Hello.
Have a Squeaking and light rattling sound from the serpentine belt.
I have replace belt tenisoner (only the wheel), and the belt.
Was better one day, and now the same. Have check harmonic balancer but it seems fine, also clean it Only small small movement in and out on idling.
Try with some belt dressing, and the noise went away. Can i have got a bad belt or is it some other common problem?
Bought the belt at rock auto, but dont remember the brand.
Here some movie clip.
Hope someone can identify the problem.
Thanks