Alternator bad? Verify my troubleshooting please.

[Juggernaut]

Originally Posted by undy

I don't know if a GM alternator is better than a Ford one. I wouldn't imagine so. That was what mine was originally equipped with. Yours is definately a Ford unit.

That's what the idle amp and volt rating was @ 1000 rpm, 13.8 @ a 65 amp draw. The 100 amp rating is "max amps". I place more value on the idle amp rating than the max amps. It's at idle where we experiance most of our under-voltage conditions anyway.

Dave

Dave,

Thanks for explaining that to me, now I understand about the 100 amp rating. And, it also makes sense that under voltage conditions happen mainly at idle.

Looks like I'll be getting a new alternator, I'll let you know the outcome!

Thanks again for the help,
Randy