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post #1 of 9 (permalink) Old 12-15-2010, 07:29 PM Thread Starter
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Power Out

This isn't for a Cobalt but a 2003 S10. But I think it is a generic enough problem. My kid was driving today and said the battery tell tale came on and then went off. Then he said 5 or 10 minutes later he lost all electrical power but the engine was still running - no lights, no radio, no instrument cluster, nothing. Then the engine died and it will not start.

The battery is less than a year old. I replaced it myself. I checked the serpentine belt tonight (about 30 minutes ago) and it still looks good. My next guess is that the alternator is bad. I'm going to take my meter over there and some jumper cables and see if I can get it started so I can test the alternator.

What do you guys think? Is the alternator a good bet or could it be something else? This truck has about 170,000 miles on it.



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post #2 of 9 (permalink) Old 12-15-2010, 07:56 PM
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alternator for sure.

---------- Post added at 09:55 PM ---------- Previous post was at 09:54 PM ----------

I've had that happen to me with my old Lumina and a Grand am

---------- Post added at 09:56 PM ---------- Previous post was at 09:55 PM ----------

Make sure you also check the wires too though.
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post #3 of 9 (permalink) Old 12-15-2010, 08:06 PM
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Put cables on it, start it up pull off the cables and let it run, if it just dies again you need a new alternator.
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post #4 of 9 (permalink) Old 12-15-2010, 08:15 PM Thread Starter
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Quote:
Originally Posted by DROPPEDATBIRTH View Post
Put cables on it, start it up pull off the cables and let it run, if it just dies again you need a new alternator.
Thanks guys. I'll do that tomorrow. I see AutoZone has them:

New $144.99
Reman $114.99
and a cheap one with a 1 year warranty for $79.99

That's with the core rebate so I'll probably get the reman one because it has a lifetime warranty.



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post #5 of 9 (permalink) Old 12-15-2010, 08:43 PM
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I had the same issue with my 98' S10 Blazer 4.3l...It died, then you couldn't start it, then you wait an hour, and no problems...odd. . .and sometimes no start at all, then wiat 10min and no problem...sub'd

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post #6 of 9 (permalink) Old 12-16-2010, 04:32 PM Thread Starter
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Quote:
Originally Posted by USAMPDUFFY View Post
I had the same issue with my 98' S10 Blazer 4.3l...It died, then you couldn't start it, then you wait an hour, and no problems...odd. . .and sometimes no start at all, then wiat 10min and no problem...sub'd
This afternoon I picked my son up and got an alternator from from the auto parts store, since it was near by. We went over to where the truck was and I got out my jumper cables and we got it started. I pulled the cables off and it kept on running so I told him to drive it home and I would follow him.

We made it all the way home and then he helped me replace the alternator. It wasn't too bad except trying to get the serpentine belt back on - what a pain. I know I probably should have replaced that too while I was at it but here's hoping it lasts a while longer. So far so good. He's out and i haven't gotten a phone call yet!



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post #7 of 9 (permalink) Old 12-16-2010, 05:04 PM
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Nice, glad it worked out for you.
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post #8 of 9 (permalink) Old 12-16-2010, 06:30 PM
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post #9 of 9 (permalink) Old 12-16-2010, 06:34 PM
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Love it when a plan comes together! hahah

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