Charging problems - 2002 9-3 SE - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Charging problems - 2002 9-3 SE
Posted by WiscoSaab [Email] (more from WiscoSaab) on Mon, 22 Jun 2015 09:01:41
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This started with a slow cranking engine and eventual dead battery. I began by testing the voltage at battery. Showed that I was charging. I replaced the battery. Problems continued. I found that the alternator was only charging when engine was cold. I replaced alternator & serp belt. Now I'm getting a battery light when running. This goes away when heavy acceleration, but only while at med-high boost. I tested the exciter wire voltage and its really low, <2. When I disconnected the exciter wire the battery light goes out. So I assume the wire is fine. WHAT TO CHECK NEXT? (The cables all look good. All fuses look good including the fuses at the battery. Not sure if related, but I am also having some AC issues, fuel gauge dipped once while driving with battery light on.)
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