I have a 1990 B350 Van with a 360 and 4 speed auto,(Not sure what model as of yet.) I had a problem with the ECM and changed it out with one from a 1990 Dodge W250 with a 4 speed Manual Transmission.. The van started right up and shifted fine, just wouldn't go into overdrive. So I took it for a drive yesterday,I have no reverse, and it wont coast in neutral.. Would this have anything to do with changing the ECM? As I said the one I replaced it with was from a Manual Trans Truck, so Im figuring it has no transmission control capability since it was from a manual truck.. It may be a coincidence that it happened not long after changing ECM.. What are your thoughts? Thanks