2003 Ion Quad Coupe Hard To Start At Operating Temperature

[SaturnIonQCVTi]

My 2003 Ion QuadCoupe's is hard to start after having been driven and the powertrain is up to operating temperature, then after having sat for a period of time (for example to run into the gas station) is when the issue is most reliably happens. Usually fires right up when cold. Has anyone run into this? I'm planning on taking it to my mechanic rather than firing the parts cannon at it

 

[Nutjob1]

When you state hard to start, is this a starter cranks the engine but engine won't fire up or dead silence - no starter sounds?

 

[Derf]

Classic presentation of a Crankshaft position sensor failing.