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Q: van will stall out after driving for about 20 mins. on the highway. on 1990 Plymouth Grand Voyager

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
has to cool down before restarts
I would suspect an ignition module, pretty common. When they get old, they will fail as they get hot and then work again as they cool off. That is where I would begin my inspections for this problem.
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