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Thread: 4L60E 2-3rd full Throttle Shift

  1. #1
    Tuner
    Join Date
    Oct 2008
    Location
    Perth Australia
    Posts
    161

    4L60E 2-3rd full Throttle Shift

    Wont change into 3rd at full throttle , hits limiter , have to lift throttle and will change.
    Drives perfect at all other throttle positions and speeds.
    Will change into 3rd at full throttle after rolling kickdown.
    Its a built low km trans with new shift solenoids, extra clutches etc. Just a mild LS1 with 370-380 rwhp, previous built trans had the same issue.
    Ive tried everything you can think of, different ecu, the lot. Only thing i havent tried is speed sensor and different OS in the tune.
    Attached Files Attached Files

  2. #2
    Advanced Tuner
    Join Date
    Dec 2012
    Posts
    235
    Your 3>2 downshift speed is higher than your 2>3 upshift speed from 87% throttle and up. Your Full Throttle Shift speeds need adjusting also, they are similar. You need to have your downshift speed lower than your upshift speed. If its on a stock converter that should do. If it's still hitting the limiter, you might have to lower your upshift speed so it starts to shift sooner before hitting the limiter. But fix your 3>2 shift speed first.
    Last edited by h2.4; 09-22-2017 at 10:25 AM.

  3. #3
    Tuner
    Join Date
    Oct 2008
    Location
    Perth Australia
    Posts
    161
    Cheers, ile give it a try.
    Im sure i did this ages ago and was still the same tho.