Whats Causes a 94 Plymouth acclaim engine to stumble upon acceleration from a stop?

I have a 94 plymouth acclaim with a 2.5L 4 cylinder engine. Car has been sitting for about a year or so. I have been noticing when starting off from a stop the nose of the car will dip down and stumble to accelerate. Once the engine is warm it wont do it anymore. Only does it for the first 5 mins. Car will stumble on takeoff act like its going to die. Changed Dist cap/rotor on,spark plugs and wires and also fuel filter.Car has went through all old gas and put new in it with some gumout carb fuel cleaner put in tank. Also cleaned egr valve and such. Did get codes 12,32,55 Any ideas on what to do to fix this will be appreciated.