 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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| euro911 |
Mar 10 2015, 03:02 AM
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#2
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,851 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California 
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My center console voltmeter reads a little above 12v too, but drops dramatically when I hit the brakes or activate the turn signals. One of these days I do need to clean up all the connectors - it's probably just a corroded ground wire.
Voltage readings taken with a VOM (aka: multi-meter) at the battery show the true voltage and it's charging my battery fine (IMG:style_emoticons/default/smile.gif) |
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| somd914 |
Mar 10 2015, 03:46 AM
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#3
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Member Group: Members Posts: 1,171 Joined: 21-February 11 From: Southern Maryland Member No.: 12,741 Region Association: MidAtlantic Region |
QUOTE(euro911 @ Mar 10 2015, 05:02 AM)  My center console voltmeter reads a little above 12v too, but drops dramatically when I hit the brakes or activate the turn signals. One of these days I do need to clean up all the connectors - it's probably just a corroded ground wire. Voltage readings taken with a VOM (aka: multi-meter) at the battery show the true voltage and it's charging my battery fine (IMG:style_emoticons/default/smile.gif) Exactly the same behavior on mine... |
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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 screenguy914 Unless cranking the engine, system voltage should ... Mar 9 2015, 07:43 PM
Ansbacher Yes, I was reading volts from the center console g... Mar 9 2015, 07:54 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 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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