My fiance was on her way home from work on Thursday, and her car just cut off while driving down the interstate. No hesitating, or lockup. It simply just turned off. when trying to restart, it tries to turn over, but won't. I swapped out the fuel pump relay switch today, but no change. When turning the key on, I can hear the fuel pump. I want to check the fuel pressure, but cannot find the port to attach to. I cannot find any diagrams or any info on how to check the pressure on this particular car. It is a 2004 Chrysler Pacifica. Any help would be appreciated.