1991 F-250 E4OD transmission problems PLEASE HELP

[pmcbride2020]

Tranny slips in all 4 forward gears, reverse works great. fluid smells good, no dust or metal flakes in the pan. dont know what to do i think it is something in the wiring or sylenoid. any ideas are appreciated thanks for you time

 

[blacksnapon]

wiring or solenoids wont cause it to slip. Time to gut the trans.

 

[5.0Flareside]

Its something internal.. The trans will likely need a rebuild