Drewlahr

Just curious t o see if anyone knows what's goin on here. 95 jeep cherokee 4.0 in fifth gear just cruisin along, barely on the gas and the motor shuts down only briefly though then starts back up. Only on one episode did it not want to start back up. So I put it in third and pop started it. Not to sure what might be goin on. It doesn't just slowly die out like as if running out of gas, or starving for fuel. It just instantly shuts down. Any help would be a big help. Thanks