It could be many things. I would start by looking at the engine bay and anywhere else you can get to to see difference places on the front of your car. Look for scratches or places that have been rubbing together to try and determine what is hitting what.
__________________ 2003 Cobra Vert (Redfire) #3938 of 5082 @ 05/27/2003
472rwhp/493rwtq -Modification List - Dyno Sheet 2012 Mustang 3.7L M6 (Kona Blue) 2011 Ford Edge Sport (Red Metallic)