I have a 06 f350 and put an edge attitude in in and it runs great but after i put the chip in the alternator took a crap (was told that was common) but after replacing that the truck ran great but every once and a while the battery light would come on the dash but the chip would say 13.9v and then turn off eventually. It would not start this morning and then on the way home from work it dropped to 9 then 8v and the battery light came back on along with the "limp mode" light and abs. What is going on here? I am new to diesels and this is my first one.