not alternator or battery, what else??

1994 MITSUBISHI 3000GT
187,000 MILES • 4 CYL • FWD • AUTOMATIC
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KAYLATRACEY1991
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I have a 1994 Mitsubishi Galant LS, and when I take the negative battery terminal off the car stops running, and I already replaced the battery and the alternator. What else could it be?
May 5, 2011 at 4:27 PM
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WRENCHTECH
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First off, don't ever do that unless you want to by every computer in the car. You need to test the charging voltage across the battery with the engine idling and no accessories on
May 5, 2011 at 4:45 PM
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KAYLATRACEY1991
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I tested the alternator and it outputs 15amps on idle.
May 5, 2011 at 5:43 PM
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WRENCHTECH
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That's not what I asked you to do.
May 5, 2011 at 5:52 PM
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KAYLATRACEY1991
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How do I test the charging voltage across the battery??
May 5, 2011 at 7:31 PM
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WRENCHTECH
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
You take a digital voltmeter and you measure the voltage across the battery between positive and negative. It has to read between 13.5 and 14.8 volts
May 5, 2011 at 7:33 PM
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