I have an 87 300D that wont start.

See the following for a history.
http://www.peachparts.com/shopforum/diesel-discussion/315931-87-300d-no-start.html
I am starting a new thread because, on the last thread, people seemed to zoom in on the mechanic's lack of knowledge.
I am starting a new thread, hoping that someone can overlook the issues of the shop and the mechanic, and assist me in getting my car back on the road.

1. Does anyone know if the Mass Air sensor will suddenly and unexpectantly cause the car to die going down the road, and then not start?
2. The mass air isnt getting the 3-7V that is should. Does anyone know what supplies the voltage to the Air Mass sensor?

I plan on putting 5v to the mass air sensor tomorrow, to see if it I can get it started. If it starts, I need to find out the source of the problem.
Thank you very much for your assistance. I am quite frustrated with this problem, and would like to keep my car from going to the junk yard. If I sound harsh, please forgive me.

I am getting voltage to the fuel rack on the IP, I have elimated the fuel filters, mechanical fuel pump, egr valve, EDS, ALDA.
I dont have any pressure coming out of the IP, (even after replacing it). I suspect that something is keeping the IP from passing fuel through it, I just dont know what.

Once again, thank you very much for your assistance.