Torque converter on a 84 mustang C 4 3 speed trany .allready changed trany that slippin .new hardly move car

one bolt is broken off bell housing.never changed the torque converter the first time ,got tranny from pull-a-part so its not nessasarily a good trany,but is it possible that the torque converter was my problem all along. i,m going to use an easy out to fix the bolt while its out.but i dont want to take this apart any more times then i have 2.is ther any way 2 know if a tranys good with out putting it in? new or used torque converter It only 12$ for a used .can it be checked with out putting it in?

Torque converter on a 84 mustang C 4 3 speed trany .allready changed trany that slippin .new hardly move car
theres not much can go wrong with a torque converter, except when the tranny goes out and fills them with debris :(
Reply:It is possible that the slip fit fins in your torque converter came free in which case the tranny would slip. drop the pan and drain your fluid and replace the filter. Odds are you happened to pick up another bad tranny though. Good luck.
Reply:The C3 trans is a pretty simple tranny to rebuild. I have done several tranny rebuild on C3 C4 Trannys TH350's and th400's 727 torque flights. A lot of the older trannys are pretty simple. Rebuild kits are dirt cheap. (Around 50-75) I'm surprised you used the old converter. anytime a tranny starts to slip thats an indication that the clutch packs are starting to fail. When they fail they shed lots of material in to the fluid. I would locate a shop that will do a tranny flush (Not a drop the pan and refill) they will pull the pan attach the flush system and flush all the old fluid out of the tranny and Converter. they will also be able to see if there are any large particles in the fluid. (recommend to do this once a year. the 66 Coronet that I have has 278,000 on the tranny after my rebuild.) you should, if you treat her right, never have to replace a transmission again. Let me know if this helps. But definitely replace the converter.