how to fix a faulty ignition coil on Ford Explorer Sixth Generation (2020-present)

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

508 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix a faulty ignition coil in Ford Explorer (2020-present). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Engine

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow engine components to cool before handling to avoid burns.

Symptoms

•Check engine light illuminated
•Engine misfires during acceleration
•Rough idle when stationary
•Poor fuel economy
•Increased emissions
•Engine stalling at low speeds

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific ignition coil issues.
2
Inspect the ignition coil visually for physical damage or corrosion.
3
Test the ignition coil's primary and secondary resistance with a multimeter.
4
Check the wiring and connectors for continuity and secure connections.
5
Swap the suspected faulty coil with a functioning coil from another cylinder to see if the misfire follows the coil.
6
Inspect the spark plugs for wear or damage as they can contribute to ignition coil failure.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Socket set
•Multimeter
•Torque wrench
•Basic hand tools (screwdrivers, pliers)

Parts Required

•Replacement ignition coil
•Spark plugs (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific ignition coil issues.
2
Inspect the ignition coil visually for physical damage or corrosion.
3
Test the ignition coil's primary and secondary resistance with a multimeter.
4
Check the wiring and connectors for continuity and secure connections.
5
Swap the suspected faulty coil with a functioning coil from another cylinder to see if the misfire follows the coil.
6
Inspect the spark plugs for wear or damage as they can contribute to ignition coil failure.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shock.
Allow the engine to cool down before starting work.

2. Remove the Ignition Coil

Locate the ignition coil on the engine (refer to the service manual for specific location).
Remove any engine covers or components obstructing access to the ignition coil.
Disconnect the electrical connector from the ignition coil by pressing the release tab and pulling it off.
Remove the bolt(s) securing the ignition coil using a socket wrench.
Carefully pull the ignition coil out of the spark plug well.

3. Inspect and Replace

Inspect the ignition coil for cracks or damage; if faulty, proceed with replacement.
If required, remove and inspect the spark plug for wear; replace if necessary.
Install the new ignition coil by aligning it with the spark plug and pushing it into place.
Secure the ignition coil with the bolt(s) removed earlier and tighten to manufacturer's specifications (usually around 10-15 ft-lbs).
Reconnect the electrical connector ensuring it clicks into place.

4. Reassemble and Test

Reinstall any engine covers or components previously removed.
Reconnect the negative battery terminal.
Start the engine to verify proper operation of the new ignition coil.