why does my Honda Accord make a thumping noise when I go over bumps

Honda Accord 10th Generation (2018-2022)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

448 words

Problem Statement

Learn how to diagnose and fix thumping noise in Honda Accord suspension. 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 disconnect the battery before working on the suspension system.
•Allow the vehicle to cool down before starting work if it has been recently driven.
•Wear safety glasses and gloves.

Symptoms

•Thumping noise when driving over bumps
•Vehicle feels unstable or bouncy
•Excessive body roll during turns
•Uneven tire wear
•Potential steering wheel vibrations

Diagnostic Steps

1
Inspect the suspension components visually for wear or damage, including struts, shocks, and bushings.
2
Check for loose or damaged exhaust components that may be causing noise.
3
Test drive the vehicle over bumps while listening for noise source location.
4
Inspect the wheel and tire assembly for any signs of damage or imbalance.
5
Check the alignment and suspension geometry for any misalignment that could cause abnormal noises.

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

•Jack and jack stands
•Socket set
•Torque wrench
•Bushing removal tool

Parts Required

•Struts or shocks (if necessary)
•Suspension bushings

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Diagnostic Steps

1
Inspect the suspension components visually for wear or damage, including struts, shocks, and bushings.
2
Check for loose or damaged exhaust components that may be causing noise.
3
Test drive the vehicle over bumps while listening for noise source location.
4
Inspect the wheel and tire assembly for any signs of damage or imbalance.
5
Check the alignment and suspension geometry for any misalignment that could cause abnormal noises.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and engage the parking brake.
Safety warning: Wear safety glasses and gloves.

2. Inspect and Replace Suspension Components

Sub-step 1: Raise the vehicle using a jack and secure it with jack stands.
Sub-step 2: Remove the wheel to gain access to the suspension components.
Sub-step 3: Inspect struts and shocks for leaks; if damaged, remove the bolts securing them to the vehicle.
Sub-step 4: Replace struts or shocks with manufacturer-approved parts, ensuring they are torqued to specifications (typically around 40-60 ft-lbs).

3. Replace Worn Bushings

Sub-step 1: Inspect all bushings for cracks or deterioration.
Sub-step 2: If worn, remove the old bushings using a bushing removal tool.
Sub-step 3: Install new bushings, ensuring they are seated properly.

4. Reassemble and Test

Sub-step 1: Reattach the wheel and torque lug nuts to specification (generally around 80-100 ft-lbs).
Sub-step 2: Lower the vehicle back to the ground.
Sub-step 3: Test drive the vehicle to confirm the noise has been resolved.