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47re No Torque Converter Lockup

Discussion in '5.9L 12 valve Cummins' started by ihlinuxdude, Dec 25, 2019.

  1. ihlinuxdude

    ihlinuxdude Registered User

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    I've had a long journey of troubleshooting with this issue.
    Bear with me.
    Several months ago i was driving across the state and my trans just started acting like the Torque converter was locked in, stalling when put into gear, hard shifting. I did the usual troubleshooting, unplugged the trans to see if it would release, it didn't.
    Ordered a new TCC from California and as I was installing the transmission some chafed wires on the transmission harness i hadn't noticed sparked on the frame rail, i didn't think too much of it until none of my gauges would work and was still having a lockup condition.

    Another PCM and a new set of solenoids later I was still having issues.

    I ended up test swapping another valve body in and that seemed to fixed the locked up condition, but now I had no torque converter lockup.

    I rebuilt my original valvebody with a transgo SK-TFOD shift kit. Everything is working great. Its shifting much smoother than ever.

    But again, now don't have TC lockup at all.
    I put a test light on the orange "switched ground" and I do have signal to the trans.

    Im not sure what is left to replace or adjust at this point.

    Any thoughts?


    Thanks y'all.
    20190424_154822.jpg 20191218_163129.jpg 20191219_181511.jpg received_820813871713417.jpg received_1496375557186097.jpg

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  2. ihlinuxdude

    ihlinuxdude Registered User

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    Bump

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