Hey David...welcome to the forum.David Joor said:I just got my 01 and it does the same thing, freaked me out. However I do have another sound that I can hear at low RPM, around 2000 - 2500 that seems to be coming from the engine compartment. It is a flutter type sound, almost like it is a slight ping in the exhaust. The dealer thought it maybe just some bad gas because the car was a northern car brought down to the hot and humid south. I have run a few tanks of Chevron through it already and still there. Any idea what this sound is? I am having a hard time noticing if it speeds up with the increase of RPM because it is hard to hear over the engine any higher up. Maybe valve clatter?