1990 Eldorado fuel problems
 

Hello everybody! I have a 1990 Cadillac Eldorado ... 4.5 V-8 with 292,870 miles on the odometer ! up until about 3 weeks ago she ran great , then i started having what i thought was a mis-fire. put new plugs in it and it ran fine for about 5 miles then started shaking again. by way of it stalling in a parking lot at an idle i discovered it was a fuel problem! again i started with the cheapest and easiest thing i could and replaced the fuel filter,while doing so i discovered that when i turn my key the fuel pump doesnt push fuel! so now im thinking its either the fuel pump or the pump relay! only problem im having now is that i dont know the location of the fuel pump relay!! under the hood fuse box and glove compartment fuse box do not have anything marked fuel pump in them.. any help would be greatly appreciated!