1996 jeep cherokee sport

Your description is too vague to give specific advise. However, if you are stating that the engine turns over when you turn the key but it wont run, then you want to check a few possibilities. Fuel, Spark, compression. Make sure the engine is getting fuel. Then check for spark at one of the plug wires. Then check cylinder compression. No fuel can be a fuel pump, plugged filter, or pump electrical connection, like pump relay or wires. Spark problem can be ignition coil, coil pack, distributor module, distributor points. Compression can be piston rings, valves, head gasket. This is not everything, but it may help you!

spark box or coil pack going out. one day it just wont start anymore

In a 96 Jeep not many sensors are involved. Basically Fuel and spark delivery at right time should start car if your Starter is able to crank the Engine.
If engine is cranking then the battery is Okay. Check Spark directly at the spark plugs and fuel pressure at the fuel rail. You may pull out one spark plug and check spark out of engine.
Try spraying Starting fluid in Air Intake while cranking. If Jeep starts then not enough fuel is being delivered by fuel pump. If you find no spark at plugs then check circuit for starter relay, Crank sensor/cam sensor problems.
A kill switch or bad Alarm system can also cause this problem.
Here is the Elec Diagram:
http://www.alldatapro.com/alldata/PRO~V451756054~C28087~R0~OB0~P4R0H~N/0/41746574/56418469/56418476/56418477/34853741/34864081/56251052/56251070/55276088/76721401/58958330/57479434

I’m happy to assist further over the phone at https://www.6ya.com/expert/uttamjeet_2f3adc18600f8ede

Have you checked to see if the spark plugs are fouled or if you're getting any spark at all?

didint it start after yo replaced the parts or before.

well first off if is a 1996 i am almost 100% sure it doesent have a carb on it. and if its not getting gas u should try changing your fuel pump and fuel pressure regulator. hope this helps u out, good luck to u

Need to try the crank shaft position senor. It work off the turning of the crank. It the sensor goes bad then the engine has no idea what position the crank is in, so therefore you won't get it to start. I had to replace a few of these on Jeeps , this is a big problem for Jeeps.

Sounds like the ignition coil is getting bad.

Great...glad to hear it's up and running!

Non-adjustable timing.

Firing order 1-5-3-6-2-4 ------------- front | | of | 1 2 3 4 5 6 | vehicle | | Distributor rotates clockwise ------------
The Spark Plug Gap .035 (In thousandths of an inch)