Voltage meter showing incorrect reading

Discussion in 'Questions From New Drivers' started by Arannsingh, Aug 30, 2018.

Page 2 of 2

Aug 31, 2018 #11

AModelCat Road Train Member

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Jul 7, 2015

Canuckistan

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I had a truck with a spiking voltmeter. Tested voltage at batteries and alternator and it was still 13.8 volts despite the voltmeter pegging out at 18. Further testing revealed a rotten ground from battery to frame. So yes, start at the batteries and work your way through the charging system until you find your fault. Its usually always the basic stuff: shorts, opens, grounds.

AModelCat, Aug 31, 2018

AModelCat, Aug 31, 2018

#11

Farmerbob1 and x1Heavy Thank this.
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