97 Nissan Sentra runs fine for about 2 miles then starts losing power and dies wont start back up for about an hour

SOURCE: Car Runs and Loses Power and Quits Running

Try cleaning the fuel pump filter. Under the seat behind the driver lift the carpet and you will find a round cover with six screws remove the cover. The fuel pump is directly below unscrew the retaining round plate and remove the pump. At the base of the pump is a small filter if it is covered in black muck that's your problem. clean and replace. job takes about 10 mins good luck. please let me know how you got on!

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SOURCE: Dies after running about 2 minutes

It's got all the symptoms of a leak in the fuel line. You may want to start backward at the tank and work your way all the way to the carb to find it but it would be surprising if it was something else. All the best.
Greg

SOURCE: 2002 Nissan Sentra Loses Power

SERVICE IT .....OIL PLUGS, AIR ,FUEL AND OIL FILTERS GET TROTTLE SENCOR AND THE MASS AIR FLOW SENCOR CHECKED

SOURCE: Ford 460 loses power then dies. Starts back up. Idles fine.

It sounds like you might have a clogged catalatic converter on the exhaust system.

SOURCE: My Nissan Sentra stalls then doesn't start

good day Sir, try to check the ignition coil and spark plugs i hope this tips will help you.