How To Test Internal Voltage Regulator On Alternator

A good alternator should maintain battery voltage between 13 9 and 14 8 volts 14 2 is optimum.

How to test internal voltage regulator on alternator.

A voltage regulator controls the alternator voltage output to maintain a preset charging voltage for the battery. A voltage regulator will limit the maximum amount of voltage from a power source and prevents a device or alternator from shorting and overheating. Signs of a bad voltage regulator in a vehicle include dimming or pulsing lights or a dead battery. If you have electrical equipment that won t turn on that could.

Greeny on february 16 2017. Even worst case with all. There can be many reasons for a lack of charge. Alternator failure voltage regulator stator problems slip rings worn out etc but make also sure your battery still can take the charge check the alternator belt.

Without a voltage regulator an alternator may put out up to 250 volts. In todays video we cover how to diagnose a first gen ford alternator and test the alternator or voltage regulator. 01 test voltage across the battery terminals with the engine running. Tools used in the video volt meter.

The voltage regulator is built into the alternator on all chevys made from the 1980s to at least 2010. Without a regulator the battery would receive upwards of 30 volts of power while charging which would quickly damage or destroy your battery. It also controls electrical power to the vehicle s different electrical systems. Simply put the regulator restricts the amount of voltage being sent to the battery.