* The relay is bad: It's either internally failed or sticking. The solution is to replace the relay.
* The relay is not getting power: Check the fuses associated with the fuel pump circuit (consult your owner's manual). A blown fuse prevents power from reaching the relay. Replace the blown fuse.
* Something is causing the relay to not activate: This could be a problem with the fuel pump itself, the wiring harness (damaged wires, loose connections), the inertia switch (if your Skylark has one—it's a safety device that cuts power to the fuel pump in a collision), or a problem with the PCM (Powertrain Control Module) This requires more advanced troubleshooting.
To check and/or replace the fuel pump relay:
1. Locate the relay: Consult your owner's manual or a reliable online repair manual (like Chilton or Haynes) for the precise location of the fuel pump relay in your 1994 Buick Skylark's underhood fuse box. It's usually labeled. The relay is typically a small, square or rectangular component.
2. Identify the relay: The relay might be labeled "Fuel Pump" or have a number corresponding to the fuel pump circuit in your owner's manual. Sometimes a diagram on the fuse box cover will help.
3. Remove the relay: Gently pull the relay straight out of its socket.
4. Inspect the relay (optional): Visually check the relay for any signs of damage, such as burn marks or loose connections. You *can* try swapping it with another relay of the same type (in a less critical circuit) to see if that resolves the starting issue—if it does, the original relay is bad. However, this is a diagnostic test, not a permanent solution.
5. Replace the relay (if necessary): Buy a new fuel pump relay that's the same amperage and type as the original (again, your owner's manual or a parts store can help). Insert the new relay firmly into the socket.
If replacing the relay doesn't solve the problem, you'll need further diagnostics to pinpoint the cause of your no-start condition. Ignoring blown fuses or damaged wiring could lead to more serious problems. Consider taking your car to a qualified mechanic if you're uncomfortable troubleshooting electrical issues.
