Seem to have solved this problem with a new ignition coil. Tested the old one using this method:

Good Coil Test:

I tested the primary resistance (between the positive and negative posts) and on my good coil it read .001 ohms, essentially nothing.

I tested the secondary resistance between any of ...

A half day of diagnosis today did not turn up anything more. I would like a sanity check on something though.

The google search for MAP sensor testing turned up this paragraph:

Regina Manifold Air Pressure (MAP) Sensor. The Regina fuel injection system uses air pressure and temperature in the ...

Hi Friends, long time lurker but first post. Thanks for solving so many of my past problems with the search bar.

Recently brought into the fold a 1990 740 N/A with auto trans and Regina fuel system. The car has unknown service history, but was obviously taken care of because of the shape its in ...