The first thing I would do would be to get the trouble codes from the computer. The vast majority of '95's were EEC-IV/OBD-1, so you can likely get trouble codes with nothing fancier than a paper clip. not sure why Ford couldn't get trouble codes, is it possible they thought your '95 was OBD-2/EEC-V and were trying to get codes from the under dash OBD-2 connecter (which is almost always non-functional in '95's)? The EEC-IV self-test connectors are under the hood, driver's side.