Battery keeps losing voltage

[95Batmobile]

OK... I'm on my 3rd alternator now...

My battery voltage just keeps dropping into the yellow and stays there for no damn reason at all. I am on my 3rd alternator and it is STILL doing it.
So either a) guage isn't reading right b) battery doesn't hold voltage for long periods of time c) got another bad alternator or d) some other crap is going on.

I don't know wtf is wrong, do you guys think I just got another bad alternator? When I leave in the morning after my car was off over night, the gauge shows HIGH voltage, like 14.5 or 15, then as I start driving it slowly goes down. After a while it reads slightly over 13. If I turn my AC on, it will be perfectly in the middle reading 13, sometimes a little lower.

I dunno whats up with my electrical system. When we replaced the alternator this time, I havn't been using my stereo figuring the excess current the stereo is demanding was frying my alternator so I havn't been listening to it real loud, except about 5 times total in a month. Other than that, it's been on real low.

[Original 4th Gen V6]

All I can say is that the same thing happened to me and I replaced my alternator and it was fine after that. I waited until the alternator completely failed though, and I am only on my 2nd alternator... Haven't had any problems since then.

[Camaro_SLP]

<blockquote>quote:</font><hr>Originally posted by 95Batmobile:
When I leave in the morning after my car was off over night, the gauge shows HIGH voltage, like 14.5 or 15, then as I start driving it slowly goes down. After a while it reads slightly over 13. If I turn my AC on, it will be perfectly in the middle reading 13, sometimes a little lower.
<hr></blockquote>

So what exactly is the problem? If it reads 13, than you are fine. You don't want it overcharged or undercharged. I believe 12.5 is around optimal range.

Have you just been replacing the alternator without dealing with your battery? It's possible your battery has gone bad. But if you are getting a reading of 13, even with your AC on, it sounds fine.

[95Batmobile]

Yeah when my AC is on its at 13 volts, but then after a while it drops and wont come back up.
I replaced the battery about 10 months ago... new AC delco.

[95Batmobile]

Well I just went out to start my car and the alternator sounds like a garbage disposal.
3 AC Delco alternators... none work.

Maybe it's time to try Bosch?

[Tellez]

I've had to change mine at least five times or even more and I've had the car for about a year.

[camaro_speedemon]

My friend had a problem like that on his 90 lumina. He kept replacing alternators, I guess he had a bad battery which was making the alternators fail. Try and look into your battery.

[StegsRide]

Yea i tell you what mine does that alot. it will drop into the yellow zone a little bit but never dies and it usually will go back up after a while. i mean i dont know if it is a real problem or not. mb you should try changin your battery. its just good maintenance anyway.

[95Batmobile]

Battery is 10 months old...