LS1TECH - Camaro and Firebird Forum Discussion

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-   -   4l80e won't shift past second (https://ls1tech.com/forums/automatic-transmission/1950849-4l80e-wont-shift-past-second.html)

Turboranger Jul 7, 2021 11:35 AM

4l80e won't shift past second
 
Really looking for some verification here before I pull the trans again and disassemble to check stuff.
symptoms are park reverse neutral 1 and 2 work(although there is no noticable shift from one>two)
Line pressure is perfect to specWill drive in what seems like second as usual in d2 while 1-2 solenoid show on then off, solenoids have all been verified working, however 2-3 and 3-2 and tcc never show activated while driving, when in d3 after second it seems like it shifts to third but goes into what feels like neutral, if I command 3rd gear trans basically locks up as if I have a trans brake, command 4 does nothing same as command 1 or two still feels like second only, no codes in computer, shaft speeds look like slip when going into what should be 3rd
I believe I didn't pay attention when assembling the direct drum and installed the intermediate sprag backwards, would just like to see if my symptoms match up to what I think I did, tested functions and commanding gears while on jack stands, thanks in advance

truckdoug Jul 7, 2021 08:45 PM

i think you answered your own question lol

Turboranger Jul 7, 2021 11:42 PM


Originally Posted by truckdoug (Post 20364758)
i think you answered your own question lol

I Was 99% sure that's what I did just wanted some verification, tore it down and she was in backwards, don't know how exactly I managed to over look that but I did


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