1999 Plymouth Neon

My check engine light wont go off, I replaced a blown head because the code reader said that was the problem besides the tale tale signs, my car was overheating and actually boiling. Even after the new head was installed the cars check engine lightr still wont go off and we even erased the code. The car also seems to be cutting out and feels like it wants to stall, could one of the sensors be causing this problem? Such as the crank sensor or the cam sensor and which and where are they located on the cars engine.