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Lack of proper charging from the alternator... 140-160

uid 14369's pic
posted by  KLR142 on  Sun Nov 5 18:06 CST 2006
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last visit: Mon May 9 12:44 CST 2011
[RELATED]

My '68's always had a battery killing issue(sit for more than a couple days and it'll be dead or close), and a charge light being on until I rev it up a bit on the initial start-up...

Anyway, just recently got around to hooking up a voltmeter to the battery with the car on...

My findings as of today while looking at it again are:
-Depending on idle speed(800rpm or so) the car is NOT charging the battery at all, basically sitting around 12.2V, which is what it was with the car off. The charge light comes on if I let the car idle any lower than that(didn't check voltage at the lower idle though). If I raise the idle speed to around 1000-1100rpm, it goes to about 13V... If I rev the engine up a bit more, it'll plateau at 13.12Vish...

All of which is abnormal, I know.

Is there something I should check before I toss on the alternator from my old wagon? That one I needed to rev up a bit sometimes before it would properly work, but it at least did from what I can tell.
--
Kyle - 142, 145, and 244! - Oregon Volvo Tuners?






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