So I flushed the coolant, started the car, drove it, drained coolant, re-filled, started, shut off...then repeated (flushing). Then the car would not start. Cranks, but no start. Noticed I spilled antifreeze on crank sensor. Replaced crank sensor, car started, then shut right off and will not re-start. Have 1.5 VDC at crank sensor connector. 3.0L Vucan. I never had a car not start after a coolant change, so I'm lost here. Seems that I lost spark.----UPDATE. The self healing properties of this Taurus kicked in. After sitting overnight, the car started in the morning. I don't know that this should make me happy.