Wont Start, Dies, Help ! 1995 GT-5.0

[Year2001Boogie]

Yeah the car seems like it wants to start, just goes grrraa rraaa raa raa raaa, but It never get to vrrroom!

The car is automatic, ......What is the MLPS.

Also forgot to mention I have had the entire fuel system also changed, from having the tank emptied and clean, to running all new lines & filters
(luckily its still under extended warrenty until 2005)

A couple of times that it didnt start in "N" .... (I have no idea how the logic behind this one & how it works, but it started everytime) If it doesnt start in "N" I will simply put my foot out the door and push it forward or backwards, maybe a couple inches, I crank it up, & it starts.

I tried that because another person I know had the same problem but with a Buick LaSabre, same identical symptoms, he finally found a mechanic that fixed his problem, it was the
"Crank Sensor", so the brain surgeon that I am I took it in to get the crank sensor changed on my mustang also..... well come to find out it doesnt have a crank sensor, & the mechanic wasunable to find the problem.

Thanx for you replies!
Much appreciated!