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Check the bridge diode circuit inside the alternator/generator. Sometimes, there is also a wiring harness/loom which is faulty for this kind of situations.


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Are you checking the voltage at the alternator output terminal? if not you could have a bad connection causing voltage drop. First test of voltage right at the alternator output(Make sure to ground to the alternator as well) if you measure 14 volts at the alternator you will have to test for voltage drop on the positive and negative. To test for voltage drop ...


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The alternator should show around 13-14 volts at startup. This alternator has an internal voltage regulator so it should be good to go as soon as it's installed. Check the terminals inside the connector and check the wiring harness for opens to rule out a wiring issue.


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If the engine's already running, disconnecting the battery will still keep the engine running. If you're trying to start a car without a battery or with a very dead battery, it won't start (even with push start in a manual car) because there's no electrical supply (spark) to the combustion chamber. The battery is a backup for extra electricity use in car (...


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