3 refurbished and finally EOM alternator for fix.

After approximately 10 miles of driving I see the following Voltage on my OBD2 / OBD fusion app; it reads between .5 to .8 V lower than my multi-meter at the battery. Voltage Usually is held steady at 13.5V with no loads and car on. With loads and driving voltage varies from 12.5 to 13.6 but not erratically. Lesson:: Do not buy rebuilt alternators. Voltage varies due to ECU input. Want to verify proper belt tension without a tension tool. For full story on changing the alternator on a 2012 Elantra limited, see link below to Hyundai forum. https://www.hyundai-forums.com/threads/not-the-battery-nor-the-alternator-or-its-regulator-then-what-and-hello-first-thread.661874/#post-5962894

Category