in the last week or two i have heard this loud, mid-pitched, chant from my engine area. i'm thinking it has something to do with the fan b/c i don't here the noise right away; it noramally a while after i've been driving b4 i hear it. i also haven't heard my fan come on in a while but i'm not getting any CEL indiactors or anything. the car believes everything is in working order.

has anyone had this happen or quite possibly know what it could be???

 

try ideling w hood up until it gets hot so the fan comes on.

give a look & listen