[glatt]

The thing that jumped out to me with the data from this "stall" was that the voltage was fluctuating a little bit on this trip in a way that it doesn't normally. Almost like the alternator is flaking out on me.

Here is the data from the trip when it *almost* stalled. At the point of the green arrow, I was stuck behind some slow cars, and felt the engine stumble. Because I was still moving, I didn't want to shift into neutral and give it gas, but I also couldn't give it gas without rear ending the car in front of me. It almost stalled, and in fact the oil light even came on because the engine was going so slowly the oil pump wasn't pumping hard enough. A couple other lights came on too, but they all went out a moment later. When we came to a light and stopped a couple blocks later, I shifted into neutral and gave it some gas throughout the red light. I repeated this behavior for the next couple minutes of the trip.