why does my Ford Explorer have a strange smell while driving

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

524 words

Problem Statement

Discover how to diagnose and fix strange smells while driving in your Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

HVAC

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool before working on it
•Wear gloves to protect hands

Symptoms

•Unpleasant odor inside the cabin
•Burning smell from the engine bay
•Sweet smell resembling coolant
•Exhaust smell inside the vehicle
•Musty odor indicating possible mold or mildew

Diagnostic Steps

1
Inspect for coolant leaks by checking the coolant reservoir and hoses for leaks or cracks
2
Examine engine oil for burnt oil or signs of oil leaks on the engine
3
Check cabin air filter for dirt and mold
4
Inspect exhaust system for leaks or damaged components
5
Identify the location of the smell by sniffing around the engine compartment and cabin areas
6
Use an OBD-II scanner to check for any related engine codes

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

•Socket set
•Screwdrivers
•OBD-II scanner
•Gloves

Parts Required

•Cabin air filter
•Coolant
•Exhaust components

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Diagnostic Steps

1
Inspect for coolant leaks by checking the coolant reservoir and hoses for leaks or cracks
2
Examine engine oil for burnt oil or signs of oil leaks on the engine
3
Check cabin air filter for dirt and mold
4
Inspect exhaust system for leaks or damaged components
5
Identify the location of the smell by sniffing around the engine compartment and cabin areas
6
Use an OBD-II scanner to check for any related engine codes

Solution

1. Preparation

Tools Required: Socket set, screwdrivers, OBD-II scanner, gloves.
Safety Warnings: Allow the engine to cool before working on it; wear gloves to protect hands.

2. Inspect Coolant System

Sub-steps:
1. Open the hood and visually inspect the coolant reservoir for any signs of leaks.
2. Check all hoses leading to and from the radiator for cracks or wear.
3. If leaks are found, replace damaged hoses and top off coolant with the appropriate type (usually a 50/50 mix of antifreeze and water).

3. Check and Replace Cabin Air Filter

Sub-steps:
1. Locate the cabin air filter, typically found behind the glove box.
2. Remove the glove box to access the filter.
3. Take out the old filter and inspect it for dirt, mold, or blockages. Replace if necessary.
4. Install a new cabin air filter, ensuring it is seated correctly.

4. Inspect and Repair Exhaust System

Sub-steps:
1. Raise the vehicle securely on jack stands.
2. Visually inspect the exhaust system for holes, rust, or loose connections.
3. Tighten any loose bolts and replace damaged sections of the exhaust as required.

5. Clean Engine Bay

Sub-steps:
1. Spray engine degreaser in the engine bay to remove any oil build-up.
2. Rinse with water carefully, avoiding electrical components.
3. Inspect again for any leaks after cleaning.