I have a 318 Dakota with 75K miles that has developed an almost constant
'chirping' sound when stopped in gear or in park at idle. It sounds like maybe
a bearing making noise to me. With the engine running, and listening to the
devices on the serpentine (alternator, power steering pump, compressor, etc.)
using a block of wood, the only thing that sounds abnormal to me is a grinding
noise in one of the tensioners (I'm not sure of it's correct name but it's one
of the pulley's that guide the serpentine belt). Am I going down the right
path here? Or might it be something else? If I'm right, what are the
implications of not replacing it? Can it just be lubed?
Thank you for any advice you can give.