Re: faulty Battery or alternator? - Saab 900 Bulletin Board - Saabnet.com
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Re: faulty Battery or alternator?
Posted by compaqted (more from compaqted) on Wed, 14 Aug 2002 07:55:43
In Reply to: faulty Battery or alternator?, Giovanni, Tue, 13 Aug 2002 18:09:54
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I agree with Bill U. It is probably a grounding problem. The main grounding point is on the crossmember below the radiator, just next to the battery. Remove the bolt, clean off all the connections, and the mounting point, then reinstall. Coat with Vaseline.
Also check the grounding wire that comes off the alternator and attaches to the alternator mounting bracket.
If this doesn't help, remove the negative battery cable, and lay it to the side. Attach an ammeter (set to AMPS!), and connect the red lead to the positive post on the battery, and the negative lead to the removed negative battery cable. If you see a draw registered on the meter, you have a short somewhere.
It could be the alternator itself. To check this, remove the wires from the back of the alternator. If the meter no longer registers any amps, then the alternator is internally failing and needs to be replaced.
If the meter still shows AMPS being drawn, then remove each fuse in turn until you find the circuit with the short, then trace it down from there.
posted by 161.114.8...
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