It's not the fan motor. I've WD'd all pulleys. After which the noise seemed to get worse. it's was localized around the water pump, which is why i changed that first. but now, i can;t really tell where the noise is comin from. An old man told me to take a length of pipe and use it as a stethoscope to try and pinpoint the squeal. I gonna feel real dumb if it's just a stupid idler pulley or something.