ECM B fuse blows when I try to start the blazer what could this be? The fuel pump does not run. It's an 86 Chevy S10 Blazer with a 2.8L v6 4x4 This is our only form of transportation at the moment so any help would be greatly appreciated.
there is an oil pressure switch in that circuit for the fuel pump. A quick test to see if its shorted is to disconn the oil pressure switch and " jumper it" if the fuel pump runs then the switch is shorted out and should be replaced. If the fuse still blows then there is a dead short in that circuit and needs further testing. Let us know!