my Ford Explorer Fifth Generation (2011-2019) has an unusual smell when I drive

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

547 words

Problem Statement

Learn how to diagnose and fix unusual smells in your Ford Explorer Fifth Generation. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool before opening the hood to prevent burns
•Disconnect the battery if working on electrical components

Symptoms

•Unpleasant odor emanating from the cabin or engine bay
•Possible smoke or vapor visible from the engine compartment
•Increase in cabin humidity or fogging of windows
•Overheating warning on the dashboard
•Decrease in engine performance or acceleration

Diagnostic Steps

1
Inspect the engine bay for any signs of leaks (oil, coolant, or fuel)
2
Check cabin air filter for debris or contamination
3
Use an OBD-II scanner to check for any stored trouble codes
4
Inspect exhaust system for leaks or damage
5
Examine the condition of belts and hoses for wear or burning
6
Assess the AC system for refrigerant leaks or malfunction

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
•Flashlight
•Screwdriver set
•Wrench set
•AC recharge kit

Parts Required

•Cabin air filter
•Exhaust clamps or pipes (if necessary)
•Refrigerant (if AC is low)

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Diagnostic Steps

1
Inspect the engine bay for any signs of leaks (oil, coolant, or fuel)
2
Check cabin air filter for debris or contamination
3
Use an OBD-II scanner to check for any stored trouble codes
4
Inspect exhaust system for leaks or damage
5
Examine the condition of belts and hoses for wear or burning
6
Assess the AC system for refrigerant leaks or malfunction

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Wear safety gloves and goggles.

2. Inspect Engine and Components

Sub-steps:
- Open the hood and visually inspect for any fluid leaks.
- Check for burnt oil or coolant on engine components.
- Look for any signs of smoke or discoloration around belts and hoses.
Tools Required: Flashlight, rags for cleanup.

3. Clean or Replace Cabin Air Filter

Sub-steps:
- Locate the cabin air filter (usually behind the glove box).
- Remove the glove box to access the filter compartment.
- Remove the old filter and inspect for dirt or debris.
- Install a new filter (ensure it is oriented correctly).
Tools Required: Screwdriver (if needed), new cabin air filter.

4. Check and Repair Exhaust System

Sub-steps:
- Inspect the exhaust pipes and connections for any visible leaks or rust.
- If a leak is found, tighten any loose clamps or replace damaged sections.
- Ensure the catalytic converter is functioning properly.
Tools Required: Wrench set, exhaust tape (for minor repairs).

5. Verify AC System Functionality

Sub-steps:
- Check if the AC is blowing cold air; if not, inspect for refrigerant leaks.
- If low on refrigerant, recharge the system using the appropriate type.
- Inspect AC compressor and hoses for damage.
Tools Required: AC recharge kit, manifold gauge set.