* Under the hood in the fuse box: This is the most common location. The fuse box itself is usually located either near the battery or on the passenger side fender well. Open the fuse box cover and look for a diagram showing the relay locations. The relay might be labeled "FUEL PUMP" or have a similar designation.
* Under the dash: Less common, but possible. Check the area around the fuse box under the dash; sometimes additional relays are mounted nearby.
To find it definitively:
1. Consult your owner's manual: This is your best bet. The manual should have a diagram showing the location of all relays and fuses.
2. Check the fuse box diagram: The inside cover of the underhood fuse box usually has a diagram identifying each component. Look for a relay symbol that's labelled "Fuel Pump," "EFI," or something similar.
3. Use a wiring diagram: A wiring diagram specific to your 1988 Cavalier Z24 will show the exact location and path of the fuel pump relay circuit. You can often find these online through automotive repair resources or websites specializing in car repair manuals.
Important Note: Before working with electrical components, always disconnect the negative battery terminal to prevent short circuits or damage.
