7.3 Alternator issues

[MarkTod]

My 2002 Excursion is going through alternators about every four months. Anyone else having this issue and is there a solution?

Thanks

[russelltevans]

My dad has a 97 f350 7.3 and we have put 3 alternators on it in the last two years. I cant figure out what the deal is.

[Tj Krawler]

What kind of alternators are you putting on it? Are they new or rebuilt? Where are you buying them from?

How old are the batteries? Have they been tested recently?

[F350none]

I know this is a late response but it may help someone.

Had this issue on a company truck years ago. After many alternators and a wiring harness we discovered the glow plug relay was sticking. After correcting the issue and driving a few more miles a glow plug came apart and went through a cylinder. I recommend replacing the relay and plugs. That is what fixed that one. Well a long block fixed the plug issue so i recommend doing them before they come apart if this in fact your issue.

[lanierboatsales]

The alternator harness goes bad and it will eat alternators. There is a replacement harness available. Seen 2 trucks with this problem, new harness fixed both.