my Toyota Camry XV50 is making a squealing noise when starting

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the engine is off and cool.
• Disconnect the battery to prevent any electrical issues.

2. Inspect and Replace the Drive Belt

• Tools Required: Socket set, belt tensioner tool, torque wrench.
• Sub-steps:
  1. Remove the engine cover (if applicable) to access the drive belt.
  2. Use the belt tensioner tool to relieve tension on the drive belt.
  3. Carefully remove the old drive belt from the pulleys.
  4. Inspect the new drive belt for any defects before installation.
  5. Route the new drive belt according to the belt routing diagram in the engine bay.
  6. Reapply tension using the belt tensioner tool and ensure the belt is correctly seated on all pulleys.

3. Inspect and Replace Pulleys (if necessary)

• Tools Required: Socket set, torque wrench.
• Sub-steps:
  1. If any pulleys are found to be damaged or misaligned during the inspection, remove them by unscrewing the bolts.
  2. Replace with new pulleys, ensuring they are aligned properly.
  3. Torque the bolts to the manufacturer's specifications.

4. Reassemble and Test

• Sub-steps:
  1. Reconnect the battery.
  2. Start the engine and observe for any remaining noise.
  3. Allow the engine to reach normal operating temperature while listening for abnormal sounds.