I believe the V6 9-5's use a timing belt and not a chain. It could be your timing belt falling apart. I hope it's something simple and quick though.Just now getting back to this. We had a slew of tornadoes touch down here in the Dayton area and have been quite busy. No I have not checked belt yet. However, just noticed there is a 2 inch piece of the timing chain cover missing. Will try to get some pics and video loaded.