why does my Toyota Camry XV70 (2018-2024) make a knocking noise when accelerating

Toyota Camry XV80 (2025-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

546 words

Problem Statement

Learn how to diagnose and fix knocking noise during acceleration in Toyota Camry XV70 (2018-2024). 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

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before inspecting the exhaust system.

Symptoms

•Knocking noise heard when accelerating
•Vibration felt through the steering wheel or floorboard
•Decreased engine performance or responsiveness
•Possible check engine light illuminated
•Increased fuel consumption

Diagnostic Steps

1
Inspect the engine and transmission mounts for damage or wear.
2
Scan the vehicle’s onboard diagnostics system with an OBD-II scanner for any fault codes.
3
Examine the exhaust system for loose components or leaks.
4
Check for issues in the drivetrain, including the CV joints and axle shafts.
5
Inspect the suspension components for any signs of wear or damage.
6
Evaluate the fuel quality and ensure it meets manufacturer specifications.

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
•Torque wrench
•Pry bar
•Wrench set
•Exhaust hanger removal tool
•Jack
•Jack stands

Parts Required

•Engine mounts (if damaged)
•Transmission mounts (if damaged)
•Exhaust hangers or components (if damaged)
•CV joints or axle shafts (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the engine and transmission mounts for damage or wear.
2
Scan the vehicle’s onboard diagnostics system with an OBD-II scanner for any fault codes.
3
Examine the exhaust system for loose components or leaks.
4
Check for issues in the drivetrain, including the CV joints and axle shafts.
5
Inspect the suspension components for any signs of wear or damage.
6
Evaluate the fuel quality and ensure it meets manufacturer specifications.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to ensure safety while working on the vehicle.

2. Inspect and Replace Engine and Transmission Mounts

Tools Required: Socket set, torque wrench, pry bar
Sub-steps:
1. Locate the engine and transmission mounts by referring to the vehicle’s service manual.
2. Use the socket set to remove the bolts securing the mounts.
3. Inspect the mounts for cracks or excessive wear. If damaged, replace with new mounts.
4. Install new mounts and torque the bolts to the manufacturer’s specifications (typically around 40-50 ft-lbs, but verify in the manual).

3. Check and Repair Exhaust System

Tools Required: Wrench set, exhaust hanger removal tool
Sub-steps:
1. Visually inspect the exhaust system from the engine to the rear of the vehicle for loose or damaged components.
2. Tighten any loose bolts or clamps.
3. Replace any damaged hangers or components. Use the wrench set to secure them properly.

4. Inspect Drivetrain Components

Tools Required: Jack, jack stands, torque wrench
Sub-steps:
1. Safely lift the vehicle using a jack and secure it with jack stands.
2. Check CV joints and axle shafts for any signs of damage or excessive play.
3. Replace any worn or damaged components as necessary, ensuring they are torqued to specifications.