Replaced Starter Now Car Won't Start.

Hi all, I need a little help trouble shooting. The starter had been going out in the MPV for a while so I finally got around to changing it. After changing it the car won't start now.
It'll turn over fine now but won't start. Initially had no spark, so replaced the ignitor and then the distributor, got spark back. Now it fires but runs for a second or 2 then dies.
I have replaced the ignition switch, no change. Have tested the main relay next to the computer. It tests ok per facory manual instructions, replaced the computer twice with salage yard units. I have fuel pressure but don't know how much a friend tested it for me when is was out of town, he was trying to figure out the problem but he don't note how much pressure. I'm think about just replacing relay anyways just in case. anything else I need to look at.
Is there any sensor the need to be clean if the sestting on the computer go back to factory default settings? I had to do that on a Mitsubishi once.

Thanks