2001 Hyundai Accent Car stopped while driving

I was driving my vehicle and it just stopped, I still had power but it was as if my engine was not responding. It would no longer gain speed, in fact it lost speed and I had to pull over. It took some time while I was in school and have recently replaced the camshaft position sensor, but it has been almost a year now and I cannot get the obd tester to even find a fault code any more. Long story short the vehicle still will not turn over, please help.