3 days ago car started up and while driving down the st. it died...no warning!

What is your question?

Car had gas; would turn over; acts like it wants to start but won't. New fuel filter, spark plugs ( get spark ) put on. Can hear fuel pump. Fuses appear ok. Checked for any bad connections...replaced Knock Sensor today...car continues to turn over and seems like it's going to start but doesn't. The car was starting and running fine before it quit...no prior symptoms. Tried auto scan and it reads "no codes found"...Any help? thanks.