how to fix the catalytic converter issue in Ford Explorer Sixth Generation (2020-present)

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

538 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 catalytic converter issues in Ford Explorer (2020-present). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Exhaust System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the exhaust system to cool before handling components.

Symptoms

•Check engine light illuminated
•Decreased acceleration or power loss
•Unusual exhaust odors (e.g., sulfur smell)
•Engine stalling or rough idling
•Increased fuel consumption
•Excessive exhaust smoke

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific catalytic converter-related faults.
2
Inspect the exhaust system visually for any obvious signs of damage or leaks.
3
Check the temperature of the catalytic converter inlet and outlet using an infrared thermometer to assess its efficiency.
4
Measure the back pressure in the exhaust system with a pressure gauge to determine if it is within specifications.
5
Inspect upstream components like oxygen sensors for proper function and connectivity.

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
•Pressure gauge
•Infrared thermometer
•Jack and jack stands

Parts Required

•New catalytic converter
•Exhaust gaskets (if needed)
•Oxygen sensor (if faulty)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific catalytic converter-related faults.
2
Inspect the exhaust system visually for any obvious signs of damage or leaks.
3
Check the temperature of the catalytic converter inlet and outlet using an infrared thermometer to assess its efficiency.
4
Measure the back pressure in the exhaust system with a pressure gauge to determine if it is within specifications.
5
Inspect upstream components like oxygen sensors for proper function and connectivity.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to prevent electrical shorts.
Raise the vehicle securely on jack stands.

2. Remove Exhaust Components

Sub-step 2.1: Remove the heat shield (if applicable) by unscrewing it from the mounting points.
Sub-step 2.2: Unbolt the exhaust flange connections at both the upstream and downstream of the catalytic converter using a socket set.
Sub-step 2.3: Carefully detach any hangers or brackets holding the exhaust system in place.

3. Inspect and Replace Catalytic Converter

Sub-step 3.1: Remove the catalytic converter from the exhaust system by carefully pulling it out.
Sub-step 3.2: Inspect the old catalytic converter for any physical damage or excessive buildup.
Sub-step 3.3: Install the new catalytic converter, ensuring proper alignment with the exhaust system.

4. Reassemble Exhaust System

Sub-step 4.1: Reattach the exhaust flange connections and torque them to the manufacturer’s specifications (typically around 30-40 lb-ft).
Sub-step 4.2: Reinstall the heat shield if it was removed.
Sub-step 4.3: Reattach any hangers or brackets to secure the exhaust system.

5. Final Checks

Sub-step 5.1: Reconnect the battery and clear any error codes using the OBD-II scanner.
Sub-step 5.2: Start the engine and listen for any exhaust leaks.
Sub-step 5.3: Monitor the exhaust system for leaks and check the check engine light status.