replaced eec relay computer and fuil pumpany one have an answer

You need to see what you DON'T have: spark or fuel.

well we need more description of what has been checked, did you try cellunoid or starter, sometimes negative battery cable can be corroded so bad it needs replaced check where the cable connects to the starter if it is frayed replace it.

Do not ever ask this question without saying you've already determined that you have sparks and fuel pressure.

Crank the engine, and check for spark. If you have spark, spray wd-40 into the throttle body and see if it will start for a sec. Unless the engine compression is low on all cylinders, the engine just needs spark and fuel to run.

My suggestion is to the dealer because it could be so many things. My Continental would not start one day no sound from the fuel pump nothing just turned over but no attempt to start at all. It was the module for the security alarm system which is all factory nothing weired all original so u see it could be the damnedest thing & l would have never found that problem l would have spent a fortune on guessing so my advice is to cut ur loses & get it to a dealer or garage with the proper diagnostic equipment.