why does my Ford Explorer make a loud noise when I accelerate?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

505 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 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 engine to cool before inspecting the exhaust system.

Symptoms

•Loud noise that increases with acceleration
•Possible vibration felt through the vehicle
•Whining or grinding noise when shifting gears
•Decreased acceleration performance
•Possible exhaust odor inside the cabin

Diagnostic Steps

1
Inspect the exhaust system for leaks or damage, particularly at joints and connections.
2
Check fluid levels in the transmission and differential for proper levels and condition.
3
Listen for the source of the noise while accelerating in a safe location.
4
Inspect the drivetrain components, including the driveshaft and CV joints for wear or damage.
5
Use a stethoscope or similar tool to pinpoint the noise source under the hood.
6
Scan for any diagnostic trouble codes (DTCs) using an OBD-II scanner.

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
•Mechanic's creeper
•Fluid pump
•Jack stands
•Safety goggles

Parts Required

•Replacement exhaust components (if damaged)
•Transmission fluid
•Differential fluid

Related Faults

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Diagnostic Steps

1
Inspect the exhaust system for leaks or damage, particularly at joints and connections.
2
Check fluid levels in the transmission and differential for proper levels and condition.
3
Listen for the source of the noise while accelerating in a safe location.
4
Inspect the drivetrain components, including the driveshaft and CV joints for wear or damage.
5
Use a stethoscope or similar tool to pinpoint the noise source under the hood.
6
Scan for any diagnostic trouble codes (DTCs) using an OBD-II scanner.

Solution

1. Preparation

Gather tools and safety equipment.
Ensure the vehicle is parked on a level surface and the engine is cool.

2. Inspect Exhaust System

Tools Required: Socket set, jack stands, and safety goggles.
Sub-steps:
1. Raise the vehicle using a jack and secure it on jack stands.
2. Visually inspect the exhaust pipes, mufflers, and catalytic converter for any signs of rust, holes, or damage.
3. If leaks are found, mark the areas for repair or replacement.

3. Check Drivetrain Components

Tools Required: Torque wrench and mechanic's creeper.
Sub-steps:
1. Inspect the driveshaft for any signs of wear or play.
2. Examine CV joints for cracks or torn boots.
3. If issues are found, replace the affected components.

4. Fluid Inspection and Replacement

Tools Required: Fluid pump, torque wrench, and container for old fluid.
Sub-steps:
1. Check transmission fluid level and condition. If it’s low or dirty, drain and replace with the manufacturer-recommended fluid.
2. Repeat for differential fluid, ensuring to check for metal shavings which may indicate internal wear.

5. Reassemble and Test

If any components were removed or adjusted, ensure they are properly reassembled.
Lower the vehicle back to the ground and start the engine.
Take the vehicle for a test drive to confirm the noise has been resolved.