how to fix a rough running Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

621 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 rough running issues in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before performing any maintenance.

Symptoms

•Engine misfire during idle or acceleration
•Check engine light illuminated
•Decreased fuel efficiency
•Rough idle or shaking when the vehicle is stopped
•Poor acceleration and loss of power
•Unusual engine noises, such as knocking or pinging

Diagnostic Steps

1
Scan the vehicle’s onboard diagnostic system using an OBD-II scanner to retrieve any error codes.
2
Inspect the spark plugs for wear or fouling; replace if necessary.
3
Check ignition coils for proper operation using a multimeter.
4
Inspect fuel injectors for clogs or leaks by performing a visual inspection and a flow test if needed.
5
Verify air intake system for leaks, especially around the intake manifold and vacuum hoses.
6
Conduct a compression test on the engine cylinders to assess engine health.

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
•Torque wrench
•Multimeter
•Vacuum gauge
•Fuel injector cleaning kit

Parts Required

•Spark plugs
•Ignition coils
•Fuel injectors (if necessary)
•Vacuum hoses (if necessary)

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Diagnostic Steps

1
Scan the vehicle’s onboard diagnostic system using an OBD-II scanner to retrieve any error codes.
2
Inspect the spark plugs for wear or fouling; replace if necessary.
3
Check ignition coils for proper operation using a multimeter.
4
Inspect fuel injectors for clogs or leaks by performing a visual inspection and a flow test if needed.
5
Verify air intake system for leaks, especially around the intake manifold and vacuum hoses.
6
Conduct a compression test on the engine cylinders to assess engine health.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent electrical shorts.
Gather necessary tools and parts.

2. Replace Spark Plugs

Tools Required: Socket set, spark plug socket, torque wrench
Remove the engine cover if applicable.
Use the spark plug socket to unscrew and remove the old spark plugs.
Inspect the threads of the spark plug holes for debris.
Install the new spark plugs by hand to avoid cross-threading, then torque to manufacturer specifications (typically around 13-15 ft-lbs).
Reinstall the engine cover.

3. Inspect and Replace Ignition Coils

Tools Required: Socket set, torque wrench
Remove the ignition coil connectors.
Unscrew the bolts securing the ignition coils and remove them.
Replace with new ignition coils and torque the bolts to manufacturer specifications.
Reconnect the ignition coil connectors.

4. Clean or Replace Fuel Injectors

Tools Required: Fuel injector cleaning kit or replacement injectors, safety goggles
Disconnect the fuel supply line and the electrical connectors from the fuel injectors.
Remove the injectors from the fuel rail.
If cleaning, use the fuel injector cleaning kit as per the instructions. If replacing, install new injectors and ensure they are seated correctly.
Reconnect all fuel lines and electrical connectors.

5. Check for Vacuum Leaks

Tools Required: Vacuum gauge, hose clamps
Inspect all vacuum hoses and intake manifold gaskets for cracks or disconnections.
Replace any damaged hoses and ensure all connections are secure.
If vacuum leaks are detected, consider using a smoke machine for a more thorough inspection.