My fan is making a weird noise. Do u know what it might be. It just started.

It's the main fan next to the radiator. I pulled up to my house and before I parked I heard it. I lifted the hood and that's where it was coming from.

what does it sound like? is it still turning? wobble,vibrating,roaring?

No the fans won't go on. I had someone check it by the sensors. The fans went on. He said he thinks I need a new sensor.