How Do You Test A Car Voltage Regulator?
“How to test a voltage regulator. On any car with an alternator you have a voltage regulator. And this voltage regulator is responsible for keeping the voltage on the vehicle from exceeding a limit. Usually this limit is thirteen point eight to fourteen point two volts. Which is enough voltage to allow for proper battery charging but not enough to burn out light bulbs or damage delicate computer circuits. The best way to test a voltage regulator is with a multi meter and what you do is you put your multi meter clamps directly on the battery terminals. Positive red to positive and black to negative and you set it to voltage. And with the car off you should have a little over twelve volts that’s a healthy battery. And when the, once you are hooked up you want to start the vehicle and what you’ll see is that at idle the voltage will increase. This means that the alternator is charging the battery. We are making about thirteen point eight, thirteen point nine volts. And so at this point wh
