We test the alternator to visually and physically monitor the performance of the alternator. Alternator noise that is a big indicator that something isn’t right. If there is a problem with an alternator bearing you may hear the alternator whine and make a squealing sound which comes from the front of the car, which becomes louder with more electrical accessories using power at the same time. We can also use our sense of smell to test the alternator if things are really bad. If you notice a bad smell coming from the car battery (mostly resembling rotten eggs) this is a sign that the alternator isn’t operating properly. This pungent smell is caused by the car battery (namely the electrolyte) if the alternator is producing too high voltage. The battery acid starts to “boil” inside the battery causing these bad-smelling vapors. 

Our Test are done with both Multimeter and Voltimeter measuring the load voltage and the Non Load Voltage.