Loosen the belt on your alternator after it's warmed up..see what happens
Loosen the belt..run it on the street until it hits temp..and just drive normal..stop and idle at lights or pull into a spot,go to reverse, back up ...those were most of the times it quit
With a good battery, the alternator field windings can be disconnected and the vehicle should still run, UNLESS there is a problem between the battery and the alternator that the alternator is back feeding. Current follows the path of least resistance. 68 years old, 30 years in engineering and 25 years owning a classic car restoration and repair business. Brush up on electronics 101A and Mopar charging ignition circuits. I'm done
