Originally Posted by goodwin74
From time to time while shifting picking up speed, my car hiccups. It only happens once when i get up to around 3000 rpm. any suggestions as to what could be causing this hiccup?
While your problem description is a bit vague, most "hiccups" are intermittent misfires that can vary in duration and intensity due to things like engine speed, engine temperature and load. If it's severe and frequent enough, it should trigger a CEL.
First step, as always, would be to take care of the simple stuff: perhaps change and re-gap plugs (depending on mileage interval), check that plug wires are properly seated (at both ends) and look for obvious ignition wiring circuit problems (if a simple plug swap doesn't help) such as exposed copper or wire chafing, etc.