car problems...need a bit o help?

i have a small issue and i was wondering if anyone could help me out.

i have an 1989 2.3l AOD n/a. my car starts and idles perfectly fine but earlier today whenever i put my car into gear (any of them other than P and N) the car instantly stalls out.

i, not knowing anything about cars, figured my tranny finally gave out on me so i bought all the parts to do a T-5 swap. but my question is...would a bad AOD really make my car stall out like that? if its not the tranny what could it be?

thanks!

ok...

ok heres what it does.

i can start the car and it will run fine. not a problem. but when i put it into drive, overdrive, 1, 2, or reverse (anything over than park or neutral) it instantly stalls out on me.

i was planning on swapping out the transmission from a AOD to a t-5 anyways this month. i just want to make sure when i get the swap finished my car still wont do the same thing, stall out when i put it in gear.

also ive been having some issues with my AOD anyways, a few days ago my car woudlnt shift out of first gear while i was driving...really really annoying. normally it had problems shifting only when the car was started in the morning, but as of late its been happening more frequently until the said problem happened.

with the car off and the car in D the car does roll back and i can push it. i havent tried any other gears. but i have noticed that one. will switching to a t-5 correct this problem?

thanks for everything!!