Hi all 2003 f250 4x4auto 52000ish miles second owner . Last nite at -4 truck plugged in started fine let warm up good fuel ran fine at -23 couple days ago . Head down road about three miles truck starts loosing power dies won't restart wait one Minet cycle key truck starts but not running on all cylinders in a couple minutes smooths out runs fine . For a few miles same thing in my thirty mile trip to town it did it four times buy the last time I got it in neutral fast enough it didn't stall it idled rough slowly smoothing out .i know there going to say gelled fuel but it is same fuel that I ran with at -23 no problems. Didn't shut it off in town let it on high idle ran fine thirty mile trip home did not turn on check engine light only known mode to this truck is egr unplugged came to me that way build date 2/03 the fuel is from same place I always get it and I always put white bottle of powereservice in at fill up Also I replaced icp sensor 1500 miles ago thanks in advance

 

Got to read codes, there are many options, scan gauge 2, autoinginuity, dash boss, dealer? I don't think it is fuel problems given your note above. When was last time oil and filter, fuel filters (2) empowered changed? Using Motorcraft filters is very important for these trucks.

 

Yep you are going to need some sort of monitoring device. A scanguage 2 would fit the bill. While it does not act as a ford code reader it will tell you other parameters that would help people on here in diagnosing it with you. Without this key information it will be all shots in the dark. I would check your batteries and check the FICM voltages. Either can cause damage to your injectors that would mimick fuel problems. It could even be the alternator acting up as well. I'm leaning on the charging and electrical system health. Until further info can be supplied

 

Gauges are a must for 6.0 owners.

The Edge Insight CTS will let you have 8 items displayed on the screen at the same time. Then add at least a fuel pressure gauge on the pillar or elsewhere. That way if it were to happen again you could look at the gauges and be back on here telling us that the needle on the fuel pressure gauge was bouncing up or down, or the FICM volts was down in the 30's, etc, etc, etc. It could be batteries, alternator, fuel pump ....

Just to illustrate to folks out there who aren't already aware:
i) neither of those items will set a check engine light (hell the fuel pressure isn't even measured by the truck)
ii) both could leave you stranded
iii) both could cost you A LOT of money if they damage injectors
iv) both could be prevented or caught early with gauges

Without numbers most of the time we'd be just guessing for you.