Doesn't the "fuel pressure regulator test" assume the car is running? Because you won't get any manifold vacuum if it isn't. So pinching-off the vac hose means nothing in my case.
However, I did a pressure test (after fabricating an adapter to fit the service port) by turning the key until I hear the pump run for 2 seconds. The results are 39-40 psi. Right in the range
Of 35- 41 psi for 1985 through 1990 civic dual-point injection.
FWIW, I have looked at 2 other civics in same year range, and none of them have a ground wire, or any other harness grounded to the thermostat housing.
BTW, I do thank you for your continuing communications. Eventually I'll find the problem, and it will no doubt be something very simple.

Yes, assumes engine is running.

Never give up!

HERE IS WHAT THE PROBLEM WAS!!
After thinking about how the car would start after sitting for a few days (and only run for a second), then smelling raw gas, I thought it must be flooding. I checked out a few other discussion groups on the subject : cleaning fuel injectors... (long story-short)... ohm tested injectors, both good. I pulled the wiring plugs from the injectors(both of them) and it sounded like it wanted to start!. dirty injectors stuck open?. Cleaned them in an ultrasonic jewelry cleaner (did not submerge ) filled with SEAFOAM, put them back in, and it has run great ! Mileage has also improved. Before, 28 to 33 (last tank before it quit, 25) now having run for 4 or 5 fill-ups, it's getting 35-37 mpg!
Something so simple! I hope this can help someone else keep it rollin' down the road.
P.S. If you have 150k or more, take your injectors to a shop that does "ultrasonic cleaning" and testing. According to one Volvo owner, that had used the high dollar "through the tank or rail" cleaners, nothing was as good as ultrasonic. You'll be amazed by the difference in before/after spray pattern

Great idea. My father has an ultrasonic cleaner and uses them to clean carburetor parts. They do an awesome job.

89civic hatchback starts sometimes but normally cranks acts like getting no fuel changed fuel filter and pump still same could it be map sensor 89 civic 1.5l

jugelcanah, I would replace the Ignition Control Module (ICM) and coil, if the Check Engine Light comes on for 2 seconds and then goes out, when the ignition switch is turned to ON (Position II).

MAP Sensors are extremely reliable and often expensive.