Date: 08 Feb 2003 15:52:07 +0200
From: Simo Melenius <siolnanopsamfi>
Subject: Alternator going?


Hi! I have a -90 model Saab 900i16v, it has had no charging problems before. For background, it was this winter the first time that the alternator warning light sometimes came up in the morning, especially when it was very cold. It went off again after a few minutes, especially if revving over 2000 rpm for a while. Googling this newsgroup I found out that it's quite normal and forgot about it for a few weeks. (To make sure, I also tightened the V-belts a bit, as I was going to change the belts in the summer anyway.) Now, today, the alt warning light went on during driving. Just for a couple of minutes. The light was pulsating randomly, sometimes being dimmer and sometimes brighter. I think that these events, in general, are a signal -- the charging system will eventually fail: if not sooner then at least later in the near future and probably at a very inconvenient time :-) The car is 12 years old and has 230 000 km in the meter and still running the original alternator, and these things won't last forever. >>> Question: I'm a car novice but my first guess would be the brushes. Does that sound probable to you? I've heard they're pretty tricky to replace so should I try obtaining another voltage regulator and replace it all together? Also, what are the most reasonable places to do tests in order to isolate the possible fault? thanks in advance, S -- 0110011001101111011011110110001001100001011100100010110101110000

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