I'm stuck on trying to figure out whats going on with my 94 Gt 5sp. No codes, no CE light. Cruising at highway speeds it develops a really bad miss (multiple cylinders), if i hold WOT for a 5 count (or hold in clutch and "blip" it past 4000) it goes away, and stays away for a few miles, then returns. Fuel pressure is steady during this. (30-40psi depending on load) I've replaced plugs, wires, ignition module, cap, fuel filter, and air filter. These cars aren't that complicated but I cant figure out whats going on. Hope some of you specialist can help me out, or at least steer me in the right direction. Car has 170,000 on it.