Engine stalling or failure to start may indicate crankshaft angle sensor failure; Hyundai issued a recall (03V030000).
Problems for specific Hyundai Santa Fe years:
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Repairpal verified 2002 Hyundai Santa Fe problems
The crankshaft position sensor may fail, causing engine stalling or a failure to start. Replacement or the failed sensor will commonly correct this problem.
The timing belt can fail prematurely; if it fails while driving, it can cause catastrophic damage to the engine. Be sure that the timing belt is inspected and replaced according to the manufacturer's recommended schedule.