Check the fuse and the relay. If it's the fuse, and the next fuse blows out immediately, be suspicious of the fuel pump.
The fuel pump is bad. It has probably locked up and will continue to blow the fuse. You could apply 12 volts directly to the pump through an in-line fuse to make sure. Make sure to use an in-line fuse if you try this, and do not make your final connection at the pump. A spark there is dangerous.
probally wired the pump wrong
A fuse blows due to an over current condition. It could be a direct short to ground, or the "load" item pulling to many amps. The load is what ever item the circuit contains ie: fuel pump.
you know ive seen an s10 come through the shop that had a similar problem,see if you have anything plugged in to your 12 volt cigarette lighter,they had a charger that was bad and it would blow the fuse as fast as you could plug it in
I had the same problem it was a shorted wire under the driverside causing the fuse to blow when you turn the ignition my downstream oxygen sensor wires shorted out (melted and fused together). check for anything shorted out connecting that fuse.
Either a bad fuel pump (most likely) or a short in the wiring somewhere. Suggest you disconnect the wiring from the fuel pump, put a new fuse in and see if it still blows. If no blow, bad fuel pump. Still blows, short in the wiring somewhere.
If it blows while driving, I would replace the fuel pump. If it blows when trying to start, I would replace the starter.
check wiring to injecters,sounds like a short.
Either the starter, or the fuel pump has failed and is pulling too much current. If it blows when cranking, it is the starter, if it blows by just turning the key on it is the fuel pump.
remove fuel pump fuse. then start engine it will stall when fuel runs out change filter then replace fuse.
FP is an abbreviation for fuel pump. If the car quits when this fuse blows you probably need to replace the fuel pump if the fuel pump wiring circuit checks okay.