Transmission tuning question
09-14-2005, 02:23 PM
#1
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Transmission tuning question I have a built 4l60e with a 3200 stall, in my tune I tell my transmission at WOT to upshift into second at 6700. But it always shifts on its own at about 6400-6500. Why wont it rev up that high? This goes the same for my 2-3 shift as well.
09-14-2005, 02:48 PM
#3
That wouldnt be the problem. The pcm has to see Both to make the shift..
So if he is commanding the shift to be 6700 and it is shifting early. What it is probably, is that the pressure in the trans is too high at that torque rating and so the trans is shifting early as a fail safe on the trans. Raise the mv offset voltage to the trans.
It will fix that problem.
So if he is commanding the shift to be 6700 and it is shifting early. What it is probably, is that the pressure in the trans is too high at that torque rating and so the trans is shifting early as a fail safe on the trans. Raise the mv offset voltage to the trans.
It will fix that problem.
