95 GMC sierra. Slow to accelerate when moving from stoplight
 

I have a 95 GMC sierra 5.7 v8 truck that has trouble taking off once stopped at a red light. Then gains power and runs good. It kinda feels like it wants to stall then I tap the gas peddle and it takes off. I changed the plugs and wires new distributor cap and roter. Fuel filter,throttle position sensor,and idle air control. It runs better and idles without stealing but legs when I accelerate from a stop.