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Old 05-16-2008, 03:22 PM   #1
Scooby Newbie
Member#: 28953
Join Date: Nov 2002
Location: San Mateo, CA
2003 WRX

Default Battery or alternator problem?

So about 6 weeks ago, my car wouldn't start. After cleaning the clamps and battery posts, checking water levels and hooking up battery charger for couple hours, the car started and ran fine. I had been checking my voltage at the battery and alternator about every 5th day in the morning and after the car has warmed up, reading consistent 12.21 in the mornings and about 13.75 at warm idle.

Yesterday it had a VERY hard time starting.... just couple slow turns but then it started. Car runs fine once going, so though alt is under 14 i think the alt is ok. After I got it home, I let it sit overnight and checked voltage again... 12.15. I turn the key to "on" without starting the car, and the voltage went way low about 10.8. No accessories were running, just the seatbelt beeper.

Any thoughts on what might be the problem? (completely stock car, with a 2 year old aftermarket radio and bazooka tube)
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