[CJFusco]

"After replacing my alternator and re-routing the cables, the exact same thing happened to me. "

Interesting... but I haven't messed with anything like that...

"Bad alternator diode? "

How do i check this?

"Is the exhaust getting louder, or just changing tone? sounds like you have a cylinder cutting out. If you have weak voltage you might not get a good spark out of the coil. how old is your battery?"

Battery is about 2 years old. It seems as though the exhaust is louder... I am pretty sure it is, but, of course, the vibrations might theoretically just make it seem louder.

"Totally off the wall here, but could the bearings in your AC compressor have gone out? That would explain the vibrations, and if the belt which the AC and alternator share was slipping because of the AC compressor you wouldn't be getting enough charging from the alt....just a shot in the dark here."

Interesting. I'm not sure how this would effect the exhaust sound, but interesting nonetheless.