Tools You'll Need:
* New spark plug wires: Make sure you get the correct wires for your specific year and engine. Using the wrong ones can lead to misfires and damage.
* Socket wrench set: You might need various sizes depending on your specific year and model.
* Pliers (needle-nose are helpful): For gripping and manipulating the wire connectors.
* Wrench or socket (for coil pack bolts, if applicable): Depending on the year, you might need to remove the coil pack to access the spark plugs and wires.
* Shop rags or paper towels: To keep things clean and prevent grease from getting on the wires.
* Diagram or picture of the correct firing order: This is crucial to ensure the wires are connected correctly. This information can usually be found in your owner's manual or online. Getting the firing order wrong can cause serious engine problems.
* Optional: Wire routing diagram: Some repair manuals provide diagrams showing the optimal routing of the wires.
Steps:
1. Safety First: Disconnect the negative battery terminal. This prevents accidental shorts and shocks.
2. Locate the Spark Plugs and Wires: The spark plugs are typically located on the top of the engine, under the valve cover. The wires connect to the spark plugs and, depending on the year, either directly to the ignition coil or to a coil pack.
3. Identify the Firing Order: Find the correct firing order for your specific engine (usually found in your owner's manual or online). This is essential for proper engine operation.
4. Disconnect the Old Wires: Carefully disconnect the wires from the spark plugs and the ignition coil or coil pack. Use needle-nose pliers if needed to get a good grip on the connectors. Take note of which wire goes where. A picture or labelled diagram would be extremely helpful here.
5. Remove the Coil Pack (If Necessary): On some Duratec 24V engines, the ignition coil is integrated into a coil pack that needs to be removed to access the spark plugs and wires. Consult your repair manual for the specific procedure. Usually involves removing a few bolts.
6. Install the New Wires:
* Route the wires carefully: Try to follow the original routing of the wires as closely as possible to avoid interference and ensure proper heat dissipation.
* Connect the wires: Connect the new wires to the spark plugs, ensuring a secure connection. Then connect the other end of the wires to the ignition coil or coil pack, again making sure each wire goes to the correct location based on the firing order.
7. Reinstall the Coil Pack (If Necessary): If you removed the coil pack, carefully reinstall it, making sure the bolts are tightened securely.
8. Reconnect the Battery: Reconnect the negative battery terminal.
9. Start the Engine: Start the engine and listen for any misfires. If you hear any unusual noises or the engine runs roughly, double-check the wiring to make sure everything is connected correctly to the correct spark plug in the correct firing order.
Important Considerations:
* Consult a Repair Manual: A repair manual specific to your year and model of Ford Taurus/Sable is highly recommended. It will provide detailed diagrams and instructions.
* Firing Order is Critical: Getting the firing order wrong can lead to engine damage. Double and triple check this before starting the engine.
* Wire Routing: Properly routing the wires helps prevent interference and ensures long wire life. Avoid sharp bends and keep them away from hot engine parts.
* Tight Connections: Ensure all connections are secure. Loose connections can cause misfires.
If you're not comfortable working on your car yourself, it's always best to take it to a qualified mechanic. This is a relatively involved job, and getting it wrong can have serious consequences.
