alternator light, G light, that is |
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alternator light, G light, that is |
Rrrockhound |
Oct 30 2014, 07:02 PM
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#1
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Member Group: Members Posts: 192 Joined: 30-November 05 From: Delaware, OH Member No.: 5,213 Region Association: None |
After my alternator went kaput on a road trip, I had it rebuilt. On the way home, things seemed fine until it got dark and I noticed that the alternator light stays on until the revs reach about 1800 rpm on the tach (although I think my tach reads a little high). I didn't notice that as long as it was light out. The voltmeter in the console reads about 13.5 V though, or about 12.5 with the headlights on. At any rate, I was able to drive home about 4 hours after dark with no issues. Still, does this indicate a bad rebuild? I hope not, because the shop that did the work is about 7 hours away.
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stugray |
Oct 31 2014, 07:20 AM
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#2
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
Typical 1 wire alternators (like used on modern cars) are "self excited".
They have to be revved up to a certain point before the field winding is fully energized. The stock 914 alternator is externally excited by the gen light bulb. Is your alternator stock? |
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