Just put mine in the shop for the same problem. TSB references high pressure oil pump failure. Sounds expensive, but I'm told that less than 100,000 miles & it is repaired by Ford after $100 co-pay. Merry Christmas to Me!
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You did'nt say if you have had the car (Scanned) to see if the engine control Module has stored any fault codes. You say it runs 20 miles or so before it quits. After cooling does it alawys start back up? What have you been doing to get it running again? The ECM can warm up and quit. It'll get an Troblem code about though. The no spark at the time sort of removes the Cat converter overheating and the ingtion Module ( (the coils are mounted to it). Something getting too hot is likly. Crank sensers and cam sensers both wil do this the crank senser is on the back of the block just above the oil pan. The cam sewnser is underneath the power steering pump and the connector going to it is on top of the front valve cover on the passenger side. Crank sensers will not code and still be bad. Computers if they come back on ever they will code most any problem and the code name is Quad driver failure.
You need air, fuel, and spark to start your vehicle. It may be the fuel pump, filter, fuel pump fuse/relay. You should be able to hear the fuel pump kick on when you first turn your key. Fuel goes to the pump, filter, lines, and engine. If it is getting gas, you need to check for spark. Spark plugs/coil wires, distributor, dist.cap, cam sensor, ect. It can be anyone of them. Check for gas and spark.
Lots of reasoons for a no start this answer is as if it was running OK just the other day and was starting OK. The gas tank has gas? Spinning real freely indicates to me that the timing belt broke. The oil cap off the valve cover look in there to see the cam and crank engine you should see it turn. The fuel pump may not be coming on. The fuel filter could be frozen not letting the gas go though. The spark may not be happening as A senser or also a plug wire or other wire off inspection of these things something off can be the only problem
The fuel pressure should be 60 to 65psi in your system with the engine not running and fuel line primed, (ignition key's to the run position). Once engine is running the fuel pressure should drop by 5psi, change the fuel filter and recheck the fuel pressure at the shredder valve. it's known for the fuel pump to fail when the gas tank runs low or out of gas, the pump will end up burning it self out since the gas is what keeps the electric fuel pump cooled. The other thing to is putting gas through the top of the throttle body to start the engine on the SEFI is a NO NO, well a BIG NO NO. it's been know for the gas in the intake to catch fire and burn up the poppet valve in the injection system causing the replacement of the fuel injection system. Keep me posted and good luck, be gald to help you get your truck running again for the july 4th. OH and it was not mentioned but did the fuel filter get replaced???
Sounds like this maybe a timing belt has slipped (no Compression) if the engine seems to turn over faster than normal you should or the engine is not getting fuel you can use brake parts cleaner spary in intake and see if it fires up if it does the engine is not getting fuel - possible fuel pump