Compression is too low for cold start with gasoline but ether(quick start) should cause it to fire.
Contrary to the Movies it takes a bit of heat and a spark to ignite gasoline, compression heats up the gas so spark can ignite it
Only exhaust side coil works when starter motor is on, intake side spark starts when engine does.
'89 2.3l will have compression ratio of 9.0:1 so you should expect bout 160psi, that's with 1 spark plug removed from each cylinder to get good crank speed from starter motor.
But even if all spark plugs were in I would expect above 120psi with good battery and starter
90psi could mean timing belt is loose or off by 1 tooth
Firing order for coil packs here: Ford Ranger Firing Orders
If you have intake coil wires reversed then it could cause engine to stop once it comes on line by firing at the wrong time.