1993 Ford Aerostar won't start

I just bought a 93 aerostar oringal owner took very good care of it it started right up after sitting two weeks in below freezing weather. I drove it home shut it off went back out later it started fine. The next day I went out poped the hood and checked fluids then closed the hood kidda hard. Got in and it would't start it just turn over souds like theres no fuel getting to the engine. Could slamming the hood closed make the inertia fuel shut off switch go off and stop the fuel pump?I put a heater to the enginething it was a frozen gas line but still wont start. Do all 93 aerostars have that cut-off switch?Do you have any idea what else it could be if its not the switch.