Identifying the alternator

FRAGO

MEMBER
1991 BUICK PARK AVENUE
3.8L
V6
2WD
AUTOMATIC
170,000 MILES

Hi,

I need to change the alternator but I can't identify it yet. It's a Delco Remy but there is no label anymore. I don't know the nominal amperage. I don't know also how to identify the clock position of the plug because I don't know what is the 6 to 12 clock axis. What is the reference?
I added a picture.
Thanks for helping.
Franck

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9 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning,

You have a 105 amp alternator. I attached the chart for you.

https://www.2carpros.com/articles/how-to-replace-an-alternator

https://www.2carpros.com/articles/how-to-check-a-car-alternator

As far as the clock position, it is referring to the post from the battery. In your picture, it is a 6 o clock.

I also attached a wiring diagram for you to be sure the alternator is the actual issue.

https://www.2carpros.com/articles/how-to-check-wiring

I attached a YouTube video for the repair as well.

https://www.youtube.com/watch?v=BGY18f5Duh0

https://www.youtube.com/watch?v=63d_LSf-1ac

Roy

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Sunday, November 1st, 2020 AT 3:46 AM

ASEMASTER6371

MECHANIC
52,797 POSTS

Did you respond?

I got an email but nothing came through.

Roy

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Sunday, November 1st, 2020 AT 5:20 AM

FRAGO

MEMBER
32 POSTS

Hi Roy,

Sorry for the inconveniences, it does like that and I don't know why. My question was, how did you determine the plug clock position? What is the reference axis, which parts?
On RockAuto they speak about 7 or 11 o'clock for 105 amps alternator.

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Sunday, November 1st, 2020 AT 5:23 AM

ASEMASTER6371