I have a buddy whose 95 z28 with 6sp will intermittently cut out when you are driving it. You will be going along and it will kinda of buck and you lose all power for a second then the next second it will be fine. It doesn't do it at an idle but will do it at anytime will you are drving. anybody have suggestions on what might be the problem.

 

What did he check so far? I would think a bad plug wire or ignition coil

 

the opti is brand new, the plugs are new, new fuel filter, new coil and icm. I dont know what could cause this.