I have a 97 jeep wrangler with 70 thousand miles on it my wife took it shopping and it wouldn't start when she came back out .
So I replaced the pump and fuel regulator then I replaced the assembly then the cap roter wires plugs all the relays the coil then the distributor all the fuses then the computer . Now I am thinking it's the ground for the computer I haven't gotten a code yet from either computers

Does it crank? Check all the fuses? I have seen similar problems with Jeep models and dirt and junk getting in the shift lever assy. The switch does not close and it won't start.