2005 Mustang GT Erratic fuel pressure
I have a 2005 mustang gt 4.6L it has a turbonetics turbo kit on it. the fuel presure gage bounces around like crazy, it was ok and then one day it went nuts, I tried a mechanical fp gage and the fuel presure is really jumping around, i replace the fuel pump driver module and same thing? if i unplug the fuel rail presure sensor no change? the pump is stock and the fuel presure jumps around at idle and while driving?