I'm translating a List of codes FoMoCo used with EEC IV Based OBD 1 systems. Some codes in the list will not apply to Aerostars, but all of the available Aerostar codes will be there. I'm not sure of year Aeros began using OBD 1 Technology, but it was same year they went to Coil Pack Ign. systems. That's what '90- '91 '92 ?
I'll include how to use FoMoCo's STAR feature and your analog VOM to read Data Transfer Link at diagnostic port under the hood near M'Cyl. It's time consuming and I have another life beyond My affection for these incredible Vans this site is about, so be patient guys. Thanx.
CIAOL
reading & translating OBD 1 codes without a scanner 
