2010 Ford F-150 Lariat 5.4L Super Crew 4x4 - FUEL ISSUE?

Asked by Oct 08, 2016 at 10:32 AM about the 2010 Ford F-150 Lariat SuperCrew 4WD

Question type: Maintenance & Repair

A couple of weeks ago I was accelerating up a big hill... truck started
chugging.  If I pushed the accelerator harder, it chugged worse & the check
engine light came on.  It didn't stall though.  I was afraid I was going to be
stranded so I eased off the accelerator & the check engine light went off &
it stopped chugging.  If I hammered on it again, the chugging & the check
engine light happened again.  I checked the oil - all was good.  Then I
added some dry gas at refuel.  It's been okay since but I haven't "beat on"
it at all.  Today I drove the truck 15 mins & went on a jobsite for 30 mins.  
When I went back to the truck to start it, it kind of groaned, clicked &
wouldn't turn over.  I tried 3x.  The dash lights were on, so I don't think it's
the battery or alternator.  After about 20 mins, the truck started a little slow
- I kind of thought it wasn't going to start & then it did.  I drove it 15 mins
back home.  I started & restarted it 3x in the driveway.  Truck has 139k
miles on it.  Only maintenance that has ever been done other than
brakes/tires is regular oil/filter/air filter changes, ball joints & I just recently
replaced an actuator that controls dual temp (seat/console removal & dash
disassembly).  I'm thinking the fuel filter is probably in order? I believe the
FPDM module just stops working one day without warning, so I don't think
it's that.  what is a good trouble shooting sequence to determine if it's fuel
system related, a spark issue, air flow issue or some other sensor?  I don't
have a ton of auto experience & definitely cannot afford to take this thing to
the dealer for diagnostics.  We live in WNY with heavy salt, etc.  Body is
starting to rust holes in it behind the passenger door of the crew cab.  
Thanks in advance for the assistance.

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