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Unread 12-10-2012   #1 (permalink)
cpthawk99 is offline Apprentice

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Default Alternator or battery?

So I have a quick question, I have had my optima yellow top for about 3 years now and I think it might have been used when I bought it. I'm wondering if it's going bad or I should get a new alternator. I have some bass in my car so of course that'll make everything dim. But it plays good for about 2-3 min then starts dimming everything. And also I can sit at night with my headlights on, if I press a window switch or something similar I can hear and see the rpms go down a little bit :?::?::?:. It'd that's good when the rpms go down by hitting a window switch or console light. Also sometimes it almost dies when I start it up. Start it gettin up to 1100 rpm then drops to 3-400.
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Unread 12-10-2012   #2 (permalink)
SoCal2V is online now SHELBY GT 350 Member

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Sounds more like alternator. But, the only way to find out for sure is have them both tested. Honestly both could be bad - if the alternator is weak the battery has been taking up the slack. FWIW, Optima batteries don't live up to their hype or price tag anyway. Have it tested, replace if necessary (my hunch says 'yes') and go from there.
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Unread 12-10-2012   #3 (permalink)
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Ty for your quick response cal you've always been there for me haha
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