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You need to check the small connector that plugs into the back of the alternator. One of the pins will have a power supply when the ignition is in the on position. It could be 12v or 5v so a voltmeter should be used to detect it. If no power check fuses. Possible bad charge fuse or wiring to the alternator. If power supply is there, possible faulty alternator ( even though it's new )
Bad voltage regulator. Usually built-into alternator. Start car and unplug battery, if it dies your alternator is dead. Get new alternator. If car keeps running, get a voltmeter and check voltage coming through - should be higher than 12v but less than 18v. Any other number means your voltage regulator is dead, cheaper to get a new alternator.
That suggests that the problem is in the harness, something in the connector or wiring is causing an open circuit. You will need to have the circuit tested to find the fault. Ford alternators have known connector issues & new aftermarket connectors are readily available at most auto parts stores.
have you had battery tested if battery is bad or weak the alternater will not charge properly also check cables for tightness and cleanliness as well as top of battrey check all connections at alternater and there might be a fuse or relay for charging system that is not functioning properly
i believe there is an issue with the positive battery cable.. cable coming from the battery to starter..alternator gets feed from starter battery post..i have seen this problem before..check battery feed to alternator..if 12v is not at alternator main feed wire(large wire)..it will not charge..you will need positive cable from battery to starter..i hope this helps
Yes, your regulator in the alternator is probally bad and burning to battery up. You can over charge the battery, and boil the acid out of the battery.
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