I had those symptoms when my Mass Air Flow (MAF) sensor was begiining to fail. I didn't have the Check Engine Light go on until the third or fourth incident.
A little later I had a problem with my evaporative emssion system and needed to replace a hose and check valve. I don't know whether the two problems were related.
Are you "topping off" the tank after the pump cuts off? If you are, you might want to stop doing that and see if that helps.
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2000 Arctic Silver/Black, Hard Top, On Board Computer
PNP Rear Speakers, HAES 6-Channel Amp, Avic Z140BH,
Painted Bumperettes, 2004 (OEM) Top, Homelink integrated in dash with Targa switch, 997 Shifter, Carrera Gauge Cluster with silver gauge faces, heated 997 adaptive sports seats, Litronics, silver console
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