Yea i have a 94 F150 and recently it has been slipping and i guess missing its shift right around 40-50. its not reving high it just kinda kicks. and also going up steep hills i have to down shift because leaving it in drive it cant go over 10. if anyone knows what is messed up let me know and ill really appreciate it . tahnks

 

Sounds like you fried the tranny. Check the fluid, see if it's brown and stinks like it's burnt. You might be able to get some more life out of it if you change the fluid and filter.

 

Could be low or destroyed fluid. Like JCMS said, change the fluid and filter and you may be okay for a while.

 

Sounds like the tranny is fried... Might want to start looking for a new one.