it doesn't seem to do it during idle or it may be to suttle at that time!!
What will cause my vehicle to sputter during exceleration? on 1990 Nissan Pathfinder
Any problem that would effect fuel delivery, or ignition could result in the symptom. Quick things you can look for would be damage (tears) of the tube between the vane air meter and the throttle body, or arcing of the spark out of the plug wires. You will likely need a technician to road test this, experience the symptom and start testing to prove what is going on.