1995 oldsmobile cutlass supreme fuel injection fuse

Hello, it's terribly difficult to provide advice on the scale you're hoping for, because it means sharing wiring diagram information and components on the circuit to be inspected. Yes, it does sound like you'll have to perform circuit testing to see what's going on. I'd strongly suggest obtaining the wiring diagram and shop manual to review on your own as you perform testing. I can say that the 15 amp fuel injection fuse is circuit protection for circuit 639, which is a pink wire that splices into other components -- first a splice to another two pink wires - one that goes to the crankshaft position sensor, and one that goes to the camshaft position sensor. Then, the original pink circuit wire continues to another splice that splits into 6 pink wires to the 6 injectors. I do not feel like any of the end components - the 2 sensors or the 6 injectors - are the failures; it's far more likely that there's a short somewhere in a wire due to damage caused by some kind of outside influence. It's actually as simple as that. Follow the pink wires from that fuse. Note that the other 2 fuses in that box -- one that goes to the engine control module and the other to the ignition module are also leading to pink wires! So make sure you have the right ones. Good luck...