I have read alot on this site with similar problems. My 97 TJ with the 4.0 automatic shut down on the drive home. I got it started and drove home and it will not start, but crank all day. It has a new crank positin sensor and a new cam position sensor and a new coil. I have replaced all the relays and checked all the fuses in both PDM's. I have cleaned and checked all connnections. I have good power and ground to the ECM. The gauges are working and there are no fault codes. The fuel pump does come on and there is pressure in the rail. No spark out of the coil and the black/green wire going into the coil only has power for about 2 seconds. Don't know if its the ECM or not. Any Thoughts would be helpful.