Engine P1151 & P1131 appeared and I need help

Eric_WTM

New Member
Apr 28, 2019
2
0
1
oceanside
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.
 
  • Sponsors (?)


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.

What have you done to rule out:
  • Intake vacuum leak
  • exhaust manifold leak.
 
  • Like
Reactions: 1 user