A few weeks ago I was coming home from a weekend trip to the Glamis sand dunes (which btw, the Military 37s did AWESOME in the dunes), leaving a border patrol checkpoint when the truck acted like it was running out of fuel. I was on the rear tank (a new 38gal one) at 1/2 tank of fuel. I pulled over with it still stumbling when the truck shut down. I thought maybe all the bouncing around in the dunes might of gotten the float stuck somehow, so I switched the tanks, and after 20 seconds or so of cranking, VOILA the truck started. Drove fine the rest of the 200 mile trip home.
So I drove around on the front tank until I finally had time to inspect the rear. Problem was there was AT LEAST half a tank of fuel still in, so I quickly said forget pulling it down. I switched back to the rear tank, started the truck, and ran around all weekend... Maybe 30 miles or so, before the truck did the exact same thing, acting like it was starving for fuel.
This time, I was able to switch tanks before it died, ran, and switched back, and it hasnt done it for the last 20 miles or so.
Do you guys have any idea what it could be? I was trying to find a diagram of how the fuel selector motor works, but haven't had any luck yet( I was thinking possibly a relay going bad?) Any input is appreciated! Thanks again guys!