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Transmission removal without engine?

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by chris14020, Dec 10, 2018.

  1. chris14020

    chris14020 Junior Member

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    Hello again. Long story short, I have to remove the transmission from a 2012 Prius Plug-in. Is there any way to do this without removing the engine as well? I've taken both out, but I never tried to just get the transmission out.

    The reason I am doing this is, the engine was replaced. The entire thing was put back together. After about 60 miles, there is now a heavy 'rattle' when the thing is in park. When in drive/reverse whether stopped or moving, as long as torque is being put against it, it will not make the noise. It also does not seem to make the noise in EV mode. Anyone have any ideas on the situation? I'm suspecting the torque damper/limiter (clutch-looking disk in there). Are there any 'access covers' to see in there? I can't recall. Thanks!
     
    #1 chris14020, Dec 10, 2018
  2. Mendel Leisk

    Mendel Leisk Senior Member

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    When you're underneath there's a black plastic cover of some sort, in the vicinity. I've noticed it when doing oil changes; it's somewhat loose, not sealing anything, and I'd suspect it could be popped out if you push in the right place. Not sure of it's purpose, but maybe for inspection.
     
    #2 Mendel Leisk, Dec 10, 2018
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  3. Mendel Leisk

    Mendel Leisk Senior Member

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    Here's a still from @Ragingfit 's engine swap video, episode 6, at 15:48, shows that panel, and enough of the driveshaft you can orient:

    upload_2018-12-10_16-12-54.png
     
    #3 Mendel Leisk, Dec 10, 2018
  4. bisco

    bisco cookie crumbler

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    are all these things going on with no trouble codes?

    how many miles on her?
     
    #4 bisco, Dec 10, 2018
  5. chris14020

    chris14020 Junior Member

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    I haven't Techstream'd it, but I think so. And the engine was just replaced with another used engine, so sorta irrelevant. The original engine had a rod put through the block.
     
    #5 chris14020, Dec 10, 2018
  6. cnc97

    cnc97 Senior Member

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    If it was me, I would just pull the engine back out. Less hassle then trying to drop the trans out the bottom.

    I would double check for codes. Misfiring will cause the engine/trans to make a horrible racket. But it might be one of the bolts has backed out of the damper cover, or a loose flywheel bolt.
     
    #6 cnc97, Dec 10, 2018
    Mendel Leisk, Yea Right and Raytheeagle like this.
  7. Ragingfit

    Ragingfit Active Member

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    Please try unplugging the EGR. I know it sounds like I'm barking up the wrong tree but I spent a few years tracking down the cause of my rattle and it was the EGR. The EGR gets in a somewhat open position and the engine is choked with exhaust. It starts to rattle and chug at slow speeds or parked if the engine is running. The electric side of things keeps the Prius running even when it's missing badly.
    The transmission is extremely robust, although the drive plate does go bad occasionally.
    The transmission is static when parked unless the engine is running. In EV mode the transmission is employed but not the engine.
    Unplug the EGR and test it out. If that fixes your problem, replace the EGR. This is not the same as cleaning the EGR. FYI - There was a recall on the EGR.
     
    #7 Ragingfit, Dec 12, 2018
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  8. Ragingfit

    Ragingfit Active Member

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    #8 Ragingfit, Dec 12, 2018
  9. Mendel Leisk

    Mendel Leisk Senior Member

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    Maybe someone can make heads-or-tails of the attachment, the Repair Manual's EGR troubleshooting procedure. It's over my head, and requires Techstream. It's predicated by the car showing a code (P0401).

    It also mentions taking readings from the MAP sensor. That sensor is in the intake manifold, directly below the throttle body. If you haven't got an effective oil-catch-can installed that sensor is pretty much swimming in oil. Maybe it's still functional thus, not sure.
     

    Attached Files:

    #9 Mendel Leisk, Dec 12, 2018
  10. RightOnTime

    RightOnTime Senior Member

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    Try checking the exhaust shield, and the two long header bolts that lead to your Catalytic converter. Also check the engine mounts too.


    iPhone ?
     
    #10 RightOnTime, Dec 12, 2018
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