hello , i need advice. I have volvo d13 , when i am runing i have voltmeter gauged changing all the time , from 13.3 to 14.3 . And another problem is that when my truck is off after 20 minutes low battery protect alarm in sleeper starts to beep ( it happens only when my fridge and other electric devices are charging) . But i start truck very easy . When i take a contact with keys voltage is 11,7 to 12,6. I changed batteries and belts on alternator before 2 weeks . And alternator is good . Do you have any ideas what it can be ? Thaks
Voltmeter gauge changing all the time, from 13.3 to 14.3
Discussion in 'Ask An Owner Operator' started by Dorde89, Apr 16, 2019.
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Bad wire or a loose connection.
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Could be that broken eyelet connector that’s screwed to the alternator. Helped a Volvo driver with this at a truck stop once
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Does the truck have a battery cut off switch? It's just above the batteries. They tend to build up resistance and cause the problem you describe. Like other have suggested look at the ground and hot wires.
Jacoooooooo and 86scotty Thank this. -
I have a question - did you test the voltage at the batteries?
I mean take a cheap volt meter and see what you are getting at the batteries.
Also how old are your batteries and if they are new or near new, then did you have them properly tested? -
Op
Make sure that your alternator is also putting out correct amps not only voltage..
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