Where is the fan relay switch for a 1989 Oldsmobile Cutlass Ciera with 2.8 engine located?

The fan relay for a 1989 Oldsmobile Cutlass Ciera with a 2.8L engine is typically located in the underhood fuse box, also known as the Power Distribution Center (PDC). However, there's no single definitive answer. Some models might have it in a different location, like near the radiator or even within the fuse box itself but in a less obvious spot.

To find it, you'll need to:

1. Consult your owner's manual: This is the best place to start. The manual should have a diagram showing the location of all relays and fuses.

2. Locate the underhood fuse box: It's usually a plastic box under the hood, often near the battery.

3. Examine the fuse box diagram: The diagram should clearly label the fan relay, usually indicated as "cooling fan" or similar. Look for a relay with the correct amperage rating (you may need to refer to your manual to determine this).

4. Visually inspect relays: If the diagram isn't clear, you might have to check each relay, often looking for one with wires that could possibly go to the cooling fan system. Be cautious not to disturb anything unnecessarily.

5. If you still can't find it: A qualified mechanic or an Oldsmobile-specific forum may be able to provide more precise information for your specific vehicle's configuration.

Remember to always disconnect the negative battery terminal before working on electrical components in your vehicle.