Re: Serpentine belt noise
Your idler is most likely shot. There are bearings inside that will wear over time and cause the noise you hear. You can replace the pulley without removing the whole belt assembly. I'd recommend on renting or borrowing some pulley remover tools to save yourself some time and aggravation.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!