I've replaced both fuel pumps, both tanks are brand new, I beefed up the wiring & made another ground for the pump, traced all of the wiring 100%, replaced the fuel pump relays.
The issue persists with the front and rear fuel tanks so-
I've replaced all the spark plugs and lead wires, the ICM is new from Motorcraft.
It initially takes about 20 minutes for the truck to warm up and start sputtering until it sounds like it's suffocating for fuel, I can flick the key off and back on instantly while coasting and it runs great again for only a few minutes until it starts to chug and buck again.
I put my fuel pressure gauge through the dash to watch it while driving and it's not lacking fuel pressure but sure feels like it is when it's warm. Could this be my ignition coil? Or vacuum return to the tank maybe?
have the same problem?
Thursday, November 17th, 2022 AT 8:22 AM