Sorry for the confusion, the ORIGINAL problem was the tach not working and the tranny not working. I learned that the problems were connected. I knew absolutely nothing about this system when I started. Truth be told, I still don't know 1/10th.
I had tried cleaning, torqueing and then replacing the magnetic pickup on the fuel injector pump. Then tracked down fuses, cleaned grounds, checked plug connectors. The problem remained, intermittently. Sometimes she worked. Sometimes she didn't. Very frustrating. Especially when you get everything loaded up for a camping trip and she didn't run.
When I replaced the TECA, yesterday, the tach worked and the E40D worked as good as it ever had.
I appreciate this FORUM immensely!!! I, truly, would have been lost without it.
You guys rock!