why does my Ford Explorer make a loud noise when accelerating

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

540 words

Problem Statement

Learn how to diagnose and fix loud noise during acceleration in 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 systems.
•Allow the exhaust system to cool before inspecting or working on it.

Symptoms

•Loud noise increases with acceleration
•Possible vibration felt in the cabin
•Noise may be a rumbling, grinding, or hissing sound
•Decreased acceleration performance
•Possible check engine light illuminated

Diagnostic Steps

1
Inspect the exhaust system for leaks or damage, focusing on the muffler, catalytic converter, and exhaust pipes.
2
Check for loose or damaged heat shields that may vibrate during acceleration.
3
Use an OBD-II scanner to check for any stored error codes that may indicate engine or transmission issues.
4
Inspect the engine mounts for wear or damage that could lead to abnormal vibrations.
5
Listen for the noise while the vehicle is stationary and in gear to determine if the noise is engine-related or drivetrain-related.

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
•Pry bar
•Exhaust pipe clamp tool
•Wrench set
•Screwdriver set
•Torque wrench
•Jack stands

Parts Required

•Exhaust pipe or muffler (if damaged)
•Heat shield (if damaged)
•Engine mounts (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the exhaust system for leaks or damage, focusing on the muffler, catalytic converter, and exhaust pipes.
2
Check for loose or damaged heat shields that may vibrate during acceleration.
3
Use an OBD-II scanner to check for any stored error codes that may indicate engine or transmission issues.
4
Inspect the engine mounts for wear or damage that could lead to abnormal vibrations.
5
Listen for the noise while the vehicle is stationary and in gear to determine if the noise is engine-related or drivetrain-related.

Solution

1. Preparation

Gather tools and safety equipment.
Ensure the vehicle is parked on a flat surface.
Engage the parking brake.

2. Inspect and Repair Exhaust System

Tools Required: Socket set, pry bar, exhaust pipe clamp tool.
Sub-steps:
- Raise the vehicle using jack stands and secure it.
- Visually inspect the entire exhaust system for cracks, corrosion, or loose connections.
- If a leak is found, mark the area for repair or replacement.
- Tighten any loose bolts or clamps; replace damaged sections of the exhaust pipe or muffler as necessary.

3. Check and Repair Heat Shields

Tools Required: Wrench set, screwdriver set.
Sub-steps:
- Inspect the heat shields around the exhaust system for loose or damaged sections.
- Tighten any loose bolts.
- If a heat shield is damaged, remove it and replace it with a new shield.

4. Inspect and Replace Engine Mounts (if necessary)

Tools Required: Socket set, torque wrench.
Sub-steps:
- Check engine mounts for signs of cracking or excessive wear.
- If mounts are damaged, remove the old mounts.
- Install new engine mounts, ensuring proper alignment and torque specifications are followed.

5. Address Any Error Codes

Tools Required: OBD-II scanner.
Sub-steps:
- Clear any error codes after repairs are made.
- Test drive the vehicle to ensure the noise is resolved and no new codes appear.