alternator problems

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BrianB1975

Member - Posts: 12

Joined: April 09, 2005

Location: United States

Posted: June 29, 2009 at 6:24 PM / IP Logged

Hi everyone,

I have a 1992 GMC pick-up (5.7 2wd). My initial problem was all of a sudden the battery light came on and the guage was staying near 11-12 volts. I figured with 177,000 miles and an original looking alternator, it probably was going bad. I bought a new alt and battery, same problem. just as a goof exchanged the alternator for another one cme problem. I hooked up a volt meter and tugged on the groud cable, ground strap, positive cables, etc. with no change. The meter stays around 11.6-12.0 volts, every now and again going up to 13.0-13.4 volts (that only lasts 15 seconds at best, then back into mid/upper 11's). Please help any info is greatly appreciated.

Thanks,

Brian

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the_one369

Copper - Posts: 80

Joined: December 15, 2005

Location: Michigan, United States

Posted: July 01, 2009 at 5:25 PM / IP Logged

on the back of the alternator where the wire harness is. unplug the harness and check to see if there are any damaged connectors in the plug.

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alternator problems

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