2003 Hyundai Santa Fe Q&A
2003 Hyundai Santa Fe Question: Car dies driving down the road
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. - Bret Bodas
The crankshaft position sensor may fail, causing engine stalling or a failure to start. Replacement or the failed sensor will commonly correct this problem.