Hello
I have a Jeep Wagoneer 1987 and lately I cant start my car the mechanic said that the problem is the fuel pump relay but He does not now were is the Fuel pump relay we have tried some of the relays there are visible but none of them seams to be the fuel pump relay so Please if someone knows were is the fuel pump relay for the Jeep Wagoneer 1987 L6 4.0 let me know

How does the mechanic know it's the fuel pump relay? Will it crank at all? Are you getting spark to the plugs? Have you changed out the fuel filter? Is any fuel getting to the cylinder?
GR