my Ford Explorer Fifth Generation (2011-2019) has a check engine light and is running rough, what co...

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

583 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

Diagnose and fix engine roughness and check engine light on Ford Explorer (2011-2019). Step-by-step guide with 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 engine to cool before opening any components.

Symptoms

•Check engine light illuminated
•Rough idle
•Loss of power during acceleration
•Increased fuel consumption
•Engine stalling intermittently

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check for any visible vacuum leaks in the intake system or around the throttle body.
3
Inspect the spark plugs for wear or fouling and test the ignition coils.
4
Test fuel pressure to ensure the fuel pump is supplying adequate pressure.
5
Check the air filter for blockage and inspect the mass air flow (MAF) sensor for cleanliness.
6
Examine exhaust for any signs of blockage or backpressure issues.

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
•Line disconnect tool
•MAF sensor cleaner

Parts Required

•Spark plugs
•Fuel filter
•MAF sensor cleaner

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check for any visible vacuum leaks in the intake system or around the throttle body.
3
Inspect the spark plugs for wear or fouling and test the ignition coils.
4
Test fuel pressure to ensure the fuel pump is supplying adequate pressure.
5
Check the air filter for blockage and inspect the mass air flow (MAF) sensor for cleanliness.
6
Examine exhaust for any signs of blockage or backpressure issues.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts.
Ensure the engine is cool before beginning work.

2. Address Fault Codes

Sub-step 1: Clear any existing trouble codes using the OBD-II scanner.
Sub-step 2: Reconnect the battery and start the engine to see if the check engine light returns.

3. Inspect and Replace Spark Plugs

Sub-step 1: Remove the engine cover (if applicable) using a socket set.
Sub-step 2: Remove the spark plug wires or ignition coils.
Sub-step 3: Use a spark plug socket to remove and inspect each spark plug. Replace if necessary.
Sub-step 4: Reinstall new spark plugs to the manufacturer's torque specifications (typically around 13-15 lb-ft).

4. Check and Replace Fuel Filter

Sub-step 1: Locate the fuel filter and relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
Sub-step 2: Disconnect the fuel lines carefully using a line disconnect tool.
Sub-step 3: Remove the old fuel filter and install the new one, ensuring proper orientation.
Sub-step 4: Reconnect fuel lines and replace the fuel pump fuse.

5. Clean the MAF Sensor

Sub-step 1: Locate the MAF sensor in the intake ducting.
Sub-step 2: Disconnect the electrical connector and carefully remove the sensor.
Sub-step 3: Spray MAF sensor cleaner on the sensor element and let it dry.
Sub-step 4: Reinstall the MAF sensor and reconnect the electrical connector.

6. Final Checks

Sub-step 1: Inspect all vacuum lines and connections for leaks and repair as needed.
Sub-step 2: Ensure all components are reassembled correctly and securely.
Sub-step 3: Perform a final inspection for any loose connections or tools left in the engine bay.