The fuel pump fuse feeds the fuel pump relay and the automatic shutdown relay. Pull each of them and see which one will cause the fuse not to blow. If pulling the fuel pump relay does it you have a problem with the fuel pump or wiring. If pulling the automatic shutdown relay does it you will to start unhooking the things supplied by it. If neither does it un plug the ECM . After that you will need to unplug the O2 sensors, Ignition coil, Alternator and the Injectors. You may of also damaged the airbag & antilock brake computers also the radio and dash pod. Un hooking the battery while the engine is running should never be done unless the car has a generator. My guess is the ECM.