1999 Isuzu Rodeo LS 3.2L V6 MT 272K miles
I've been hearing a whine for a few months now, but there have been no detrimental effects so far.
I replaced the serpentine belt idler-pulley last year when it went out screaming.
I used my mechanics stethoscope just now and it appears that the while "may" be coming from the serpentine belt tensioner pulley, which wouldn't be surprising since it has over 1/4 million miles on it and has spun billions of time.
Anyone else experienced this? It's been a few months or more since it started but nothing has happened (yet).
Thanks,
Mark