why does my Ford Explorer Fifth Generation (2011-2019) have a knocking noise

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

616 words

Problem Statement

Learn how to diagnose and fix knocking noise in Ford Explorer Fifth Generation (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

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening the oil drain plug or performing any maintenance.

Symptoms

•Knocking or tapping noise from the engine compartment
•Noise increases with engine RPM
•Loss of power or acceleration issues
•Check engine light illuminated
•Abnormal vibrations felt through the vehicle
•Engine misfire or rough idle

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the engine oil level and condition; low or dirty oil can cause knocking.
3
Check for loose or damaged components, such as the exhaust heat shield or engine mounts.
4
Listen closely for the source of the knocking noise, using a stethoscope if available.
5
Inspect the timing chain/belt for wear or damage, as a faulty timing component can create noise.
6
Check for worn or damaged spark plugs and ignition components that may cause misfires.

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
•Oil filter wrench
•Torque wrench
•Engine stethoscope (optional)

Parts Required

•Engine oil
•Oil filter
•Timing chain/belt (if worn)
•Engine mounts (if damaged)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the engine oil level and condition; low or dirty oil can cause knocking.
3
Check for loose or damaged components, such as the exhaust heat shield or engine mounts.
4
Listen closely for the source of the knocking noise, using a stethoscope if available.
5
Inspect the timing chain/belt for wear or damage, as a faulty timing component can create noise.
6
Check for worn or damaged spark plugs and ignition components that may cause misfires.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface, and engage the parking brake.
Disconnect the battery to avoid electrical shorts.

2. Oil Change (if oil is low or dirty)

Drain Old Oil
- Place a drain pan under the oil pan.
- Remove the oil drain plug using a socket set and allow oil to drain completely.
- Reinstall the drain plug and tighten to the manufacturer's torque specification (typically around 20-25 ft-lbs).
Replace Oil Filter
- Remove the old oil filter using an oil filter wrench.
- Apply a thin layer of clean oil to the rubber gasket of the new filter.
- Install the new filter and tighten according to manufacturer specifications (usually hand-tight plus 3/4 turn).
Add New Oil
- Fill the engine with the appropriate type and amount of oil (typically 5W-20 or 5W-30, check the owner's manual).
- Start the engine and check for leaks around the drain plug and oil filter.

3. Inspect Timing Chain/Belt

Remove Engine Covers
- Use a socket set to remove any engine covers obstructing access to the timing components.
Check for Wear
- Look for signs of wear or slack in the timing chain/belt.
- Rotate the engine manually to observe the timing marks.
Replace if Necessary
- If the timing component shows signs of wear, replace it according to the manufacturer’s service schedule.

4. Inspect Exhaust Components

Check Heat Shields
- Inspect the exhaust heat shields for looseness or damage.
- Tighten any loose bolts or replace damaged heat shields.
Check Engine Mounts
- Inspect engine mounts for signs of wear or failure.
- Replace any damaged mounts to reduce vibrations.