After I checked all the computer wires for continuity I put the freshly charged battery back in and did a KOEO test.
I got Code 22 -- 'MAP sensor input out of test range.'
This is with the old MAP sensor installed. For those who have not been following this story with bated breath, I did the Chilton manual test of the MAP sensor yesterday. The voltage across two terminals was suppose to change from zero volts at atmosphere to Vref of 5 volts at 20 pounds or so of vacuum. Well the old MAP sensor showed 2.5 volts at atmosphere and didn't budge at 20 pounds of vacuum, so I ran out and bought a new one.
I brought it back and stuck it in and tested it the same way and damn if the damn thing didn't read that same damn 2.5 volts at atmosphere and the same damn 2.5 volts at 20 pounds of vacuum and I felt like I just threw 70 bucks down the crapper. I pulled it off the car without trying to start the car with it and put it back in the box and figured I could try to sell it on ebay if Kragens wouldn't take it back.
So today, after checking all the wires and installing the battery and running the KOEO test and getting Code 22 -- 'MAP sensor input out of test range', I put the new MAP in and the computer liked it and gave it a big thumbs up and then I thought, "Oh, god... maybe it'll start!"
And it did, just like that. I checked the spray at the injector and it was fine and delicate like it should be at idle. The engine ran for 10 to 15 seconds and I shut it off, wanting to savor the moment and not wanting to push my luck.
The test procedure in Chilton's must be pretty much the same as in the Ford manual. lugnut hipped me to the fact that frequency plays a part in there somewhere. Whatever the proper procedure is for testing the MAP sensor, I may never know, but someone screwed up when the Chilton manual was written. Whether it's the same in FSM, I don't know.
But anyway, there it is. Now I have to clean up and test drive it and see if all the problems were caused by this one MAP sensor.