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Actually, a jump will help. That's how I found out the alternator was dead in my Hyundai. Battery light never came on.
When you get jumped, it will give you a few miles of drive time on older cars that don't have ass-loads of electronics to run. Believe it or not, an ECM/TCU and associated circuits can take alot of energy when you don't have much to give to begin with.
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"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
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