Mechanics

I HAVE TRIED 2 REMANUFACTURED ALTERNATORS & THERE NOT CHARGING WHAT WOULD CAUSE THEM TO NOT CHARGE ?

1997 Chevrolet Astro • 219,000 miles

I have a 1997 chevy astro 4.3liter I replace the alternator twice with remanufactured alternators & it charge sometime I cant figure the problem?
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Astro man
September 30, 2012.



Make sure the heavy red wire is 12 volts.

The other connector will have a hot wire, key on. Does the light work on the dash?

Roy

ASEMaster6371
Sep 30, 2012.
Thanks for the reply asemaster 6371 ! There's only a gauge no light. I tested the heavy red wire with a test light & there's power, I tested the connector wire and it has power with the key on. Tested the battery with dvom & it reads 12.58 with the van off & it read 13.89 w/van running. Sometime when I turn the van off & restart the charging voltage will read 13.01 & start dropping down into low 12's

Tiny
Astro man
Sep 30, 2012.
Ok, then it leaves the alternator itself. What kind are you using?

Roy

ASEMaster6371
Sep 30, 2012.
If im not mistaking its a delco reman. Im not absolutely sure, I purchased it from a local parts house. I dont know if they do in house rebuilding but it has a warranty. I really would like to try another rebuilder, this is the second alt. From these guys, ill replace it today & see if the problem go away! Thanks again asemaster6371 ill let u know the outcome !

Tiny
Astro man
Sep 30, 2012.
Good luck

Roy

ASEMaster6371
Sep 30, 2012.