I have a 94 pontiac firebird that keeps overheating?

I have a 96 and was also having the same problem, I've now replaced most of the cooling system, but I do believe that the original problem was the fact that the lower hoses were a bit spongy and were collapsing, not allowing circulation and causing overheating. Change all of the hoses, and if that isn't it, have your sensors checked. Good luck, it's a tremendously fun car, I love mine!!!