I have had this problem since I got my Contour back in 01. For some reason when I hit about 5,500- 6,00 RPM's I have the Charging System light flash. Its sometimes fast and sometimes slow and sometimes not at all. I have the 5th Alternator on it with a new belt tensioner and a new A/C Compressor. I have no idea why it is still doing this but it never fails to do it daily if I push it. Any responce would be appreciated.