I have owned multiple vehicles, but this is a first for me. My TJ only has 2 speakers and a little cd player yet my rpm's bounce whenever I turn it up half ways. What could cause this? Sitting at idle it is really bad, it will bounce between 700-800. Whats even crazier is that the rpm's will bounce while driving too!! How could such a wimpy sound system stress my jeep so much? Its not like I have the music cranked. Is my alternator on its way out, is the battery crap? I am just scratching my head here. Help!