1999 Holden Commodore Repair Question
Topics covered: Alternator, Battery, Engine.
Mileage: 300,000 miles.
Mileage: 300,000 miles.
Asked on February 2, 2013
Holden Commodore Alternator Problem
How to check an alternator
Asked by (pending member)Answer
Replied on February 2, 2013
Use a multi meter and with it set on 24V or any setting above 16V probe main alternator wire with red lead(+) and place black lead(-) to a good ground you should have around 14.5 volts at a fast idle speed. Do not remove battery terminal while engine is running as you will get a voltage spike and possibly destroy the main ECU.
