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No Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Tue, 13 Mar 2007 05:11:35
In Reply to: Volt Meter Question, Steak, Tue, 13 Mar 2007 05:01:10 Members do not see ads below this line. - Help Keep This Site Online - Signup |
When driving around, the voltage reading has everything to do with the alternator, and almost nothing to do with the battery. When the engine is running, the alternator provides all the power for the car, and recharges the battery. The voltage you read is a function of a lot of things - engine speed (faster - higher voltage), temperature under the hood(hotter - lower voltage) and electrical loads (larger - lower voltage). And the EDU isn't a precision electrical device - I've seen them off by as much as 0.4 volts either way. To be sure, try measuring the voltage on the battery with a known good voltmeter and compare. And that still doesn't take into account ground drops in the dashboard.
I wouldn't sweat it too much. If you see the voltage start to creep up more, check it with a voltmeter on the battery. If the voltage is indeed increasing, the Voltage Regulator in the alternator may be on the way out. 14.2 isn't an issue, but real voltages consistently above 14.5 or so can start to overheat the battery and start stressing electrical devices, starting with the bulbs.
But it might just be a case that the weather is warmer, and you aren't running the seat heater as much, the defroster less, maybe not as much headlight useage because it lighter longer. Those are all electrical loads (along with the blower moter set a bit higher) that will greatly impact voltage.
posted by 192.249....
, Tue, 13 Mar 2007 05:11:35 <-- Viewing This Message
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