I have a 91 xj with a AW4 with around 175xxx miles on it, i have a 3 in lift with 31s


the last couple of weeks that i have been driving it everyday i have noticed some trans problems
0 to 45 the trans shifts fine, but 45 to about 60 if i cruise within that speed if i hit a bump in the road (to me) it seems to down shift and then shift back but it only seems to do it on like back roads so it is really bumpy, i drove to work on the main roads and it still did it but not offten

so i am just curious on what i should check for

it is hard to explain but if u have any question i will answer as best as i can

thanks for the help