How To Use A Multimeter To Test Car Alternator. Start the car and look for a reading of between 142 and 147. Turn off your engine and grab the multimeter.
If you have a multimeter then this is how to test a car alternator with a multimeterThis is a well-known technique to test an alternator these devices are very important and it is good that you have a multimeter available. Testing the Alternator with a Voltmeter. Insert the probes correctly.
Start the car and look for a reading of between 142 and 147.
Measure the Base Voltage of the Battery. A cheap multimeter or a voltmeter will be able to test your alternator without hurting your engine. First make sure that the vehicles battery is fully charged. Set your multimeter to DC volts.
