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What is your question?
fuel pump will not prime when vehicle is at normal operating temperature . Primes fine when vehicle is cold Checked fuse and swapped relay. Verified problem with pressure test gauge
1 Reply
Hello, What fuel line pressure do you have when the vehicle is at operating temperature? Does the vehicle have a check engine light on? OBD codes? There is an inertia switch in your Ford, and it is mounted behind the kick panel on the passenger front seating position. There are lots of videos out there to help you find it. If the switch is failing, damaged, or becoming hot, it could fail, and cut power to the fuel pump. Also, you'll want to check for voltage at the fuel pump, and fuse when the fuel pump fails to run. Reply here with what you find for further asistance.