i was driving my 2006 f150 with a 5.4 3 days ago went around the block and it died on me. cant figure out whats wrong it shows a p0191 code i think. It was a fuel rail pressure code i replaced the filter and still nothing any ideas suggestions? i will say i used a sea foamintake foging spray to clean it did it wile it was on like it says to shutit off waited like 20 mins and drive home.it was off for 30 and then i went to leave made it 300 yards and it diedplease help
My best guess would be either fuel pump or fuel pump driver module. Run the diagnostic routine for that code and you'll find the culprit. Pump is in the tank and the driver module is on the crossmember in front of the spare tire. But it's probably one or the other.
same thing happened to me today.... repalced the fuel filter ten thousand miles ago
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