Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 2003 Dodge Caravan 3.3 flex whining sound › 2003 Dodge Caravan 3.3 flex whining sound January 30, 2012 at 11:00 am #438805 metrentParticipant actually, i was wrong. I went and borrowed a pair of stethoscopes from my father. upon testing the surface of multiple areas i found it is the loudest at the alternator.