Alternator replacement instructions please?

JAMESATSHARP

MEMBER
2002 ISUZU RODEO
6 CYL
2WD
AUTOMATIC
48,000 MILES

I have a charging problem that has stumped most of the mechanics I've talked to. It began with a bad alternator, replaced. Then no problem till long trips (3-4hrs) at night with lights drawing more current, battery went dead several times in same scenario. During these times the alternator would seem to overheat and quit charging till cooled.

1 Reply

BORIS K

MECHANIC
799 POSTS

Hello,

It sounds like you might have too much load going through your alternator. Does your vehicle have any additional consumers like more powerful driving lights or perhaps a sound system installed? It could be that the alternators rated output is not high enough to cope with the additional load created by these additional consumers. This would cause the alternator to overheat . Using a digital volt meter you can test the alternator yourself

To check your alternator please see below links:

https://www.2carpros.com/articles/how-to-use-a-voltmeter
and
https://www.2carpros.com/articles/how-to-check-a-car-alternator
and
https://www.2carpros.com/articles/how-to-replace-an-alternator
and
https://youtu.be/FTGz0PKIl84

How to replace the alternator:

https://youtu.be/Alf82D1mLj0

Please let us know how you get along.

Cheers, Boris