My car wont move while in drive but it will reverse fine? on 1997 Ford Mustang

i already changed the gasket to my fuel pan and changed my filter and put new transmission fluid in it. When put in Drive wont take off unless i get up to 3000rpm but when stopping wont go again. reverse works fine. what is the problem (1997 ford mustang V6 3.8)

2 answers
sounds like the clutches are bad in the transmission. Take it to a transmission shop for a proper diag.
maybe you have a transmission problem