Ah...sneaky little twits aren't they?
... if it'* only an amplified sound, I shouldn't be too concerned...?? I was afraid of burning out a fan that is not supposed to be on all the time... I wonder if it'* the boots?
Badnit... drats...getting back behind the engine bruised me the first time.
This was taken in the car, windows up...I reved the engine slightly two times to discern between engine sounds and the higher pitched sound I'm hearing. I can pick it out better after the second revving.