My Chrysler cuts off while driving. Why does it keep doing that?

This could be a multitude of possibilities. I have seen this many times and sometimes it takes a scan tool and a drive with it to diagnose. But from my experience more often than not it is the crankshaft position sensor. They fail intermittently and will cut out when they get hot. http://m.oreillyauto.com/h5/r/oap/site/c/detail/BWD0/CSS48/02807.oap?year=2000&make=Chrysler&model=Sebring&vi=1365241&ck=Search_crankshaft+position%21s%21angle+sensor_1365241_2397&keyword=crankshaft+position%21s%21angle+sensor

Could possibly be the camshaft sensor (inside distributor). Essentially the ignition is being told by the computer to turn off. Make sure you're getting 50 for your fuel pressure and then you'll need to use an oscilloscope in the wires that attach to the ECM. Using the cam and crank ports, both with ground, look for variations in the waveform as the car runs. That should tell you which one you need. It wouldn't hurt to have the timing checked out and the plugs all switched out when you do this.