Eresuncabron

A couple of days ago, right before i had to go to college, i got a code 4 (crank position sensor) turned it off, then on again, then, I drove 3 hours and the car was fine... and for acouple more days it was fine... now it's givin me **** again....
help me please...
whats the trouble shooting procedure/do i need a whole new distributer?