Low charge when hot.

RustyRatRod said

Then I would check every connection to make sure everything is clean and tight. Beyond that, if you don't see anything obvious, the alternator or regulator could be suspect. Have you run a good load test on it? Like with an old style carbon pile tester?

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No, I don't have one.

RustyRatRod said

Then I would check every connection to make sure everything is clean and tight. Beyond that, if you don't see anything obvious, the alternator or regulator could be suspect. Have you run a good load test on it? Like with an old style carbon pile tester?

Click to expand...

No, I don't have a load tester. Best I can do is get the battery or alternator checked at an auto parts store. At idle I know the alternator would fail when the car is hot but pass when it's cool. I guess I could get another alternator since it's under warranty but I don't know if that would fix it.