Tools You'll Likely Need:
* Socket set (metric): Various sizes, likely including 10mm, 13mm, 14mm, and possibly others.
* Wrench set (metric): For anything the sockets can't reach.
* Screwdrivers: Phillips and flathead, various sizes.
* Pliers: Needle-nose and regular.
* Ratchet and extensions: To reach bolts in tight spots.
* Jack and jack stands: Essential for safety.
* Wheel chocks: To prevent the car from rolling.
* Shop towels or rags: To keep things clean.
* Penetrating oil (like PB Blaster): To help loosen rusted bolts.
Steps:
1. Safety First: Park the car on a level surface, engage the parking brake, and use wheel chocks. Disconnect the negative battery terminal. Raise the vehicle using a jack and securely support it on jack stands.
2. Remove Seat Components:
* Seatbelts: Disconnect the seatbelt retractors from the seat. This usually involves removing a bolt or two from the seatbelt buckle assembly and then unplugging the electrical connector (if any).
* Electrical Connections: Unplug any electrical connectors for seat heaters, power adjustments, or airbags (if equipped). Be careful to label wires if you need to disconnect many. Airbag deployment can cause serious injury. If you're unsure about disconnecting airbags, consult a professional.
* Bolts and Fasteners: Locate and remove all bolts securing the seat to the floor. These are usually located under the seat and near the seat tracks. Use penetrating oil if bolts are stuck.
3. Remove the Seat: Carefully lift the seat out of the vehicle. It may be heavy, so get assistance if needed.
4. Install the New Seat:
* Seat Preparation: If transferring components (like heaters or power adjusters) from the old seat to the new one, carefully mark and document the wiring and connections before disconnecting. This is crucial to prevent incorrect reassembly.
* Positioning: Carefully position the new seat in place, ensuring the tracks align correctly.
* Secure the Seat: Reinstall all bolts and fasteners securely, tightening them to the manufacturer's specifications.
5. Reconnect Components: Reconnect the seatbelts, electrical connectors, and any other components removed in step 2.
6. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
7. Test Everything: Test the seat's functionality (adjustments, heaters, etc.), seatbelts, and any electrical components. Ensure everything operates correctly.
Important Considerations:
* Airbags: If your Marquis has airbags integrated into the seat, it's strongly recommended you have a professional mechanic handle the replacement. Improper handling of airbags is extremely dangerous.
* Seat Track Adjustment: Pay close attention to how the seat tracks are adjusted and reconnected. Misalignment can lead to difficulties in adjusting the seat position.
* Repair Manual: Again, a repair manual specific to your 1993 Mercury Marquis is invaluable. It will provide detailed diagrams and precise instructions.
This guide provides a general overview. Specific steps and bolt locations will vary depending on your Marquis's exact model and options. If you lack experience with automotive repair, consider seeking professional assistance. The job is manageable for someone with some mechanical skill but can be frustrating without the proper guidance and tools.
