How do I fix the squeaking noise coming from my Vauxhall Insignia engine?

I recently noticed a high-pitched squeaking noise coming from my Vauxhall Insignia's engine whenever I accelerate. It seems to be more noticeable when the engine is cold. What could be causing this and how can I fix it?

The most likely cause of this noise is a worn out or loose fan belt. Inspect the belt for cracks or signs of wear and tighten or replace it if necessary. It's also a good idea to check the tension of all the belts on your engine as they can also contribute to squeaking noises.

Another potential cause could be a faulty pulley or tensioner. These components help to keep the belt in place and if they are worn or damaged, they can create noise when the belt is moving. Have a mechanic inspect and replace any faulty pulleys or tensioners.

It's also possible that the squeaking noise is coming from the engine itself. This could be due to lack of lubrication or worn out bearings. It's best to have a mechanic check your engine for any potential issues and address them before they become more serious.