Check the ignition control module.
The are no distributor cap on the 1997 Ford Expedition. You have eight coil packs one on each spark plug.
The ignition module that's in the distributor.
The 1997 Escort LX 1.9 does not have a Distributor cap.. the plug wires go directly from the coil assembly to the spark plugs.
Check the distributor. That is the most likely cause, or the crankshaft sensor.
firing order from spark plug to the distributor cap
Follow the spark plug wires back from the sparkplugs. If you have a distributor, that's where you'll find the cap. If you DON'T have a distributor, you probably have coil packs and don't need to worry about the distributor caps.
A bad spark plug, spark plug wire, distributor cap, rotor, fuel injector or burned valve.
check your crank sensor it might need to be adjusted or replaced
Does it turn over? Is it getting fuel? Is it getting spark?
I would start with replacing the spark plug wires and spark plugs (if you did not do that for a while). If does not help check the coils or distributor depending on what you have.
Spark plug, plug wire, distributor cap, injector, internal engineSpark plug, plug wire, distributor cap, injector, internal engine
There is none. The engine ECM signals each spark plug coil when to fire.