What are the symptoms of failing alternator?

Create Date: Aug. 21, 2021, 2:01 p.m. (1)

There are a number of symptons of failing vehicle alternator. One of them is wining noise from failing bearing, booming noise from failing rectifier parts, low voltage below 13.0V from worn out brushes. Also although not common, sometimes over voltage of more than 15.0V is measured because of failing voltage regulator. Please note that this is for normal 12V battery.

Issue environments & Tags

#Cold start, #Operating temperature, #Cruishing #Electrical, #Maintenance

Tutorial

Low battery warning light Battery maintenance basics Battery voltage before starting Battery voltage after starting Alternator voltage testing in idle state Alternator over charging voltage testing at 2500RPM

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SunJoo Moon , Edit Date: Dec. 27, 2021, 4:47 p.m.