165 won't keep idle and killing batteries

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165 won't keep idle and killing batteries

Postby 91Atrac » Mon Aug 03, 2015 6:11 pm

Anyone have ideas?

I've changed 3 alternators with no difference in idle.

Ideas please
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Re: 165 won't keep idle and killing batteries

Postby underscore » Mon Aug 03, 2015 6:32 pm

Have you confirmed the charge is getting from the alt to the battery (it battery reading 14V while running)? The 100A charge fuse might be bad.
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Re: 165 won't keep idle and killing batteries

Postby 91Atrac » Mon Aug 03, 2015 7:02 pm

No I haven't. Don't know how to do that. I use a multimeter?
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Re: 165 won't keep idle and killing batteries

Postby underscore » Mon Aug 03, 2015 9:07 pm

Yeah when running the battery should be at the same voltage as the alternator output. Alternately you can measure the resistance between the battery positive and the alternator output, it should be a short between them.
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Re: 165 won't keep idle and killing batteries

Postby 91Atrac » Tue Aug 04, 2015 12:03 am

Alright. Tomorrow I'll give that a try
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Re: 165 won't keep idle and killing batteries

Postby 91Atrac » Thu Aug 06, 2015 3:53 am

Turned to be a faulty alt fuse. Was welded to the board and we replaced it a bit sobehow.
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