I'm wondering if anyone else ever had this happen. After "getting on it" I heard a clack clack clack noise coming from the Belt area of the engine. There were a few original worn parts I wanted to change anyway so I changed the serpintine belt, power steering pump, and the pulley on the tensioner. Noise went away until I jumped on it again. After regular city driving the noise faded. I also have an A/C delete with a pulley, the bearing is good and I looked at the harmonic balancer and it looked okay. I might add I ran the engine (shortly) with serpentine belt removed and there was no noise.