FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Why is my 2021 Toyota Camry making a loud noise during acceleration? - Toyota Camry
Home/Cars/Toyota/Camry/Eighth Generation (2018-present)/Why is my 2021 Toyota Camry making a loud noise during acceleration?

Why is my 2021 Toyota Camry making a loud noise during acceleration?

Toyota Camry Eighth Generation (2018-present)

Error Codes
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
730 words

Problem Statement

Diagnose and repair loud noise during acceleration in a 2021 Toyota Camry. Follow detailed steps to identify and fix the issue effectively.

Affected Component
exhaust system, heat shields, engine/transmission mounts, belts, tires, transmission

Symptoms

  • •Loud noise during acceleration
  • •Noise increases with engine RPMs
  • •Vibrations felt through the steering wheel or floorboard

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7

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

  • •Flashlight
  • •basic hand tools (screwdrivers, wrenches)
  • •engine stethoscope or a length of hose
  • •soapy water in a spray bottle
  • •socket set
  • •pry bar
  • •jack and jack stands
  • •torque wrench
  • •tire pressure gauge
  • •tread depth gauge
  • •OBD-II scanner

Additional Information

Affected Component
exhaust system, heat shields, engine/transmission mounts, belts, tires, transmission
Difficulty
medium
Severity
medium
Tools Required
11 items

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation
Problem Diagnosis: Loud Noise During Acceleration in 2021 Toyota Camry
Possible Causes
  1. Exhaust Leak
  2. Loose or Damaged Heat Shield
  3. Worn Engine or Transmission Mounts
  4. Failing or Worn Belt Components
  5. Tire Issues
  6. Transmission Problems

Step 1: Preliminary Inspection

  • Tools Required: Flashlight, basic hand tools (screwdrivers, wrenches).
  • Action: Inspect the undercarriage and engine bay for any visible signs of damage or loose components. Pay particular attention to the exhaust system, heat shields, and mounts.

Step 2: Check for Exhaust Leaks

  • Tools Required: Engine stethoscope or a length of hose (to listen for leaks), soapy water in a spray bottle.
  • Action:
    1. Start the engine and let it idle.
    2. Use the engine stethoscope or the hose to listen for any hissing or loud noises around the exhaust manifold, catalytic converter, and joints.
    3. Spray soapy water on joints to identify leaks (bubbles will form).

Step 3: Inspect Heat Shields

  • Tools Required: Socket set, pry bar (if necessary).
  • Action:
    1. Check that all heat shields are securely attached and not rattling.
    2. Gently tap on the shields to see if they produce noise; if they do, they may need to be reattached or replaced.

Step 4: Check Engine and Transmission Mounts

  • Tools Required: Jack and jack stands, torque wrench.
  • Action:
    1. Safely lift the vehicle and support it with jack stands.
    2. Inspect mounts visually for cracks or separation.
    3. Use a pry bar to move the engine/transmission slightly; excessive movement indicates worn mounts.

Step 5: Inspect Belts and Pulleys

  • Tools Required: Flashlight, socket/wrench set.
  • Action:
    1. Visually inspect the serpentine belt for wear or fraying.
    2. Check pulleys for looseness or noise when spun manually.

Step 6: Inspect Tires

  • Tools Required: Tire pressure gauge, tread depth gauge.
  • Action:
    1. Check tire pressures and ensure they are at manufacturer specifications.
    2. Inspect tread depth and look for uneven wear, which can cause noise during acceleration.

Step 7: Transmission Check

  • Tools Required: OBD-II scanner (if needed), torque wrench.
  • Action:
    1. If symptoms point towards the transmission, scan for any error codes that might indicate issues.
    2. Check transmission fluid level and condition; low or burnt fluid can result in noise.
Repair Instructions

Repairing an Exhaust Leak

  1. Remove the damaged section: Use appropriate sockets to detach the affected parts.
  2. Replace gaskets or pipes: Install new gaskets or exhaust parts as necessary.
  3. Reassemble and test: Reattach all components securely and start the engine for a test.

Reattaching Loose Heat Shields

  1. Realign the shield: Position the heat shield properly.
  2. Secure it: Use new bolts or clamps if necessary to ensure it does not rattle.

Replacing Engine/Transmission Mounts

  1. Support the engine/transmission: Use a jack to support the engine/transmission.
  2. Remove old mounts: Use a socket to remove the bolts securing the mounts.
  3. Install new mounts: Position the new mounts and secure them with bolts to the manufacturer’s torque specs.

Replacing Worn Belts or Pulleys

  1. Remove old belt: Release tension using the tensioner and slide off the old belt.
  2. Install new belt: Route the new belt according to the diagram, ensuring proper alignment.
  3. Replace worn pulleys: Remove the old pulleys and replace them with new ones.

Addressing Tire Issues

  1. Inflate tires: Adjust tire pressures to manufacturer specifications.
  2. Rotate or replace tires: If wear is uneven, rotate or replace tires as necessary.

Transmission Fluid Change

  1. Drain old fluid: Remove the drain plug and allow fluid to drain into a container.
  2. Replace filter (if applicable): Remove the old filter and replace it with a new one.
  3. Refill with new fluid: Replace the drain plug and refill the transmission with the correct type of fluid.
Conclusion

After completing these diagnostic and repair steps, take the vehicle for a test drive to ensure the noise during acceleration has been resolved. If the problem persists, further investigation by a professional technician may be required.