Question about 1987 GMC S-15 Pickup

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Alternator problems recently i blew out an alternator and replaced, now the thing works for the day but when i come out in the morning to go to work the alternator ahs gone out again. i have looked for shorts but cant seam to find any. i have heard that by cutting the brn wire that feeds the guage in the truck i can keep this thing workin, any ideas. any way of finding the short without buyin another alternator to blow up?

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  • tigerstone69 Oct 18, 2008

    used a napa rebuilt, actually 2..

  • tigerstone69 Oct 19, 2008

    have had alt checked definatly dead, and after going thru a total of three , i gave up on it being a bad alt. all three worked while the truck was warm, but as soon as i came out the next morning, they would be dead. as in right from the get go. cant figure out what could be going on at night but that seams to be when it happens.



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Did you use a Kragen or other such cheap rebuilt? the failure rate on thos is terriable.

Posted on Oct 17, 2008

  • yadayada
    yadayada Oct 18, 2008

    test the alternator again, just because it is rebuilt doesn't mean it didn't fail, make sure the connectors to the alt. are tight and have no burned contacts also.



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