[Lgt18 & 116]

I have an '02f250 with a 5.4 . It started runnin rough then stalled. I came back to it the next day and it started with a little sputter then ran fine until I shut it down and tried to restart it an hour later. I changed the fuel filter thinking maybe it was plugged .130k I can't remember if or when I changed it. It ran fine for a bit and now the problem is back. No idiot lights on the dash, only other problem is the typical broken manifold bolt.
Thanks in advance for any help

 

[T13S]

I had the same thing happening to my gmc last year no lights on or anything would run rough stall some times other times would run fine so I hooked a tech 2 to it and watched the O2 sensor readings and one of them was way off from the other 3 sensors changed that one and it solved the problem

 

[Lgt18 & 116]

Would the leaky exhaust manifold cause a problem like that?

 

[Loremaster72]

I'm not familiar with your model, but could it be a dying electric fuel pump? Usually they are all or nothing, but if it became intermittent somehow, I'd guess it would behave like that. I don't know if that would throw a trouble code or not.

 

[Tractor-Holic]

Water in the gas maybe?...replacing the filter may have "cured" it until more got into it and wouldn't let gas flow past it..water can block a paper filter and keep fuel from passing thru it..

Could be the EGR valve got hung up and stuck open,but you should be able to get it to start at least if that were the case..it would not want to idle ,and run rough if it hung open..

Most fuel injected vehicles are very fussy about fuel pressure,just a few pounds under the correct specs can make an engine run weird,not start,or stall and not restart...
I would get the fuel pressure checked first...also check for spark and a pulse at the fuel injectors right after it dies,it could be a coil or ignition module,crank sensor,etc,failing when it warms up..crank sensor controls the fuel pump on most fuel injected vehicles too..and they dont usually set off the CEL when they fail on many vehicles..