Well, the FP/ECU fuse in my '88 is blowing out. I'm figuring the pump is fried, but before I go dropping the axle and the tank to get to it I'm passing all my diagnostics info past you guys first.. I'm sure ya'll know how much I'm looking forward to dropping the tank...

FP Relay connected: Turn key on, fuse blows as soon as FP relay trips for prime.
FP Relay disconnected: Turn key on, fuse holds.
FP Relay disconnected: Attempt to start, fuse blows as soon as oil pressure builds enough to trip backup FP relay.
FP Relay connected: 0.0 ohms between ALDL terminal G and ground
FP Relay disconnected: ALDL terminal G open circuit

Anyone else smell the possibility of a simple short (heh.. simple.. yeh..), or are the electric in-tank pumps known show a short condition when blown? Death of the fuse was sudden and unexpected, no probs with the car in quite some time... I've gone through a half dozen fuses trying stuff... ugh.

If anyone has a helms diagnostic sheet for this, it would be most useful..

 

Other than a short, the windings in the fuel pump could have fused together(insulation burned off). This would cause a short circuit and result int he fuse blowing. Only way to find out would be to mesure the resistence at the pump.