First of all, when did the problem first start, and was it fine before any previous work was done.If your ecu fuse is popped,you wont get spark or fuel, so try fixing the popped fuse issue first. Check all the wiring to your sensors, that are controlled by the ecu. I had the same problem and it was my O2 wiring insulation was busted and the wires were touching eachother, grounding itself out. So check your wiring. Let me know how it works out.