It is most likely 1 of two pulley bearings going bad.
Find the tensioner and idler pulleys, will can of spray lube in hand. With vehicle off spray ONE of the pulleys center bolt, start vehicle if noise is gone for short time replace that pulley. If noise still present repeat procceedure on other pulley, if noise is gone then replace that pulley.
Sunday, March 8th, 2009 AT 3:44 PM