How does the engine feel when this is happening? Mileage and history of the vehicle? All fluids in good condition? Engine oil, coolant, tranmission fluid?
Try some known good coil packs and update us. Sounds like a misfire, which is either injector or coil pack. Possibly cam or crank sensor, but these usually act up more when the engine is hot. Post pics on the condition of the spark plugs.