My stepson has an 05 Mustang GT with a number of bolt on mods. Intermittently, usually in the heat of the day, the car will fail to start or just quit altogether while driving. A shop that is local to him diagnosed it as a faulty fuel pump and replaced it. This lasted one day, and it's back to doing the same thing. When you turn the key on, normally you'd hear the fuel pump briefly prime, however we don't hear that when it's acting up. The car has 60k miles and all preventative maintenance has been taken care of including the replacement of the fuel filter. I'm wondering about the fuel pump driver module or the fuel rail pressure sensor. Any help or input is greatly appreciated.
Thanks
Thanks