80's 454 fuel supply challenges
Long time first time. I have an 86 The Executive with a newish crate 454 and 95 Chev TBI on top of it. On a recent trip, we had some intermittent stalling except when I'd step on the gas at which p...
Forum Discussion
Simple Test for you.
Old rig, old wiring, lots of resistance. 12 volts to the pump has lots of termination points before it gets to the pump. Fuse, relay, low oil pressure switch, an inertia switch and lots of harness plug connections. All of these things are old and either weak or corroded.
I have seen this intermittent problem more than once. Test by running a fused, 12 gauge wire, directly from the positive battery terminal to the fuel pump positive connection. Remove the factory 12 power wire from the pump and tape it off and make sure the pump is grounded.
Try it this way for awhile, if the problem never shows it's self again you know you need new fresh wiring to the pump.
Of course, during this experiment you have to be aware of everything that is happening around you due to the fact that all the safeties have been bypassed.
Good luck
Old rig, old wiring, lots of resistance. 12 volts to the pump has lots of termination points before it gets to the pump. Fuse, relay, low oil pressure switch, an inertia switch and lots of harness plug connections. All of these things are old and either weak or corroded.
I have seen this intermittent problem more than once. Test by running a fused, 12 gauge wire, directly from the positive battery terminal to the fuel pump positive connection. Remove the factory 12 power wire from the pump and tape it off and make sure the pump is grounded.
Try it this way for awhile, if the problem never shows it's self again you know you need new fresh wiring to the pump.
Of course, during this experiment you have to be aware of everything that is happening around you due to the fact that all the safeties have been bypassed.
Good luck
