1995 Jeep Cherokee

Are you ready to do some testing? How long since a tune-up? Any applicable trouble codes? You should be able to access codes yourself, by cycling the ignition switch, on--off, on--off, on, you just cycle the key till the dash lites come, no further. The mil starts flashing, you count the flashes to get the codes, your looking for two digit codes.

When the problem occurs, if it cranks good but won't start, have a helper crank it, while you visually check for spark at the plugs. If you have spark everywhere, use a gage and check fuel pressure.

To check for spark, you can use a known good spark plug or spark tester, unplug spark plug boot, stick good plug/tester in boot, ground metal part of tester to metal part of engine, have helper crank, while you watch for spark.