[Crasen]

I have an 88 with a 350 but mine is a 1500 and I do not have an ECM B fuse, I do have the ECM 1 fuse, and INJ A & B. I would check to see if one of the fusible links are blown at the junction block next to the fuel pump relay. Is the ECM B fuse the Fuel Pump Fuse? If not that would be another thing I would check, I know it is next to the fuel pump relay on a 1500. I know if it was me and I had to get a truck moving i would consider running a wire from the cigarette lighter wire to the fuse to give it power. Just like some people use to tap into the fuse for accesories, but it would work backwards in this case. Definately only a temperary fix, but it may buy you some time to figure your problem out