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HELP: 4L60E Not Shifting Under WOT

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Old 05-07-2012, 09:41 PM   #1
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Exclamation HELP: 4L60E Not Shifting Under WOT

Posting this for a guy I know.

He has a 2000 Z28 with headers and intake that he says doesn't shift under WOT, whether from a roll or dig. He said under normal driving it is perfectly fine, but if he romps on it, it will just rev until he lets out.

Any ideas?
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Old 05-07-2012, 10:49 PM   #2
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I know it can be hard to find things here, but this issue gets discussed in detail about every other week. Start here:

http://ls1tech.com/forums/automatic-...shift-wot.html

Typically, something has changed, such as a higher stall converter, the MPH to RPM ratio is no longer the same and the tune is now hitting redline before hitting the shift MPH. Typically a tune to reduce the WOT shift MPH by 5% or so will solve the problem.
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Old 05-08-2012, 11:14 AM   #3
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Had the same problem in my camaro. Transmission is gone
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Old 05-08-2012, 01:22 PM   #4
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post #2 and 3 are most likely. The question is....did it just start this on its own with no work or changes to the car? If so, tranny time...if u been changing gears, tune, stall, etc. u will have to go in the tune and change WOT shift parameters as indicated.
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Old 05-08-2012, 01:22 PM
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4l60e, converter, gears, l460e, nitrous, notshifting, open, shift, shifting, stall, throttle, transmission, wide, wont, wot


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