"Chirping" noise under the hood

[Niveko]

I am experiencing exactly the same noise that the owner of the ram in this youtube video is. I am wondering if anyone has diagnosed the same problem with their truck and have fixed it. It sounds like the noise is on a revolution, which leads me to believe it is a bearing but that's just a guess. My friends dad is experiencing the exact same thing and he thought the culprit was the idler pulley bearings so he replaced both, but the noise was still there.

https://www.youtube.com/watch?v=kqdhiyz49Uc


Thanks

 

[Tach_tech]

Take the belt off and run the engine. If the noise is gone than it's accessory related. If it's still there then it's not.

 

[grizzstang]

Take the belt off and turn everything by hand. You should be able to feel and hear a bearing on it's way out. Don't forget to check the water pump.

 

[Niveko]

Appreciate the replies will give those a go, thanks.