1995 Ford F-150 Engine shuts off and restarts (sometimes) wh

Over the last several months my F150 engine dies while driving. I can be doing 50mph, the check engine light comes on, everything else keeps working but the engine dies. Sometimes it automatically comes back on within a second. A few time it completely dies and I have to pull over try for several minutes to restart it. I turns over with plenty of power but the engine will not start. It has been to the Ford service center 3 times in the last 2 months and they cannot get it to replicate the fault, and there is no code in the computer. They tested the fuel pumps and said they were fine. I also changed the plugs, wires, cap and rotor last month. They also did a throttle body overhaul and injector cleaning and replaced the ignition switch. The truck has two fuel tankks with a selector switch in the cab. It does not automatically switch between tanks, I have to select front or rear. It doesn't matter what tank I am on, the problem has occurred while running on both of them. The truck also has an aftermarket alarm and remote start system installed. I quit using it a long time ago because it keeps trying to start the truck even when it's already running.