This is a Ford Bronco II section - my first suggestion is to get rid of the Oldsmobile, or post your questions in an OLDSMOBILE section
In the tank
No relay on this model. You may have a plugged fuel filter or a fuel pump that is getting weak.
try bypassing the fuel pump, and directly injecting fuel, this will tell you if the problem is the pump, the lines, or further ahead
Yes it has both.
Its under the gas tank in a 93. Mine just went bad!
Underneath your hood, behind the passenger side headlight, behind the core support, is a bank of 2-8 relays. One of those relays is the relay needed for your fuel pump. There will also be a fuel pump relay fuse located there.
I have yet to identify which relay is specifically for the fuel pump,however, the relays are mounted on the passenger side of the radiator .
where is the fuel pump relay located on 1995 oldsmobile cutlass supreme 3.1L
The fuel pump is in the fuel tank and the fuel tank will have to be removed to access it. If you do not have the skill or equipment to do this properly, I suggest taking it to a shop.
Under the car by the left rear wheel next to the gas tank.
The reset switch for the fuel pump is generally located in the trunk of the car although some are under the dash on the drivers side of the car . Check your owners manual for a specific location .
over there