Tips on how to Examine the Output of a Chevrolet Alternator

Start the vehicle. If it doesn't start off, attach the battery pack to the battery. Try and start the . If the automobile still will not commence and you know the battery is dead, charge the battery together with the charger for at least six hours.

Set the voltmeter to 20 volts. Touch the good battery terminal using the red lead. Touch the negative battery terminal with the black lead.

Read the output of the alternator. In the event the voltmeter is putting out 13.5 to 14.5 volts, the alternator is properly charging the battery. Test the alternator further by turning on all the lights and the heater. The voltage should drop for a second or two, but should go back up to no less than 13 volts. If not, the alternator is charging, but not well.

Turn off the Chevrolet. Hold the voltmeter's red lead on the positive battery terminal and the black lead on the unfavorable terminal. Have a helper get started the vehicle while you watch the voltmeter. If the volt meter drops below 10 volts, the alternator is not putting out enough amperage and should be replaced before it quits completely.