Tools You'll Likely Need:
* Socket set (various sizes)
* Ratchet and extensions
* Pliers (needle-nose and regular)
* Screwdrivers (Phillips and flathead)
* New speedometer cable (ensure you get the correct one for your model)
* Jack and jack stands (essential for safety)
* Wheel chocks
* Penetrating oil (like PB Blaster)
* Grease (for the new cable)
Procedure:
1. Safety First: Park your vehicle on a level surface, engage the parking brake, and chock the wheels. Use jack stands to safely lift the vehicle. Never work under a vehicle supported only by a jack.
2. Access the Transmission: You'll need to access the transmission where the speedometer cable connects. This usually involves working under the car. The location might vary slightly depending on the transmission type (automatic or manual).
3. Disconnect the Speedometer Cable:
* At the Transmission: Locate the speedometer cable connector at the transmission. Often, there's a retaining clip or nut that needs to be loosened or removed to detach the cable from the transmission. Penetrating oil might be necessary to loosen a stubborn connection.
* At the Instrument Cluster: This is usually located inside the vehicle, behind the instrument panel. You may need to remove the instrument cluster bezel (the plastic trim around the gauges) to access the cable connection. This usually involves removing screws.
4. Remove the Old Cable: Once the cable is disconnected at both ends, carefully pull it out. It might be stiff or stuck; gently work it free. Take note of the cable routing as you remove it – you'll need to retrace this path during installation.
5. Install the New Cable:
* Lubrication: Lightly grease the new cable. This will help it move freely and prevent premature wear.
* Routing: Carefully feed the new cable through the same path as the old one, ensuring it's properly routed and doesn't get caught or pinched. This step can be the most challenging.
* Connect the Cable: Connect the new cable to both the transmission and the instrument cluster, ensuring secure connections. Tighten any nuts or clips to the manufacturer's specifications (consult your repair manual).
6. Reassemble: Reinstall the instrument cluster bezel (if removed) and any other components you disconnected to access the cable.
7. Test: Lower the vehicle and test the speedometer. Start the car and drive at various speeds to ensure the speedometer is functioning correctly.
Important Considerations:
* Repair Manual: This is crucial. A Haynes or Chilton repair manual specific to your 1988 Ford Tempo will provide detailed diagrams and instructions, making the process much easier and safer.
* Cable Type: Ensure you purchase the correct speedometer cable for your 1988 Ford Tempo. There might be slight variations depending on the engine and transmission.
* Patience: This is not a quick job. Be patient and methodical, especially when routing the new cable.
If you're not comfortable performing this repair yourself, it's best to take your car to a qualified mechanic. Improper installation can lead to further damage.
