When fuel gauge read eighth of a tank engine shuts off, will restart a few minutes later

I recently purchased this van, and is a good van so far, but for some reason, when the gas gauge shows around an eighth of a tank, the van will suddenly shut off. If I pull over and wait a few minutes, the van will start back up and drive for a few more miles, before shutting off again. This process will go on long enough to get to a station, or at least out of the immediate way of traffic, but both analogue gauge and digital fuel miles display will read that I have at least an eighth of a tank. Is this some kind of recall on the van, or maybe it's not adjusted correctly? Any help would be greatly appreciated