Thaks for going to help me out. :unsure: I have a 1990 f 250 4x4 extended cab 3/4 ton,fuel ijection. The truck runs for a little then stalls (alot) the code reader says that the primary and secondary fuel pumps cercuits are faulty.Where are these items? I have dissconnected the fuel filter and saw the fuel coming out for a second and the fuel came out o.k. please help.. 
