OK you guys, here's a problem I've had with my car and it's starting to piss me off. For a while I've had a noise that seems to come from the PS dash, maybe behind the glove box area, maybe a little lower. It sounds like it could be an HVAC mixing door slamming or something like that. I could be completely off on that guess. It seems to happen randomly. It sounds like a hollow clunk, not really metallic. I don't think it's something loose because it does it going down a smooth road. At least we think they smooth here in NH. Is there a vacuum dashpot or something that could make a hollow clunking noise. I have felt around and not found anything loose. And no, it's not something in the glovebox....I emptied it already. In fact, I did that first..... Thanks in advance....