Possible alternator problems? - Subaru WRX Forum
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#1 Old 04-02-2014, 08:23 AM
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Possible alternator problems?

So I've noticed this little issue for a couple weeks now. My headlights "flicker" almost, on certain days. Especially under heavy electrical load at a stop. (Rear defroster, ac condenser on) The flicker or dimming happens when I engage a turn signal, or anything of the sort as well as just normal driving. The other night while in a drive-through, the radio even turned off for a second due to lost power. Could this be my alt. getting ready to crap the bed? Is there a way to test it without ripping it out? Anyone ever had this problem?
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#2 Old 04-02-2014, 12:02 PM
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Advance Auto does a free test. I think Autozone may as well.
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#3 Old 04-02-2014, 12:44 PM
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While your at the shop have them test your battery as well. It sounds alot like an alternator issue but if your alternator is going bad that puts alot of stress on your battery, it may be worth money to drop in a new battery at the same time.
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#4 Old 04-02-2014, 01:23 PM
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Autozone can test it. Just bring your car there, they will hook it up and test the battery, then starter, then alternate all in a few minutes and tell you what's going on with those systems.
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#5 Old 04-02-2014, 01:24 PM
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Heard!

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#6 Old 04-22-2014, 03:00 PM
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Ok had my batt and alt tested. Alt was fine but batt at 1/4 life left. Today whilst driving home, car bucked (like when you turn on the a/c) and the abs light came on for a sec. Which points to loss/reduction of power. Does the electrical system pull power from the batt or alt? Would a weak batt cause this?

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