Need to determine if you are missing fuel or spark.
If the fuel pump runs and the engine doesn't start, you should check for fuel pressure at the schrader valve on the fuel rail. Be careful. Best to do it with a gauge and you will need approximately 31 psi to start your 89. If your fuel pump runs and you don't have fuel pressure, your fuel filter is clogged or your fuel pump is toast.
If you have good fuel pressure, verify that you have a strong, blue, snapping spark which is necessary for the engine to fire up.
Without data, all you have is an OPINION!
Past Jeeps: '49 ******, '81 Scrambler, '88 Comanche
Current Jeep: 1999 XJ Sport, bone stock, daily driver.
I work on Jeeps!!