I have a 2005 hydai sonata and it keeps on dying or shutting down and the check engine light is not on.What could the problem be?
Battery or alternator? Check ALL connections at the battery, starter and alternator. Make sure they are all clean and tight. If they are then have the alternator checked for output voltage.
To add to transam77,comment,check the fuel pressure all so,may be filter or could be weak fuel pump.