ok, there's actually a little more to the story than i had wrote.
I origanly had an art car nonlock converter the went bad. I sent it to a local trany shop (I know big mistake) to have the lockup valve and o ring put back in (fiqured that was a pretty strait foward job for any tranny guy). Also i had them put in an orange stripe i had laying around.
Well he put it all in and said it was working till it warmed up, at which point it just stayed locked as soon as you put it in gear (car would stall). So I said the valve he put in is probably stuck but he insists the converter is bad. Which is why I asked the question if its possible for a converter to go bad like that. I really don't have the money to buy a new converter just to find out it was the valve!
Thanks