I'm late to this discussion, but want to chime in.
Klaus and HF63 are solid with their posts.

But there's TWO fuel relays to worry about.
One is the Fuel Pump Relay in the main fuse block that supplies
power to the fuel pump.
The other is a relay that enables the fuel injectors, this one is
called the main fuel relay and is located above the radiator in the engine bay.

There's so many problems with these two relays that I recently replaced both of them with new (NOT recycled boneyard relays) to be proactive, and avoid the
hassle when these relays finally fail from old age and kill the fuel flow.
These two fuel relays are like timing belts, when they quit, you're a pedestrian.
Relays will often get funky and flaky before outright failure, a huge heads up.

I found both relays on Ebay for reasonable money, and they are easy to replace.

Bill