2000 olds silhouette: Engine rough at high RPM. Runs ok for a couple of days and then chokes' sputters and dies, then will not restart (cranks but no start) until left to sit for a long while (days/weeks). Replaced EVAP purge Valve, Cam shaft position sensor, starter (another problem). Thinking it may be either the fuel pressure Regulator, EGR valve, vacuum line, or Crankshaft Position Sensor? Emissions or fuel system, doesn't seem to be air, but don't know.
Jan 25, 2011 at 7:25 PM
