No reverse

[north/west,ex]

My son's 91 with an a4ld has no reverse.
all forward gears are fine and when I shift into reverse I feel it shift but there is nothing there,I am thinking reverse sprag ?

 

[BrooklynBay]

Do you have 4WD, and manual first on the transmission?

 

[north/west,ex]

yes manual 1st works fine as does 4wd

 

[north/west,ex]

The truck is a 91 Explorer with the a4ld of course and a manual tcase
the vb has a transgo kit installed, weve installed new servos.before that it would not reliably shift up and probably went hard into 1rst and reverse due to high rev starts needed because of the chiped/torn servo