Can't Start Truck After Fuel Filter Replacement
I replaced the fuel filter on my 2005 F150 4.6L and my truck started fine after I replaced the filter. I let it sit for a couple of days and now it won't start. When I depressurized the fuel system, I disconnected the safety shutoff switch and started the engine until it died on me. Then I replaced the fuel filter and reconnected the fuel saftey shut off (red cap with plunger). I pushed the reset button and truck started fine.
Now after a couple of days it won't start. I got a buzzing noise in the fuse box. Pushed the fuel safety switch reset and still buzzed. I thought I narrowed it down to the PCM relay. I pulled the PCM relay buzzing stopped and replaced with a new one and now - nothing not even buzzing noise. I have power to the lights and I have good voltage at the battery. Turned the key and voltage stays the same at the battery. I turned the key and the inside lights and clock shut off and the engine doesn't crank at all. Not sure what else to check any ideas?