Today I was driving and my 3rd gear went out, and i have to slam it into 3rd in order to hit 3rd, if im idling, it will go in with out a problem, but not above idle, and I can put it in 3rd with out using my clutch, do I need a new clutch or is it my transmission?

 

sounds like your trani does it have a t45 they are bad for bending forks will it still go into 4,5,r? go to a shop and stop slamming it into gear the stock shifters in them will overthrow the gears that is bad