i not sure but to me it sounds like the gearsare binding up in normal drive and that could mean rebuild or new trans.......try checking your fluid level and changing it. not sure if it is as easy as a manuel but i would give it a shot if i were you.
if you need a trans i have an auto trans from a 92 dx hatch that will work and i just need to get rid of. ill give it to you for 65+shipping
let me know