The diodes are the electronic part of the alternator that convert AC voltage to DC. Switch your multimeter to the lowest AC setting and reattach the test leads to the battery. With the engine ...

How Much Does It Cost To Replace an Alternator? About $450. Your author has rebuilt and replaced alternators, but in later years I've discovered that having a pro do it is a better use of my time.

Or diodes can burn out if an older voltage regulator allows spikes in current to run through them. Now, if you happen to be a mechanic, ... replace it, and reassemble the alternator.

Here's how to test for a bad diode with nothing more than a decent digital multimeter. 1. Set the meter to read "AC VOLTS" (lowest range). 2. Connect the black "COM" lead probe tip to the battery ...

Fiat Chrysler Automobiles (FCA) has issued a recall for 9558 vehicles across its previous-model Chrysler 300 and Jeep Grand Cherokee lines over concerns a faulty alternator could cause the engine ...