Hi Patrick,
I had the same problem. Perhaps the solutions mentioned will work for you, but if not, check for debris from the gas tank that has gotten into the fuel line. The problem I had was that my truck would start and run, but as it warmed up I could not maintain RPM. What was happening was that the debris was accumulating at the filter, and the time necessary for the accumulation to inhibit the flow of fuel was the same as the time necessary to warm the engine. So in the end, the warming engine disguised the real problem. RichardR
