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Q:

Car dies driving down the road on 2003 Hyundai Santa Fe

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
the card idled a little roughly, but then riding down the road it died, engine light came on, but, wouldn't start again. After sitting for an hour or so, car started and was able to get it home
(1) Answer
If the check engine light is on, there is a code(s) stored in the engine control module. With a handheld scan tool you or a shop will have to read the codes and then perform the appropriate diagnosis to determine the cause of the problem.
If can you get the codes and post them here, we can possibly offer some more advice.