Hi,

I see this is your first post on the Brickboard.
Welcome.
Yes in deed you found a very long post to sift through. It is saying 102 posts.
If you come back on here A LOT you can find a few of us that still respond.
I don’t know any history with you or the car unless you got it from a past Brickster.

Right off the top you are looking at trying to blame the electrical side of things when you shouldn’t.
These cars are more simple than you might think but it’s true they can still have faults.

You need to keep your troubleshooting simply down to the basics of the combustion triangle.
Heat, fuel and air.
A car not starting or hitting even one cylinder can be a slipped timing belt. You need compression and spark to get in there at the right moment.
The car will hit even without an AMM or a coolant sensor there. It’s called limp mode for a reason.

You need to say you have spark and you do that by taking the coil wire off the distributor center and placing it a very short distance (4mm) from a stud above the strut. Prop it there so you can crank the car.
This helps eliminate other components right away.
There is a CPS, that’s known to fail and an item that’s located in behind the battery that fires the coil.
It’s in a place that receives NO maintenance EVER and it is a middleman to the whole affair.
The connector on it should at least be unplugged and reseated out of good measure if you have Sparks.
These items should work even if you don’t have a timing belt. On older 200 cars that isn’t the case.
JUST Verify you are having spark as it has to be a number one priority.

You should hear the fuel pump turn on when you first turn the key to number two position. They should run about one second and turn off. This helps verify that you have a working fuel system relay working.
That relay located behind and under the glove box.
It turns on the injectors and the AMM. These relays have on two sides and one side can fail and do, even with a clicking sound and pumps. There are ways to check its operation if you live on the Brickboard more.

Take the oil cap off and crank the engine and make sure it is turning the cam inside. Observe, crank and see if the lobes moved if you don’t have a helper.

Using a fair amount of ether or starting fluid into a vacuum hose port is a fast and dirty way spot something is not working.
Pull the plugs to see if they are wet or not with gasoline and look for deposit color for condition of the engine.

I need to break away now but stay with us and your car can be fixed.

Phil