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2005 LS430 Possible Alternator Problem.


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Howdy. The voltage in normal running has been slowly dropping over the last few months from about 14.3, now down to about 13.3 to 13.5 volts. Turning lights on and loading it up makes no difference.  Battery voltage when not running is normal. It still has about 14.2 when first started, but drops as it warms up. Might this be the regulator on its way out, and can that be replaced, or is it likely the alternator itself is getting a bit ancient, like its owner? Is the regulator built-in to the alternator, or is it separate? Is it likely to completely clap out any time soon? How easy, or difficult, is it to replace? I haven't noticed any strange noises from it.

Cheers, Keith.

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