engine will not stay running after engine is hot

What is your question?

after driving the car around running errands the engine will turn over but will not stay running, after letting the car sit for about an hour the engine will start and runs great. don't get a check engine light. I did change the crankshaft sensor car was fine for about three weeks have the problem back

What makes this problem better or worse?

only happens when the engine is hot like driving around town, i changed the crankshaft sensor about three weeks ago

How long has your 2004 Subaru Forester had this problem?

about three weeks