It took me a year and many unnecessary parts before I discovered the reason for my issue. It would act like the ignition was shut off for a half second, then catch again. It mainly happened when temps were below 50F and above 3500 RPM's. Once I replaced the harmonic balancer, I never had a single issue since.
I discovered I scream the same way whether I'm about to be eaten by a great white shark or if a piece of seaweed touches my foot.