If you hear loud squealing or squeaking coming from the timing belt (cambelt) area, it may indicate belt wear, misalignment, or a failing tensioner or pulley. Since the timing belt synchronises the camshaft and crankshaft, any issues with it can cause severe engine damage if ignored. An inspection is critical to prevent costly repairs.

What does it mean if your timing belt is squealing or squeaking?

A squealing or squeaking noise from the timing belt area often points to a loose or worn belt, a failing tensioner, or misaligned pulleys. In some cases, oil leaks onto the belt can cause slippage and noise.

Common causes of timing belt noise

• Worn or stretched timing belt
• Failing belt tensioner or idler pulley
• Misaligned or damaged pulleys
• Contamination from oil or coolant leaks
• Improper installation of a replacement belt

Why do you need to fix this problem quickly?

The timing belt is a critical component. If it fails, the engine may suffer catastrophic damage, including bent valves, damaged pistons, or even complete engine failure. Noises should never be ignored.

How do you know when to get it checked?

You should book an inspection if:

• You hear squealing or squeaking near the front of the engine
• The noise worsens on startup or acceleration
• The belt is overdue for replacement (typically every 100,000 km or as recommended by the manufacturer)
• You notice oil leaks around the timing cover
• The engine runs rough or misfires

What happens during an assessment?

A mechanic will:

1. Listen to and locate the source of the noise
2. Inspect the timing belt for wear, cracks, or contamination
3. Check the tensioner and idler pulleys for proper operation
4. Inspect for oil or coolant leaks affecting the belt
5. Recommend timing belt, tensioner, and pulley replacement if required

How much does it cost to fix?

Timing belt replacement (including tensioners and pulleys) typically costs $800–$1,600+ depending on the vehicle. If additional repairs such as water pump replacement are needed, costs may increase.

Is it unsafe to drive with a noisy timing belt?

Yes. A noisy timing belt often means it is loose, worn, or failing. Driving with this issue can lead to sudden engine failure and very costly repairs. Immediate inspection and repair are recommended.