GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

4l80 e acting strange

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Old Mar 1, 2016 | 09:41 AM
  #1  
tim wellington's Avatar
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Default 4l80 e acting strange

randomly unlocks in 4 ,starts off in 2nd unless over 50% throttles .slight hesitation between 2 and 3 shifts .this not constant but random .and if i stomp it does fine. i am think maybe more line pressure sincs this happen after i loosin up stall.any body with hp tuner and loose stall check there line pressure setting and get back to me please
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Old Mar 1, 2016 | 09:51 AM
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I know with mine, I was commanding 90psi from 320ft-lb to the max.
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Old Mar 1, 2016 | 10:59 AM
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Default 4l80e

Originally Posted by madmann26
I know with mine, I was commanding 90psi from 320ft-lb to the max.
this fix yours . kinda guess at mine because i running 4l60e tune, i did relay method .instead of segment swap
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Old Mar 2, 2016 | 07:50 AM
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Default trans

got it fixed
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Old Mar 2, 2016 | 08:28 AM
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What was it?
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