what causes my Ford Explorer Fifth Generation (2011-2019) to have a knocking noise?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

494 words

Problem Statement

Learn how to diagnose and fix knocking noise in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with symptoms, diagnostics, and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Knocking noise during acceleration
•Knocking noise when driving over bumps
•Engine misfire or rough idle
•Decreased fuel efficiency
•Vibration felt in the steering wheel or floorboard

Diagnostic Steps

1
Start the engine and listen for the knocking noise to identify its source.
2
Use a stethoscope or mechanic’s ear to isolate the location of the noise.
3
Check the engine oil level and condition to rule out low oil or oil sludge.
4
Inspect the suspension components, including struts and control arms, for wear or damage.
5
Check for loose or damaged exhaust components that may cause rattling.
6
Scan the vehicle’s OBD-II system for any trouble codes related to the engine or transmission.

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
•Torque wrench
•Oil catch pan
•Pry bar
•Jack stands
•Wrench set
•Stethoscope or mechanic’s ear

Parts Required

•Engine oil
•Engine mounts (if needed)
•Suspension components (if worn)
•Exhaust mounting hardware (if applicable)

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Diagnostic Steps

1
Start the engine and listen for the knocking noise to identify its source.
2
Use a stethoscope or mechanic’s ear to isolate the location of the noise.
3
Check the engine oil level and condition to rule out low oil or oil sludge.
4
Inspect the suspension components, including struts and control arms, for wear or damage.
5
Check for loose or damaged exhaust components that may cause rattling.
6
Scan the vehicle’s OBD-II system for any trouble codes related to the engine or transmission.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a level surface, and set the parking brake.
Disconnect the battery to ensure safety while working on electrical components.

2. Engine Inspection

Sub-steps:
- Check the engine oil level and top off as necessary with the recommended oil type.
- Inspect the engine mounts for wear or damage and replace if found faulty.
- If the knocking originates from the engine, remove the oil pan to inspect for worn connecting rods or bearings.
Tools Required: Socket set, torque wrench, oil catch pan.

3. Suspension Inspection

Sub-steps:
- Visually inspect suspension components (struts, shocks, control arms) for signs of wear or damage.
- Use a pry bar to check for play in the bushings and ball joints.
- Replace any worn components with OEM or high-quality aftermarket parts.
Tools Required: Pry bar, jack stands, socket set.

4. Exhaust System Check

Sub-steps:
- Inspect the exhaust system for loose brackets or damaged heat shields.
- Tighten any loose connections or replace damaged components as necessary.
Tools Required: Wrench set, exhaust hanger removal tool.