Ford EEC one-dimensional parameters are typically referred to as "scalars." These are things like engine cid, idle speeds, injector sizes, rev limits, and so on; a small sampling shown here.

The 1986-1993 Ford Mustang’s EEC-IV has the capability to manually test for codes. Not just that, but you can also check the Continuous Memory codes that are stored in the system.

The 1986-1993 Ford Mustang's EEC-IV has the capability to manually test for codes. Not just that, but you can also check the Continuous Memory codes that are stored in the system.