 Volt Meter Reading Analysis Needed |
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| Ansbacher |
 Mar 9 2015, 06:54 PM
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#1
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Senior Member  Group: Members Posts: 689 Joined: 4-July 14 From: Tampa Bay, Florida Member No.: 17,589  |
Simple question, I think. With engine running and no extra electrical loads turned on, my voltmeter reads a bit over 13 Volts. Turn on headlights and voltage drops to a bit above 12 Volts. Is that a normal drop or is something going on with the voltage regulator or alternator?
Ansbacher |
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| screenguy914 |
Mar 9 2015, 07:43 PM
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#2
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Member Group: Members Posts: 249 Joined: 6-July 09 From: So. Cal Member No.: 10,540 Region Association: Southern California |
Unless cranking the engine, system voltage should be about the same throughout the vehicle, including at the battery posts (12+V).
After starting the engine, the alternator's job is to provide enough electricity to recharge the battery and prevent it from discharging during normal operation. At full system load (i.e. all lights and accessories ON), the battery could be receiving up to 14V of voltage from the charging system, but above idle speed. Sherwood |
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| Ansbacher |
Mar 9 2015, 07:54 PM
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#3
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Senior Member Group: Members Posts: 689 Joined: 4-July 14 From: Tampa Bay, Florida Member No.: 17,589 |
Yes, I was reading volts from the center console gauge. Sounds like I need to check it at the battery with my meter tomorrow. Thanks all.
Ansbacher |
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Posts in this topic
Ansbacher Volt Meter Reading Analysis Needed Mar 9 2015, 06:54 PM
r_towle At idle, normal.
At high revs, not normal. Mar 9 2015, 06:58 PM dlee6204 I would say it's normal if Youre reading off t... Mar 9 2015, 07:02 PM Tom Depends on where the reading was being taken from.... Mar 9 2015, 07:06 PM Mike Bellis Almost ALL old car alternators make little or no o... Mar 9 2015, 08:44 PM 76-914 That is one inaccurate gage. Everyone has that res... Mar 9 2015, 09:00 PM Spoke The voltage you measure is expected of the center ... Mar 9 2015, 09:00 PM Dave_Darling The center console voltmeter is mostly there for ... Mar 10 2015, 12:55 AM euro911 My center console voltmeter reads a little above 1... Mar 10 2015, 03:02 AM
somd914
My center console voltmeter reads a little above ... Mar 10 2015, 03:46 AM The Cabinetmaker I'm gonna call foul on the old wiring thing. T... Mar 10 2015, 06:04 AM euro911 32 had passed by the time I acquired the 'BB... Mar 10 2015, 10:31 PM |
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