I have a 2003 Ford Mustang GT and as I was letting it warm up for work. I noticed that I had a check engine light for P1151 & P1131 and its saying that the car is running lean. The car is running poorly and I checked the fuel pressure "30psi" and the vacuum lines and there all good.
Just wondering. HOW did you measure the fuel pressure? With an external gauge at idle with the intake vacuum reference line connected? If so, 30-32 PSI is good fuel pressure.