Car Squeal when idoling?

I have a 2004 Honda Civic lx, and after the engine starts to warm up at idol it makes a squealing/rattle noise. Give it a few more minutes and it tends to go away. I was wondering if anyone had any clues as to what could be done to stop this.

Timing belt or. While your at it replace water pump, tensioner, and pulleys. If you don't, it may cause more expensive damages. But since its a civic parts are cheap and probably won't fail. Just have those thing checked up and tou are good to go!

The tightness of the alternator belt is not tight enough so it slips (just like squealing tires when they spin on asphalt… Except the belt is slipping in the alternator pulley.

Serpentine belt is loose…

Dust some body powder on the drive belts. Don't use "belt dressing" sprays. They never work.

Start looking 4 another car.

If it's squealing at idle then most likely the auxiliary belt has either not enough or too much tension, some are adjustable. If it squeals especially at or close to full steering lock as well then there's air in the power steering system which will be fed out over time by itself. It squeals then more because the pump has to work harder at close to and at full lock and so puts greater strain on the belt.

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