my Ford F-150 13th Generation (2015-2020) has a knocking noise when driving

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

540 words

Problem Statement

Learn how to diagnose and fix knocking noise in Ford F-150 13th Generation (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always use jack stands when working under the vehicle.
•Disconnect the battery before performing electrical work.

Symptoms

•Knocking noise that increases with vehicle speed
•Noise may be more pronounced when turning or going over bumps
•Possible vibrations felt through the steering wheel or floor
•Unusual handling characteristics or loss of stability
•Check engine light may be illuminated (if related to drivetrain issues)

Diagnostic Steps

1
Inspect the undercarriage for loose or damaged components, including the exhaust system, suspension, and drivetrain.
2
Perform a visual inspection of the engine mounts and transmission mounts for signs of wear or damage.
3
Check for any play in the wheel bearings by lifting the vehicle and spinning the wheels.
4
Use a stethoscope to pinpoint the source of the knocking noise while the vehicle is running.
5
Scan for any error codes using an OBD-II scanner to identify potential related issues.

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
•Lug wrench
•Jack and jack stands
•Torque wrench
•Stethoscope (optional)

Parts Required

•New engine and/or transmission mounts
•Wheel bearings (if needed)
•Exhaust hangers (if damaged)

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Symptoms

•Knocking noise that increases with vehicle speed

•Noise may be more pronounced when turning or going over bumps

•Possible vibrations felt through the steering wheel or floor

•Unusual handling characteristics or loss of stability

•Check engine light may be illuminated (if related to drivetrain issues)

Diagnostic Steps

1
Inspect the undercarriage for loose or damaged components, including the exhaust system, suspension, and drivetrain.
2
Perform a visual inspection of the engine mounts and transmission mounts for signs of wear or damage.
3
Check for any play in the wheel bearings by lifting the vehicle and spinning the wheels.
4
Use a stethoscope to pinpoint the source of the knocking noise while the vehicle is running.
5
Scan for any error codes using an OBD-II scanner to identify potential related issues.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and engage the parking brake.
Disconnect the negative battery terminal to prevent electrical shorts while working.

2. Inspect and Tighten Components

Sub-steps:
- Use a socket set to check and tighten all suspension bolts, including control arms, struts, and sway bar links.
- Inspect the exhaust system for loose hangers or damaged components. Tighten or replace as needed.

3. Replace Damaged Engine/Transmission Mounts

Sub-steps:
- Lift the vehicle using a jack and secure it with jack stands.
- Remove the components that obstruct access to the engine or transmission mounts.
- Unbolt the old mounts using a socket set and replace them with new mounts.
- Torque the new mounts to the manufacturer’s specifications.

4. Wheel Bearing Inspection and Replacement

Sub-steps:
- Remove the wheel and tire assembly using a lug wrench.
- Inspect the wheel bearings for play by grasping the wheel at 12 o'clock and 6 o'clock positions and checking for movement.
- If play is detected, remove the brake caliper and rotor, then unbolt and replace the wheel bearing with a new one.
- Reassemble the components and torque bolts to specifications.

5. Final Assembly

Reinstall any components removed during the repair process.
Reconnect the negative battery terminal and ensure all tools are removed from the engine bay.