Rd92xj

Ok I'm new to this,
I've had my cherokee for about 3 years now and blew the motor and replaced it with a 93 4.0. I had some issues after that had to fix, the iac and had a misfire, I pulled plugs #1 and #2 and found that #2 had no gap, i replaced and tried to start and it wouldn't. I then threw parts at it like a crazy man but still nothing so I bought a PCM from rockauto and it started and ran for about 5 minutes and shut off.

From then on it would start every morning then shutoff and wouldn't start back up until it cooled off. That went on for a week and now it won't start at all. It cranks and cranks and cranks but won't turn over. When it would die the fuel gauge would spike over full and it would get no spark, now it's just no spark at all. I know I have the fuel pressure because when I hit the pin on the rail it shoots out like a water hose. I've replace the cps and the coil and the fuel pump and the distributor.
Someone please help have to get my xj back up and running soon