- Gather the necessary tools and equipment. You will need:
- An ohmmeter or multimeter.
- A piece of wire.
- A jumper wire.
- A Phillips head screwdriver.
Step 2: Locate the coil on plugs
- Open the hood of your Lincoln LS.
- Locate the engine cover and remove it.
- The coils on plugs will be located on top of the engine, at the end of each spark plug.
Step 3: Test the coils
Disconnect each coil
>1. Check for primary resistance.
Using the ohmmeter or multimeter, check for resistance between the positive (+) and negative (-) terminals on the primary winding of the coil on plug using the ohmmeter or multimeter.
- The primary winding resistance should be between 0.5 and 2 ohms.
2. Check for secondary resistance.
- Connect the ohmmeter or multimeter leads between the positive terminal of the coil and the spark plug terminal. The secondary resistance should be between 5,000 to 25,000 ohms.
3. Check for continuity.
- Connect the jumper wire to the positive terminal on the coil and then touch it to the spark plug terminal. If there is continuity, the spark plug will spark.
Step 4: Replace the coil on plugs (if necessary)
If any of the coils on plugs fail the tests, they will need to be replaced. To replace a coil on plug, follow these steps:
- Remove the bolt that holds the coil on plug in place.
- Disconnect the electrical connector from the coil on plug.
- Pull the coil on plug straight up out of the spark plug well.
- Insert a new coil into the spark plug well and push it down until it is seated firmly.
- Connect the electrical connector to the coil on plug.
- Insert bolt and tighten
Step 5: Test the engine.
Once you have replaced the coil on plugs, start the engine and let it run for a few minutes. Check for any misfires or other problems. If the engine is running smoothly, the coil on plugs have been replaced successfully.
