It hasn't been that cold here, been in the low 20s during the day, dropping to single digits at night, but I had the same problem yesterday. Fuel gauge showed about 1/8 tank, so I thought maybe the gauge wasn't reading right (I've had issues in the past with it, but its seemed to read properly ever since I got my gauge cluster rebuilt a couple years back). I limped to a filling station and topped it off, adding only about 25 gallons, so the gauge was reading right. The fuel did seem to make a difference though, but didn't completely fix the issue. I had open road, so I put the hammer down for a few seconds. After that it ran about 95% better for the rest of the trip, and after a shut down and restart ran fine the rest of the day. Not sure what caused it either. Its no stranger to cold weather, and its been colder than its been this past week before with no running issues. I don't know if my turbo got stuck and then unstuck (its due for a cleaning, but going to have to wait for warmer weather). Possibly there was some fuel issue that resolved once I got the engine hot enough. Not sure. I guess I'll see if it was an anomaly or not as its not supposed to warm up here anytime soon.
'06 F250 4x4 - 5" Flo Pro exhaust, SB Filter intake, Accufab elbow, Edge Evolution (monitoring only), SCT w/ ID custom tune, FASS 195 pump, Gillette Diesel EGR cooler delete, Sinister Diesel coolant filter, ELC coolant, updated turbo drain tube/oil feed line/STC fitting/oil cooler, ARPs w/OEM HGs, Elite coolant lines, ITP RR fuel system, RCD 175/30 injectors, Powermax, BD CCV, FICM.com FICM w/ ID tune, Elite UP, BPD water pump - 13.069 @ 101.94
'02 WRX - Outback rear disc swap, EBC green pads, DBA pillar vane rotors, TXS UP/TBE/TMIC, Perrin LW crank pulley, PPG billet steel shift forks, ACT Streetlite flywheel & clutch, K&N filter, STi Group N motor/trans mounts, TiC/Kartboy rear diff mounts/subframe lock bolts/outrigger stiffeners, Kartboy SS & all shifter bushings, custom PDX tune for Cobb AP - went 14.1 on a terrible 60ft before most of these mods; shooting for 13.50s