Quick question guys..I just brought my car down from baltimore to charlotte 450 mile drive.. When i parked the car on my driveway the rpm was dropping down to 200 and going back up to 1200 and fluctuating and eventually stalled out with the battery light coming on. i started the car about 3 times and started right up.. I herd it mught be an IAB but i do not have a clue on what that is can someone help me on this issue.. thanx..