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Miscellaneous Automotive
Car Performance & Repair
Alt showing 12 volts while car running
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<blockquote data-quote="njaykaplan" data-source="post: 6256051" data-attributes="member: 577496"><p>I just tried replacing the alt with a junkyard alt basically, off a car with 70k miles, just to work temporarily and it works slightly better than my old one. Puts out power about 1600 rpm, old one didnt work until 4k rpms. Would a bad ground affect the batterys charging ability? I dont have too many grounding options, since everything else is bolted to something that gets up to 150-200 degrees and huge bolts. I just upgraded the factory ground locations with 4 gauge from 8 or 10 gauge. They were really rusty bolts though, none looked good to me, and i forget how to check resistance in a ground location. Any advice? I'm going to get a new alt tomorrow hopefully and test, although i'm going to try replacing the pigtail connector on this first</p></blockquote><p></p>
[QUOTE="njaykaplan, post: 6256051, member: 577496"] I just tried replacing the alt with a junkyard alt basically, off a car with 70k miles, just to work temporarily and it works slightly better than my old one. Puts out power about 1600 rpm, old one didnt work until 4k rpms. Would a bad ground affect the batterys charging ability? I dont have too many grounding options, since everything else is bolted to something that gets up to 150-200 degrees and huge bolts. I just upgraded the factory ground locations with 4 gauge from 8 or 10 gauge. They were really rusty bolts though, none looked good to me, and i forget how to check resistance in a ground location. Any advice? I'm going to get a new alt tomorrow hopefully and test, although i'm going to try replacing the pigtail connector on this first [/QUOTE]
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Alt showing 12 volts while car running
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