If the noise is coming from the engine compartment, and disappears after a few minutes, then it's probably belt noise.
Check the condition and tightness. If this is fine, I wouldn't worry about it.
Brakes also often make this noise when cold and/or wet. Again, if this noise disappears after a while, I wouldn't worry about it. If not, have them checked out.
Wednesday, September 22nd, 2010 AT 6:34 AM