why does my Honda Accord shake when I brake at high speeds

Honda Accord 9th Generation (2013-2017)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

540 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 shaking in Honda Accord when braking at high speeds. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on the braking system.
•Allow the brakes to cool before touching any components after driving.

Symptoms

•Steering wheel vibrates when braking at high speeds
•Brake pedal pulsates during braking
•Vehicle pulls to one side when braking
•Increased stopping distance
•Uneven tire wear

Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Check brake pads for thickness and even wear characteristics.
3
Examine wheel alignment and tire condition for imbalance or misalignment.
4
Test the brake calipers for proper operation and sticking.
5
Inspect suspension components for wear or damage.
6
Scan for any error codes related to the braking system 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

•Socket set
•Jack and jack stands
•Torque wrench
•Dial indicator
•Wire brush

Parts Required

•Brake rotors (if warped)
•Brake pads (if worn)

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Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Check brake pads for thickness and even wear characteristics.
3
Examine wheel alignment and tire condition for imbalance or misalignment.
4
Test the brake calipers for proper operation and sticking.
5
Inspect suspension components for wear or damage.
6
Scan for any error codes related to the braking system using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Gather safety gear (gloves, goggles) and ensure the engine is off.

2. Wheel Removal

Sub-steps:
- Loosen lug nuts on the front wheels using a socket wrench.
- Lift the vehicle using a jack and secure it with jack stands.
- Remove the front wheels completely.

3. Brake System Inspection

Sub-steps:
- Inspect brake rotors for warping using a dial indicator. Replace if warped beyond specifications (typically 0.002 inches).
- Remove brake caliper bolts with a socket wrench and lift the caliper away from the rotor. Support it to avoid stress on the brake line.
- Check brake pads for even wear; replace if they are below the manufacturer's minimum thickness (usually 3 mm).

4. Brake Rotor Replacement (if warped)

Sub-steps:
- Remove the rotor from the hub by unscrewing any retaining screws.
- Clean the hub surface with a wire brush to ensure a proper fit for the new rotor.
- Install the new rotor, ensuring it is seated properly.

5. Reassembly

Sub-steps:
- Reinstall the brake caliper over the new rotor and secure it with caliper bolts to the manufacturer’s torque specifications (typically 25-35 ft-lbs).
- Reinstall the wheels and hand-tighten the lug nuts.
- Lower the vehicle from the jack stands and torque the lug nuts to the manufacturer’s specifications (typically 80-100 ft-lbs).

6. Test Drive

Conduct a test drive to ensure the problem has been resolved, monitoring for any vibrations or unusual behavior.