matty_liberty

Hey guys, i own a n/a 2000 liberty/lagacy rx 2.5. when ever i give her full throttle in say 2nd, 3rd and even 4th when it reaches 3500/4500 rpms it just stays there and wont accel till i slowly let the throtttle off but when i give it half throttle till redline it doesnt effect it. any ideas to what might be the cause? its also got a new fuel pump, coilpac and new plugs thanx