Originally Posted by
perrotto
The previous owner of my car took the a/c out. The lines left over from the a/c were rattling against my air intake. You might have something loose, perhaps.

It's possible, the a/c is there (though it needs to be refilled due to leak every year), but it's possible that something's loose. But why would the sound come from dashboard? that's honestly what it soudns like - not from engine bay - from dashboard