1999 Jeep Grand Cherokee Jeep won't start!

Hi Rpapon, welcome to 2carpros and thank you for the donation.

They all say that about the computer there is more money in it-when the fix relates to an ignition problem, no spark-when you are using the starter fluid.

Do below to determine if it is a fuel or spark problem.

Get a helper disconnect a spark plug wire or two and ground it to the engine at least 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem. Check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer.