My 2003 Hyundai XG350 began to lose power and stall out while driving. After 5-10 minutes, it would start and drive for about 15-20 minutes and stall again. I had a diagnostic done and the code for faulty crankshaft position sensor was given. I drove it to the auto shop and had the sensor replaced then the car would not start. They removed the new sensor and replaced that one but the car still will not start. Does any one have any ideas at all as to what can be the problem?