Replacing the alternator on a 98 - any reason not to put in the 100A?

[Desert100]

I have a concern about the alternator on my 98 LC (182K mi).

The battery seems OK (it's only 18 months old and when I put it on an external charger it charges up to 12.8V). With the engine running I measure 13.5V across the battery terminals, but after driving the vehicle I'm finding the battery appears only half charged (12.4V).

Apparently the 1998s had two alternators, 80A (part# 27060.502.50) or 100A (part# 27060.502.60), and I've been quoted the same price for each ('factory remanufactured'). I could find out which one is currently installed, but I'm wondering whether there is any reason not to just go with the 100A regardless?

 

[PabloCruise]

Good question. I guess you could see if there are 2 different wire harnesses connecting to alt in the '98?

 

[2001LC]

Did your grease your post?

 

[PabloCruise]

Did your grease your post?

We should try to keep things family-friendly in here...

 

[2001LC]

We should try to keep things family-friendly in here...

Don't get all hot and bothered....LOL

I should have specified battery post.

 

[Slickspawn]

I used the 100A unit.

 

[Somebodyelse5]

Ill be using the 100 amp when i grease my post manana

 

[re_guderian]

Do you have a choice? I thought all the news (reman'd) ones are the higher output ones?