Originally Posted by 95SWB

Spent all day wiggling wires! No luck, all the diagrams I'm finding are all varying. Have the fuel injection harness out and testing circuits nothing is crossing except injectors 1,3,5 and 2,4,6 which I assume are "2" banks of injectors and when the firing order is 1-5-3-6-2-4 does that mean when cyl1 needs fuel that cyl5 and cyl3 also receive fuel? Which means the computer is dumping fuel into cylinders when not need? I know that is off subject but this could be a huge part of why everyone complains about fuel mileage. Anyways I believe that the injector harness passes, would the rest of the engine harness that supplies distributor, knock sensor, coil, radio capacitor and a/c switch? From there if everything passes it will just be power distribution box pcm and ignition switch on column? I have replaced key switch computer icm map sensor coil and problem persist with new parts and old parts.

Originally Posted by Chris_1

I think that the fuel pump is supposed to get 12v for the initial prime and then something like 5 or 6v for constant run if the engine is turning. The way I've been lead to understand it anyway. I think that's why there's 2 circuits in the relay.

I have seen a problem occur with the wiring under the relay corroding because of the constant power. You have to unclip the power distribution box, unclip the bottom cover and turn it over to look.
Just a possibility, but at this point you have to check everything I guess.
Other strange possibility is maybe a bad ground ?

Just throwing things out there.