what should I check if my Ford Explorer has a strong exhaust smell inside?

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

572 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 strong exhaust smell inside Ford Explorer. Step-by-step guide with diagnostic procedures 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 components.
•Allow the engine to cool before inspecting the exhaust system to prevent burns.

Symptoms

•Strong exhaust odor inside the vehicle cabin
•Possible check engine light illuminated
•Reduced fuel efficiency
•Engine misfires or rough running
•Increased engine temperature
•Foul smell from the engine bay

Diagnostic Steps

1
Inspect the exhaust system for visible leaks, especially at joints and connections.
2
Check for any loose or damaged exhaust components, including the muffler and catalytic converter.
3
Scan the vehicle's OBD-II system for error codes.
4
Inspect the engine compartment for signs of oil or fuel leaks.
5
Examine the cabin air filter for contamination or improper installation.
6
Test for exhaust gases entering the cabin by checking the door seals and firewall for leaks.

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
•Exhaust repair tape or sealant
•Screwdrivers

Parts Required

•Exhaust gaskets
•Muffler or exhaust pipe (if damaged)
•Cabin air filter

Related Faults

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Diagnostic Steps

1
Inspect the exhaust system for visible leaks, especially at joints and connections.
2
Check for any loose or damaged exhaust components, including the muffler and catalytic converter.
3
Scan the vehicle's OBD-II system for error codes.
4
Inspect the engine compartment for signs of oil or fuel leaks.
5
Examine the cabin air filter for contamination or improper installation.
6
Test for exhaust gases entering the cabin by checking the door seals and firewall for leaks.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to ensure safety while working on the vehicle.

2. Inspect and Repair Exhaust System

Visual Inspection
- Use a flashlight to inspect the exhaust system from the engine to the tailpipe.
- Look for cracks, holes, and rust in the exhaust pipes, muffler, and catalytic converter.
Seal Leaks
- If leaks are found, use exhaust repair tape or sealant to temporarily seal small holes.
- For larger holes or damaged components, remove the affected part and replace it with a new one.
Check Mounts and Gaskets
- Inspect exhaust hangers and mounts; replace any that are worn or broken.
- Replace any gaskets that are damaged to ensure a proper fit.

3. Address Engine Issues

Check Engine Components
- Inspect spark plugs and ignition coils for wear or damage; replace as necessary.
- Check fuel injectors for proper operation and clean or replace them if needed.
Inspect Air Intake System
- Ensure that the air filter is clean and replace it if dirty.
- Inspect intake hoses and connections for leaks.

4. Cabin Air Quality

Replace Cabin Air Filter
- Remove the old cabin air filter and install a new one to improve air quality inside the vehicle.
Test Seals
- Inspect door seals and the firewall for any gaps or damage that may allow exhaust gases to enter the cabin.