I need some advice i have a 86 s-10 blazer 2 wd 2.8 engine my fuel pump isnt fireing my relay is working i can jump the fuel pump but still nothing any ideas im thinking its got to between the fuse box and the relay any body please have some ideas please i already replaced the fuel pump fuel filter both injectors are firing i have plenty of spark im just puzzeld now

are the ecm fuses a & b good?
possible bad ignition modude. check for pulse off the module i belive it's a purple wire.