04 Expedition Check Charging System
I've got an 04 Exped 5.4L with 93000 miles on it. Under HEAVY accelaration the battery light comes on for a split second, the beeper goes off, and the info. screen says check charging system. I thought maybe the belt was slipping, but it looks brand new. The voltage gauge does not change when this happens, but like I said, it lasts for less than a second. I'm thinking that due to the miles on the truck the alternator can't keep up in that moment when it downshifts and jumps to the higher rpm, but then again the rpm keeps climbing and it goes away. It does the same thing off the line as well. Any help would be much appreciated.