4l80e won't shift past second
Thread Starter
Teching In
Joined: Jun 2021
Posts: 6
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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
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
Thread Starter
Teching In
Joined: Jun 2021
Posts: 6
Likes: 0
