloutdrs1 New Member

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    This, Turbos these days do last along time and used in many applications. What the issue is i see with this truck is say you get to 200k and you need to replace a turbo or both your looking at a cab off repair which is going to be very costly for a truck with that kind of mileage once it gets there. Other issue i see is crazy amount of hoses and vac lines...turbo v6 motors look so messy. Toyota general has a very organized looking engine compartment, not so much with this truck, could further make it a pain to work on.
     
    JuanTon21, desiwood, =JSG= and 2 others like this.
  9. Jan 16, 2022 at 10:43 AM
    #159
    OnThaLake

    OnThaLake New Member

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    Can you imagine the can of worms that might be opened when doing a cab-off on a truck that's been around salted roads? Not saying whether or not Toyota has a bad reputation with that kind of stuff...
     
    IsaiahCanada likes this.
  10. Jan 16, 2022 at 10:48 AM
    #160
    1SikhTRDPRO

    1SikhTRDPRO New Member

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    Anyone know the manufacturer of the turbos ? Garrett, Honeywell, IHI etc ?
     
  11. Jan 16, 2022 at 11:01 AM
    #161
    Ruggybuggy

    Ruggybuggy Seasoned Veteran

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    I livein the rust belt and cab off was never a real problem for even the only trucks we did frames on. Sometimes the cab bolts at the back would seize but it wasn't ever a big problem.
     
  12. Jan 16, 2022 at 11:13 AM
    #162
    OnThaLake

    OnThaLake New Member

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    Just saying, you take the cab off and realize how bad the rust is.... You may realize the truck has more rust damage than anticipated
    Pretty sure the frame-cab mounting hardware wouldn't be seized up
     
  13. Jan 16, 2022 at 11:23 AM
    #163
    Toyota1234

    Toyota1234 New Member

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    At this point aren’t we assuming the cab actually “needs” to come off? My understanding was a regional Toyota tech wanted the cab off to see the problem better. Not necessarily that you have to remove the cab. Could be wrong.
     
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  14. Jan 16, 2022 at 12:09 PM
    #164
    Jaxyaks

    Jaxyaks New Member

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    I think the actual factory instructions for that repair is to pull the motor....Taking the cab off is quicker
     
  15. Jan 16, 2022 at 12:21 PM
    #165
    Ruggybuggy

    Ruggybuggy Seasoned Veteran

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    The Toyota cabs on the Tacoma's and Tundras hold up very well. The only rust problem was frame related on trucks that people didn't wash the underside. Lifting the cab is not an issue for techs but the shade tree guy without a hoist is going to have an issue.
     
    raylo likes this.
  16. Jan 16, 2022 at 12:37 PM
    #166
    winchester44

    winchester44 New Member

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    Believe it is IHI, some US made, some from China. Reposting this from mechanic posting this on FB.

    271533485_10221743078188366_801370660341_81a7c2fd07ef29da922ac3468ab94de3ef6bbdf2.jpg
     
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  17. Jan 16, 2022 at 12:45 PM
    #167
    1SikhTRDPRO

    1SikhTRDPRO New Member

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    That’s good to hear, IHI is solid, well known in the VW platform.
     
  18. Jan 16, 2022 at 1:03 PM
    #168
    raylo

    raylo not so new member

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    What REALLY is a shame is that Toyota doesn't either make the frames out of better materials or treat them properly before the cab and bed are dropped on when it would be easy peasy to do. That is the weak point on my Tacoma for sure.

     
    OnThaLake[QUOTED] likes this.
  19. Jan 16, 2022 at 1:25 PM
    #169
    Coal Dragger

    Coal Dragger New Member

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    I wanted a faster vehicle so I also bought a Chevy SS... because 4 door sedans with big V8’s are hilarious.
    Supposedly they’re doing more for the new frames to ensure longevity. We will know in a few years.
     
    Tundrastruck91 and OnThaLake like this.
  20. Jan 16, 2022 at 1:25 PM
    #170
    winchester44

    winchester44 New Member

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    Reading on other forums that with congested engine bays cab off repairs have become quite common and preferred over disassembling front end or wrenching leaning over the fenders and that they are designed to allow mechanics with the right lift and tools to do this quickly. Apparently especially true for 3/4 and 1 tons. It's standard 2 hours of shop time for an F-250 to both remove and re-install.
    Doesn't seem that its a minor work, but not that major. I replaced 2 transmissions in my Ram. That was major hours of shop time.

    I can understand why laypeople would be upset see that level of disassembly. Likely thinking that it would not be put back together with the same precision as on the line in San Antonio.
    For those folks, make sure you steer clear of aviation maintenance facilities. You'll never set foot on a plane again!

    I'm just not seeing more than a handful of unique instances. I'm going to go out on a limb here and bet this turns out to be a small bad batch of parts issue for a small number of the first owners and should not be indicative of anything more broadly than that. I think those elsewhere making sweeping recommendations that this motor was/is "rushed, unproven, defective, time bomb, should've kept V-8, etc." are taking some long odds when talking about Toyota. More likely they are looking to create clickbait. I could be dead wrong (see Tacoma frame), but if choosing to bet on Toyota's Engine Engineers vs. Youtuber/FB reviewers, my money is on the former.
     
  21. Jan 16, 2022 at 1:43 PM
    #171
    OnThaLake

    OnThaLake New Member

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    I dunno.
    I used to be a mechanic. I agree, with a lift and some familiarity with the vehicle, cab-off would be easy peasy, except when accessories have been added that affect cab removal.

    More to the point though, it's definitely a bad look for a new release. And if you understand the complexity of the devices being added to new vehicles, you'd understand that the concerns are valid. There's no getting around it. More stuff to fail has been added to the truck. And cab-off repairs puts this truck into a "eff the diy guy" category.
    Toyota added servo actuators, super hot turbochargers, extra electric cooling systems with associated plumbing.
    More failure points have been introduced.
    Not saying it's doom and gloom, but you'd be nuts to assert that the long term ownership of this new Tundra will be as trouble free as previous generation. Especially since day 1 cabs are coming off. Did that happen to the 2007? Heck, even the original Nissan Titan was a better roll-out and everyone seems to think those trucks are garbage.
     
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  22. Jan 16, 2022 at 2:03 PM
    #172
    raylo

    raylo not so new member

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    This is that part that really gets to me, too. With the turbos and all that inaccessible spaghetti plumbing sooner or later the cab will likely need to come off for something. If you intend to keep you trucks beyond the factory powertrain warranty almost surely need an extended warranty. But extended warranties for the lengths of time many us like to keep our Toyotas... 10 to 15 years or even more... don't exist as far as I know. I know, we'll all have to get Car Shield. LOL. Or just trade them when the powertrain warranty is up.


     
    OnThaLake[QUOTED] likes this.
  23. Jan 16, 2022 at 3:45 PM
    #173
    winchester44

    winchester44 New Member

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    Somewhat agree, somewhat disagree. Remember old timers telling how EFI "is garbage, give me a good old carburetor that I can fix myself" Turbos have been around a long time now.
     
  24. Jan 16, 2022 at 4:00 PM
    #174
    Abos

    Abos Long live 5.7L V8

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    Turbos can be reliable or crappy like anything else. I've owned turboed vehicles in the past and have experienced both. I had a WRX and had tk replace the turbo 2 times in 120k miles. My last car was a speed3 and I never had a single issue on the factory turbo for 118 miles.

    I don't know much about the turbos used in the new Tundra but I'm told this engine has basically been used on the Lexus platform for quite some time. Given that there are two turbos and replacing them is a hell of a job, I really hope they are reliable. I could replace turbos on my two precious cars in my garage in a few hours.
     
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  25. Jan 16, 2022 at 5:10 PM
    #175
    Keepontrying

    Keepontrying New Member

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    anyone think of how it will be to change the spark plugs on these and how often? anyone check their maintanence manual.
     
  26. Jan 16, 2022 at 5:17 PM
    #176
    Toyota1234

    Toyota1234 New Member

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    I seen someone post on Facebook today that there check engine light came on for the waste gate problem AND brake function issue at the SAME time. That to me makes it sound like a program error.
     
  27. Jan 16, 2022 at 5:24 PM
    #177
    Jbehredt

    Jbehredt Burgeoning member

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    How do I check to see if I have this issue on my truck!?!?!? Muahahaha!
     
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  28. Jan 16, 2022 at 6:02 PM
    #178
    xc_tc

    xc_tc New Member

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    I don’t think so because only a small number of people are having this issue. If it was a software issue it would be everyone. Besides, when Toyotas go into limp mode, the malfunction triggers other functions to stop working like pre collision and others. If it’s another brake issue, I would guess maybe a wiring problem like a damaged harness due to poor assembly.
     
  29. Jan 16, 2022 at 6:13 PM
    #179
    Coal Dragger

    Coal Dragger New Member

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    I wanted a faster vehicle so I also bought a Chevy SS... because 4 door sedans with big V8’s are hilarious.
    I don’t know what level of technology and complexity starts eliminating the ability for most DIY guys and gals to repair their own vehicles. This new Tundra definitely moves the needle in the wrong direction though.

    How many “simple” trucks are left for sale with nothing but port fuel injection and natural aspiration? The Ford Super Duty 6.2L and 7.3L, and the Ram 5.7, and 6.4L are the only ones I can think of.

    The Ram engines both have active fuel management. So those probably don’t count either.
     
    Last edited: Jan 16, 2022
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  30. Jan 16, 2022 at 7:15 PM
    #180
    Alloutdrs1

    Alloutdrs1 New Member

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    Cab off or pull the motor, like others have said the cab off is easier. Now if the tundra is designed to be cab off repairs or not is something we don't know yet.
     

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