89 jeep wrangler wont start

When using starter fluid, remove air induction to the throttle body and spray a 1 to 2 second burst directly down the TB and promptly start.

Also a flooded engine will not fire, even with starter fluid. Pull a plug and see if it's soaked with fuel. If the plug appears dry and there is spark and it won't fire on starter fluid directly down the TB, then most likely the spark is too weak. Inspect cap and rotor for erosion. Look for signs of carbon tracks on the cap and the coil.

Check the ignition timing as it appears that the firing order is wrong. Make sure that the cam shaft is turning as it could be the belt broken

Absolute pressure sensor

FUEL PROBLEM ! make sure its getting fuel to engine. spray a bit of starting fluid in throttle body. if car starts then dies, its a fuel problem. good-day !

your fuel filter might be clogged. take it off and see if you can blow thru it.....if theres any resistance, you need a new one. it should be easy to blow thru . yes USE your mouth , and yes it taste bad. but thats how ya fix it

Spray some starting fluid into the throttle body. If it starts then you have a fuel problem. If it does not, then check to see if you have spark to the plugs.

Sounds like u have a fuel problem. The engine is not getting the fuel it needs thats why when u spray the starting fluid in it runs then dies when it burns it up. check the fuel pump and see what kind of psi your getting.

I would suspect the crank sensor, but it needs to be verified when it wont start.

remove the air filter housing from the throttle body, or if its mult-ported injection, remove the large air duct. Do this the night before. The next day, before cranking and having a spray can of carb. cleaner, spray a couple of shots of carb cleaner either into the large air duct, spray towards the engine, or if its single body injection, spray directly on to the throttle body.

Crank engine immediately, preferrably have some one else sitting in the car to start it after you spray.

If the car even tries to start, replace cold start relay.

I need to confirm some information. The engine is rotating, just not starting, right? When you put the key into the "on" position, do you hear the fuel pump prime itself? You'll hear a hum sound for a couple of seconds. If not, spray some starting fluid into the throttle body and see if the engine starts. If it does start with the starting fluid, then shuts off again, the fuel pump or the fuel pump relay is bad. I'd change the relay first, if that doesn't help, the fuel pump is bad.