I have a 2000 Mustang GT and a week ago i drove to work and it ran fine. Get out of work and it turns over but wont start. Next morning i change the fuel filter cuz i knew it was the original and pretty rough in general. Changed it and it ran for a bit then would die. No fuel pressure and pump went out. Replaced the pump and it works and starts and runs but now while it runs...it runs like its misfiring or something. Theres no error codes coming up but the other day one did about the fuel driver? Would that have anything to do with it running so rough? Theres fuel pressure and fuel goin in but just doesnt wanna smooth itself out.