Stalled and terrible driving performance

Stalled and terrible driving performance
1993 VW Eurovan stalled, will not start

More info to come here on my 1993 VW Eurovan that stalled and had terrible performance recently. Initial assessment indicates that a completely dead auxiliary battery could have been creating a strain on the electrical. I will be performing some test drives and further testing. After disconnecting the auxiliary battery and charging the main, the EV was able to start immediately. I need to take a short test drive (with a bike inside just in case).

UPDATE: Since the aux battery was disconnected, the EV has been running and starting better… and stayed running. But when I replaced the O2 sensor, performance also improved. At this point, I may still have a vacuum leak, exhaust manifold crack (I know it exists, but haven’t see or resolved), and might just need timing/tune up.

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