Originally Posted by themudgician
my batt light came on today so i took the alt off and headed to autozone/ he looked at it and said it was a older alt and not off a 2003. i assured him i know what year my truck is. so he pulled on for a 2003 and it wasnt what i have so he pulled one for a 1997 7.3 diesel and that was it so i bought it and plugged it right in and it works. im confused why does my truck have 1997 style alt on it? the wiring apperars to be original and the wire loom has the time and date on a sticker that says 02 my belt diagram matches my pullie set up. any ideas the truck had 80,000 on it when i bought it cant imagine somebody changed the engine to a 1997. thanks for any info
I think, but not 100% sure, that both alts would work. The one that's supposed to be in your truck is a newer generation of alt., basically a revamped version of the '94-'97's. It's just possible, in the short time the last owner had it, he replaced it with a '97's for cost efficiency or something to that effect. If you've heard how an '02-older PSD sounded, you'd know. The '03's 7.3 has the quietest idle out of the entire run of the 7.3.