Re: The Baffling Battery - Saabnet.com Bulletin Board
Installing an amp meter inline with the battery path and pulling fuses one-by-one is the preferred technique for isolating parasitic drains. Note that you should not leave the meter inline with the car running or you have a good chance of blowing its internal fuse under high current loads. In your son's case, I would bet on a defect in the ACC controller (maybe it's leaving the interior sensor fan running forever) if that's the fuse that made the difference. The electronics in our 9000s are now 20+ years old and subject to flaky connections, i.e cracked solder joints, and component failures.
In Noel's case, I would test for parasitic drains before replacing any cables.
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