Icm module
 

I have a 88 mustang gt 5.0 . Every place that a buy icm module it’s different than the motorcraft E6SF-12A297-A1A that I originally had, and they don’t work in my car, why is this ? I’ve bought everywhere, last was from rock auto the part was motorcraft DU2Z-12A297AA , that’s what there book says it takes. But doesn’t work. Anyone have an idea why? Thanks

You posted this in the 2010-2014 sub forum. You may get better responses in the fox body sub forum. Good luck on finding a solution.