307 first sound when I run it

Hi Friends, When I first start the car in my 307 model car, it sounds like 1-2 min whistling. then this sound is cut off. Can you cause it? I have come across those who offer powder on a similar topic, but can anyone inform if they have a similar problem or know why?

If the sound is evident, it is better to share it with a sound recording or video. Let's assume that the sound comes from the alternator belt in the first stage, after running the tool, touch the belt and check the situation.

[QUOTE = qqyyxx] If the sound is evident, it is better to share it with a sound recording or video. Let's assume that the sound comes from the alternator belt in the first stage, after running the tool, touch the belt and check the situation. [/ QUOTE]
I think he came from there. These days he remained in a very dusty environment. I wonder if he might have been affected by that. Can you explain what it means to pour water on the belt?

If the sound comes from the strap, it gives an answer to the action when water spills. If the sound continues, we can interpret that there is no sound from the belt.