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3800SC Voltage by Lou6t4gto
Started on: 02-08-2015 01:31 PM
Replies: 6 (121 views)
Last post by: Lou6t4gto on 02-18-2015 06:50 PM
Lou6t4gto
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Report this Post02-08-2015 01:31 PM Click Here to See the Profile for Lou6t4gtoClick Here to Email Lou6t4gtoSend a Private Message to Lou6t4gtoEdit/Delete MessageReply w/QuoteDirect Link to This Post
car runs great, I had to replace the ALT because it was on charging 7-11 volts. Now it charges 14, but Still, "once in awhile" the VOLT LIGHT comes on, it's still reading 14 volts, but the light will come on for awhile, go off, come back on. What's up with that ? Thanks
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cmechmann
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Report this Post02-08-2015 02:55 PM Click Here to See the Profile for cmechmannClick Here to Email cmechmannSend a Private Message to cmechmannEdit/Delete MessageReply w/QuoteDirect Link to This Post
The hot side of the batt bulb is on with key on and the alternator is supposed to ground it turning the light on. If that wire grounds, the light can come on. The SA series alternators used the windings to ground that circuit. If alternator is not producing anything the windings are at ground potential. If they are, they are at positive potential, killing feed to bulb. On those, if the diodes were bad, the bulb would appear dim. But really turning on and off fast. On later alternators, the indicator is handled through the regulator and sent to the bulb or BCM.

3 choices. Alternator spinning too slow(belt?). Problem with the regulator. Or grounding indicator wire.
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Lou6t4gto
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Report this Post02-08-2015 04:47 PM Click Here to See the Profile for Lou6t4gtoClick Here to Email Lou6t4gtoSend a Private Message to Lou6t4gtoEdit/Delete MessageReply w/QuoteDirect Link to This Post
going to be changing the Belt because of chirping/ screach noise, All pullies are new, new PS pump, AC comp, But the belt is kind of Dry, So.... Maybe the belt will help.
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Lou6t4gto
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Report this Post02-16-2015 02:08 PM Click Here to See the Profile for Lou6t4gtoClick Here to Email Lou6t4gtoSend a Private Message to Lou6t4gtoEdit/Delete MessageReply w/QuoteDirect Link to This Post
Wire/plug not seated properly at the Alt. All is well (except for the sound of a "Flock of Birds") belt !, new one on the way :-)
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Lou6t4gto
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Report this Post02-17-2015 07:30 PM Click Here to See the Profile for Lou6t4gtoClick Here to Email Lou6t4gtoSend a Private Message to Lou6t4gtoEdit/Delete MessageReply w/QuoteDirect Link to This Post
New Belt, no more "Birds" ! Funny, the old belt, not too old, "Dayco" was still soft, no cracks or worn spots, just Noisey. Now I can actually Hear my new engine ! (the only thing that wasn't brand new), I figured "why fix what ain't broken". That'll teach me. LOL
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Csjag
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Report this Post02-17-2015 07:37 PM Click Here to See the Profile for CsjagClick Here to Email CsjagSend a Private Message to CsjagEdit/Delete MessageReply w/QuoteDirect Link to This Post
That is weird but glad you got rid of the chirping
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Lou6t4gto
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Report this Post02-18-2015 06:50 PM Click Here to See the Profile for Lou6t4gtoClick Here to Email Lou6t4gtoSend a Private Message to Lou6t4gtoEdit/Delete MessageReply w/QuoteDirect Link to This Post
Unbelievable, the damn Volt LIGHT is on AGAIN !! The plug is tight. Gremlins, I hate Gremlins ! LOL new ideas ? thanks
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