Woke up and went out to my car for work. Noticed a chirping sound coming from under my head. Stopped by auto parts store to see what they thought. Changed serpentine belt, idler pulley, and pensioner with no success. Noticed Harmonic Balancer pulley looked like it was crumbling. Did not get it fixed. DIY for $100 plus labor time or have dealership do it 7@$700. What a bummer for a huge fan of Ford.