Keep blowing fuel pump fuses and already changed the fuel pump relay, didn't solve the problem. 1995 Chevrolet Lumina 6.1 Car

Obtain a wiring diagram and proceed methodically to rule out potential causes, thus establishing a "known good baseline." Look for direct shorts, by checking the ignition switch, as well as wiring going to and from the under-dash fuse box. Try jumping the proper terminals going to the fuel pump relay connector and see if the fuel pump runs, when the ignition switch is turned to ON. If the fuel pump doesn't run, use a DMM and check continuity going to the fuel pump. The fuel pump itself may have a short in the field windings. Be sure to check the fuel pump's ground.

The problem may even appear as a problem with the fuel circuit, but really originate elsewhere; i.e. is there anything else on that circuit? There may even be a short in the ECU causing the fuse to blow. Disconnect the negative battery cable before working around the fuel pump. Keep a fire extinguisher handy.

Relay more than likely isn't or wasn't the problem. The pump can draw enough amperage to overload the circuit, and pop a fuse, if defective. A grounded wire to the pump can also pop fuses. Another test would be to put an ammeter in the pump circuit. A continuity test from relay connector to pump connector will show a complete circuit or a grounded circuit.

Uhm, 6.1? You may mean it's a 3.1?
The PCM controls both power and ground on this vehicle.
What fuse, exactly are you losing?

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