fuel interruption problem on 2000 Subaru Forester

My forester tends to cut out when cruising at speeds from 45-70 mph. Nothing happens during acceleration, but once I hit the speed I want it will start to cut out, not stall, but it feels like I abruptly took my foot off the gas but I haven't. What could be causing this. There are no lights on the the dash and no codes in the computer.

Asked by for the 2000 Subaru Forester