Help, I have 94 3.8, I can start it and it will idle fine and then it will idle high and then drop! When I put it in drive it some times will spit and sputter for a bit then drive fine again until I am on the freeway, goes through gears ok until it hits overdrive the it loses power and kicks down! It does this always at 100kmph! I pull over and work out the roughness by pumping the gas peddle several times and once it red lines it will go ok for a little bit! Also when I put the peddle to the floor nothing happens until I slowly take it back up!