Where is the fuse 4 the fuel pump? - 1996 Mitsubishi Eclipse

https://blog.bavauto.com/5677/bmw-e46-3-series-engine-electronics-fuse-pack-in-underhood-e-box/

Fuse 1 - 30A - DME, Injectors, SMG Hydraulic unit
Fuse 2 - 30A - DME, Idle control valve, Fuel tank ventilation valve, Fuel pump
Fuse 3 - 20A - E-box fan, Transmission RPM sensor, Camshaft positioning sensors, Mass airflow sensor, Fuel pump relay, Secondary air pump relay, A/C Compressor relay, Fuel tank leakage diagnostic module, SMG selector lever
Fuse 4 - 30A - Oxygen sensors and oxygen sensor heater circuits.
Fuse 5 - 30A - Fuel injector relay.

I suspect the fuel pump circuit is drawing to much power. Do you have something else hooked into those wires(Audio equip?) The fuse is there to protect the relay. Have you put a bigger fuse (bigger number) in there to keep it from blowing the fuse? If not I suspect a bad fuel pump or a stuck fuel pressure regulator(Causing the pump to work too hard- drawing more electrical power) Just remember, its hard to put the smoke back in once it catches fire.

The pump relay is in the relay - fuse box in the engine compartment. Your owners manual should have the details.

There appear to be 2 fuses that can affect the fuel pump. #8 which provides power for the fuel pump, and #4 which provides power for the fuel pump relay. Both of these fuses are in the High Current fuse panel, which is located in the engine compartment near the battery.

The warning in the owners manual states: Always disconnect the battery before servicing high current fuses.Ford recommends that high current fuses be replaced by a qualified technician.

The fuel pump relay is located in the fuse box drivers side of fuse box

common problem with chev trucks. the square 4 wire plug on the top of the fuel pump is known to go bad. Often shorting the fuel pump. replace the pump with the new pigtail they provide in a good quality fuel pump.

Check the fuse for the fuel pump, you can refer to the owner's manual for the location of the fuse panel and a diagram showing where the fuse for the fuel pump is located.

Check fuel pump fuse with key on and with a test light. Fuse should light test light on both sides of fuse. The check fuel pump relay (not sure of location) probably is fuse panel in engine dept. should here it click when key is turned on. You can do this next step 1st or last and thats check power at the plug were harness plugs into sending unit. Have someone turn egnition on and off every 3 to 4 seconds due to power to pump usually shuts if car is not running every 3 - 4 seconds.

won't claim as a solution but...

Have you verified that fuel is pupming (is the fuel pump working?)

there is a pressure regulator on the end of the fuel rail that is vaccuum activated.... is thier vaccuum getting to it to create pressure for the injectors..

Just s few items to check....