I have a 2007 F150 XLT, Supercab 6.5' bed, 4x4 5.4 Automatic with 67000 miles on it. Its not a Flex Fuel

Over the past couple of weeks it would get go through random rough idling spell or stall going down the road. If it was sitting it would idle clear down to 200 RPM's and just sound like an old 'chitty-chitty-bang-bang' car, not a moderng marvel of Ford engineering!

I noticed it patictularly does it this on an incline. Intially I fixed it by just coasing to where it was flat. I normally keep it above half a tank so i dont think its a fuel pump not getting fed. So I replaced the fuel filter yesterday hoping it was full or clogged, no changed.

This morning it would start at all, I removed the negative terminal on the battery, rolled to the level, tried it 30 times. Nothing. I checked all of my connectors under the hood and the 2 below the cab under the plastic cover. Everything was connected. I disconnected the fuel pressure sensor and it fired right up and runs smoother than since I've owned it.

It hasnt had any CEL lights, until I disconnected that sensor. Should I drop the tank and clean it? Is there any special gasket kits or connectors I should be aware of? Should I just replace that sensor? Is it connected with a chain of sensors I should check first? I hate throwing parts at it when they're 100 a piece.

Thanks for the help.

Nick

 

Look at the fuel pump driver module. Mounts on the crossmember just forward of the spar tire. Aluminum-housed module mounted externally; they get corroded and literally break apart.

 

It'll only run if have the vacuum line or the electronic side of that fuel rail pressure sensor disconnected. I looked over the fuel driver module back by the spare tire, it appeared to be in tact. what's the big cylinder looking thing under it?