To find it, you'll likely need to:
1. Consult a Repair Manual: A Haynes or Chilton manual specific to your 1985 Pontiac Fiero GT 2.8L will have diagrams showing the relay locations. This is the most reliable method.
2. Check Under the Dash: Many relays are located in a panel under the steering wheel or dashboard. Look for a group of relays and fuses. Sometimes there's a diagram on the cover of the relay panel itself.
3. Check the Engine Compartment (Less Likely): While less common, some relays might be in a less accessible area within the engine bay. Again, a wiring diagram is essential to avoid wasting time.
4. Trace the Wiring: If you're mechanically inclined, you could locate the fuel pump wire coming from the engine harness and trace it back to where it connects to the relay. This is the most time-consuming method, but effective if you have the tools and patience.
Caution: Always disconnect the battery's negative terminal before working with electrical components to prevent short circuits and injury.