Sources for used 1GR motors needed...

Discussion in 'N/A Mods & Tuning' started by Aspen_S/C, Jun 17, 2017.

  1. Aspen_S/C

    Aspen_S/C Member

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    Hi gang,

    Been awhile, but that's life eh?

    Anyway, I think my motor might be fried in the worst case, maybe a bad ring, bent valve, cracked head, etc.

    Looks like with the new format on the forum, all my info is gone so here goes:

    2005 Tacoma 4WD, 182K, TRD S/C, red URD pulley, 7th injector, UCON EMS with cam gears, etc. URD Spec-U exhaust, upgraded fuel pump, recent S/C overhaul. Truck is used for work with a camper on it, gross weight is about 6K with suspension and breaks upgraded to handle it. I had a head gasket go in 2011 and upgraded to a Cometic and ARP head studs.

    I had an issue last week on a hot day that I missed a shift and bounced the rev limiter while in traffic and about ten minutes later I lost power and got a blinking CEL telling me I was having mis-fires, was just under a 1/4 tank of gas. The power steadily dropped until the motor just died and I was on the side of the road, got towed.

    I got it home and let it cool down for a few hours. Then I started it up and it ran pretty rough, sounded bad and threw a P0351 which was #1 cylinder misfire. At Gadget's advice, I swapped plugs, no dice. Then I swapped coils and the code moved to the new cylinder so the coil was bad. I got a new one and it started right up, no codes.

    Fast forward a couple days and it is just not running right, seems a bit low on power and I hear more "chugging" if that makes any sense. I did a job last night in that I had to put it in 4-low and go up a fairly steep climb for a few miles, gaining 1,800 vertical ( 8,000 to 9,800 feet elevation ). It seemed ok, I did not push it though, kept it at 2,500 or so. But on the way down, I heard that chugging noise a bit more as in a cylinder with low compression was dragging a bit. It just does not sound right and I can feel the roughness through the shift knob.

    So I am feeling pretty unsettled at this point, mandatory compression check which means pulling the S/C off to get to the driver side plugs. But this morning, I started it up which seems a tad fast compared to normal and did some revs. The red flag was when I went passed 3K, I think the guardian on the UCON was kicking in and pulling it back down, something I had not noticed when driving it. Either way, it was doing this up and down thing anywhere above 3K.

    As I said above, I am getting the truck in for a compression test but in the meantime, I gotta start thinking new motor as this one has 182K on it, 130K S/C'd so my luck might be running out.

    What ya'll got for sources?
     
    #1 Aspen_S/C, Jun 17, 2017
    Last edited: Jun 17, 2017
  2. kwigs160966

    kwigs160966 Member

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    Sounds shitty. Although I wouldn't jump to the conclusion that the motor is done yet. Do the compression check and that we'll tell the most. It sounds like it's an electrical issue to me. I have seen a couple of these motors let go. Go through all your wiring and connections to the ucon and everything else.
     
  3. SgtBadA

    SgtBadA Member

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    Have you tried removing the UCON? See if you can't get the truck running on the factory ECU.
     
  4. Aspen_S/C

    Aspen_S/C Member

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    I will definitely work with my mechanic on sorting things out on our end, compression check, any electrical demons and even taking the UCON off for a test.

    I would love to get a line on motors too, this is a work truck so I need to get a handle on all aspects of getting it running.
     
    Redlantern likes this.
  5. Gadget

    Gadget Well-Known Member

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    If you find you have a busted engine, catch me in the office and I can go over the used engines I have access to. I have had great luck with this source and got a lot of folks fixed up with great used engines.
     
    Torspd likes this.
  6. Aspen_S/C

    Aspen_S/C Member

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    Thanks Gadget, I'll do that.

    Mods, I put this thread in the wrong section, could we move it to F/I?

    Also, for kicks I pulled all the plugs ( IKH24 ) on the passenger side which is where the codes were thrown and coil went bad, the gaps are all fine at about .032. But on cylinder #1 which is the coil that died, I notice a bit of oil residue on shoulder.

    Plugs are cylinders 1,3,5 right to left:

    IMG_6433.JPG
     
    #6 Aspen_S/C, Jun 18, 2017 at 7:59 AM
    Last edited: Jun 18, 2017 at 11:09 AM

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