1995 jeep cherokee starts but stalls right away is it a fuel pump or other problem

it wouldnt start if it didnt have fuel pressure so it may be safe to assume the pump is good. I would look into another problem.

Could it be a cam or crank sensor?

Usually if the crank or cam sensor isnt getting the rpm signal to the pcm it will fail to start. I really dont know much about a 95 I work on new mdoel vehicles mostly.

Found problem to be security system. Took dash apart unpluged it and pluged it back in and the Jeep started and runs. How do I do away with the security system. At its age I can only see more trouble down the road with it. Thanks