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SportTrac Discussion
Electrical
Alternator Dying-Updated 1/1/11
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<blockquote data-quote="scott degroot" data-source="post: 943757" data-attributes="member: 66039"><p>All you need is a multimeter that has an amp setting on it. Disconnect the negative battery cable, take one of the mutlimeter leads and clip it to the negative battery terminal and take the other lead and clip it to the negative battery cable...now you are seeing how much amperage the system is drawing. When you do this make sure that all the doors are closed, the keys are out of the ignition and that the underhood light if you have one is unplugged. If you watch the meter when you first connect teh clips you will probably have about a 1.5 amp draw that should drop rather quickly, now go grab a beer and come back in an hour and see what teh meter reads, if it's anything over .050 amps you have an issue. At this point if you suspect the alternator then completely disconnect the alternator and start the process over.</p></blockquote><p></p>
[QUOTE="scott degroot, post: 943757, member: 66039"] All you need is a multimeter that has an amp setting on it. Disconnect the negative battery cable, take one of the mutlimeter leads and clip it to the negative battery terminal and take the other lead and clip it to the negative battery cable...now you are seeing how much amperage the system is drawing. When you do this make sure that all the doors are closed, the keys are out of the ignition and that the underhood light if you have one is unplugged. If you watch the meter when you first connect teh clips you will probably have about a 1.5 amp draw that should drop rather quickly, now go grab a beer and come back in an hour and see what teh meter reads, if it's anything over .050 amps you have an issue. At this point if you suspect the alternator then completely disconnect the alternator and start the process over. [/QUOTE]
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SportTrac Discussion
Electrical
Alternator Dying-Updated 1/1/11
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