how to fix rough running in Ford Explorer Sixth Generation (2020-present)

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

618 words

Problem Statement

Learn how to diagnose and fix rough running issues in the Ford Explorer (2020-present). 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 completely before working on any components.

Symptoms

•Rough idle when the vehicle is stationary
•Engine stalling during acceleration or at stops
•Decreased fuel efficiency
•Check engine light illuminated on the dashboard
•Unusual engine noises, such as knocking or misfiring

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the air intake system for blockages or leaks that could affect airflow.
3
Check the fuel system pressure with a fuel pressure gauge to ensure it is within specifications.
4
Examine spark plugs and ignition coils for wear or damage.
5
Inspect the throttle body for carbon buildup and ensure it operates smoothly.
6
Check for vacuum leaks in hoses and gaskets around the intake manifold.

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
•Fuel pressure gauge
•Multimeter
•Cleaning spray for throttle body

Parts Required

•Spark plugs (if replacement is needed)
•Fuel filter (if replacement is needed)
•Vacuum hoses (if damaged)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the air intake system for blockages or leaks that could affect airflow.
3
Check the fuel system pressure with a fuel pressure gauge to ensure it is within specifications.
4
Examine spark plugs and ignition coils for wear or damage.
5
Inspect the throttle body for carbon buildup and ensure it operates smoothly.
6
Check for vacuum leaks in hoses and gaskets around the intake manifold.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, torque wrench, fuel pressure gauge, multimeter, cleaning spray for throttle body.
Ensure the vehicle is parked on a flat surface and the engine is cool. Disconnect the battery to avoid electrical shorts.

2. Check and Replace Spark Plugs

Remove the engine cover if applicable.
Using a socket set, carefully remove the spark plug wires or ignition coils.
Take out the spark plugs using a spark plug socket.
Inspect the spark plugs for wear. If they are fouled or worn, replace them with new plugs that meet OEM specifications.
Reinstall the spark plugs and ignition coils or spark plug wires, ensuring they are properly seated and torqued to the manufacturer’s specifications.

3. Clean Throttle Body

Locate the throttle body and remove the intake duct.
Use a cleaning spray specifically designed for throttle bodies and a soft cloth to clean the throttle plate and interior surfaces.
Ensure not to leave any residue behind.
Reattach the intake duct securely.

4. Inspect and Repair Fuel System

Connect the fuel pressure gauge to the fuel rail.
Turn the ignition to the "on" position (do not start the engine) and check the fuel pressure reading against the manufacturer’s specifications.
If the pressure is low, check the fuel filter and replace it if it’s clogged. If the filter is fine, inspect the fuel pump for proper operation.
Reconnect any fuel lines securely after inspection.

5. Address Vacuum Leaks

Visually inspect all vacuum hoses for cracks or disconnections.
Use a smoke machine to introduce smoke into the intake system to detect leaks if necessary.
Replace any damaged hoses or gaskets identified during the inspection.