93 Saturn part 2

Not the MAP sensor, not the plug wires, no vacuum leaks, not the throttle position sensor, not the engine coolant sensor, not the EGR.  son of a bitch I went through every damn diagnostic the manual suggested.  Including testing the oxygen sensor for voltage.  It checked fine.  But apparently the SOB is bad because when I started the car with it disconnected the hesitation stopped.  I am cautiously optimistic this is the problem.  I didn't give it much thought initially because it was replaced last year to get through emissions.   Even thought I could probably run it without the sensor, I will replace it. 
Keep this one in the 'troubles' category until I see if it works with a new one.