Went to CA to pick up a vehicle last weekend (horror story) on the way home we were headed up a pretty steep hill on i10 and noticed my fuel pressure gauge getting wonky I mean this thing was all over between 0 & 30 psi was running but definitely felt it bog down when the needle went to 0. Fortunately we were close to a rest stop so I pulled in, about a half hour later my wife finally gets through to Geico roadside (@ the same time I found a guy with 5 gallons of diesel) My fuel gauge doesn't work and we had a real rough ride back on this tank with LA traffic I normally just be sure to fill up around 4-500 miles (40gal) Turns out Geico roadside (maybe just not in CA) wouldn't deliver diesel Old timer that had the 5gal of diesel juice refused my 20bux, I told him its gonna cost him atleast 20 to refill it, still refused my 20. Nevertheless fires right up Fuel pressure is normal... pulled into the nearest station for a fillup... it only took a half tank just as my mileage calculation was telling me. We get to Goodyear, AZ and same thing starts happening.. pull in... half tank.. yesterday was cruising and yep you guessed it same thing.. fill up.. half tank. Long story short my truck has erratic fuel pressure once I'm down to a half a tank, I know it's not the straw on the sending unit because I used Larry B's Trident fuel hose.. my common sense tells me this is a lift pump going bad, anyone disagree?