my Ford Explorer Fifth Generation (2011-2019) has a strange smell coming from the engine, what is it...

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

483 words

Problem Statement

Learn how to diagnose and fix strange smells from the engine of a Ford Explorer (2011-2019). 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

•Allow the engine to cool completely before working on any components.
•Disconnect the battery before inspecting electrical systems.

Symptoms

•Unusual burning odor
•Sweet smell, possibly indicating coolant leak
•Chemical or acrid smell, suggesting oil burning
•Overheating engine temperature
•Visible smoke from the engine bay

Diagnostic Steps

1
Inspect for visible leaks around the engine and under the vehicle.
2
Check the coolant level in the reservoir and radiator for signs of low fluid.
3
Use an OBD-II scanner to check for any error codes related to engine performance.
4
Examine engine oil level and condition; look for signs of contamination or burning.
5
Inspect belts and hoses for any signs of wear, damage, or burning.
6
Check for any foreign objects or debris around the engine that might be causing the smell.

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
•Coolant catch basin
•OBD-II scanner
•Rags
•Torque wrench

Parts Required

•Replacement hoses (if necessary)
•Replacement oil filter (if necessary)
•Engine coolant (Ford Motorcraft Premium Green or equivalent)

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Diagnostic Steps

1
Inspect for visible leaks around the engine and under the vehicle.
2
Check the coolant level in the reservoir and radiator for signs of low fluid.
3
Use an OBD-II scanner to check for any error codes related to engine performance.
4
Examine engine oil level and condition; look for signs of contamination or burning.
5
Inspect belts and hoses for any signs of wear, damage, or burning.
6
Check for any foreign objects or debris around the engine that might be causing the smell.

Solution

1. Preparation

Tools Required: Socket set, screwdrivers, coolant catch basin, OBD-II scanner, rags.
Ensure the engine is cool before starting any work to avoid burns.
Disconnect the battery to prevent electrical issues during inspection.

2. Inspect and Repair Leaks

Coolant Leak:
1. If coolant is low, inspect hoses, water pump, and radiator for leaks.
2. Replace any damaged hoses or components as necessary.
3. Refill the cooling system with the appropriate coolant type (Ford Motorcraft Premium Green or equivalent).
Oil Leak:
1. If oil is found, check the oil filter and drain plug for tightness.
2. Replace the oil filter if it’s leaking, and ensure to use the correct oil type (5W-20 for most models).
3. Clean any spilled oil to prevent burning odors.

3. Replace Damaged Components

Check belts and hoses for wear; replace any that are cracked or frayed.
Use a torque wrench to ensure proper installation of new belts (follow manufacturer specifications).

4. Reassemble and Test

Reconnect the battery and ensure all components are securely reattached.
Start the engine and observe for any persistent smells or leaks.