It could be a water pump or something electrical like a cooling fan. To check the water pump, remove the serp belt and start the engine. Run it only long enough to see if the sound is gone with the belt off. (NOTE: ONLY RUN THE ENGINE FOR A FEW SECONDS LIKE THIS. IT WILL OVERHEAT).
Let me know what you find.
Monday, December 13th, 2010 AT 5:08 AM