Why might a 2002 Hyundai accent engine light be blinking a few times then stops while driving?

Well i would think it was an electrical failure of some sort poor connection of sensor/s maybe if you disconnect battery earth lead hold down horn and switch lights and anything else on in your car hold down horn for minimum 2minutes then reconnect battery this will wipe all of ur ecus memory so if it continues to blink after this then look for loose wiring or corroded or poor connections to one of your sensors

important if u do this u may need to get ur radio code as ull be locked out and reset ur clock