I had a low rpm hesitation that was caused by bad sparkplug wires. A couple of times it was so bad the car felt like it might stall when leaving a light or stop sign. Autolite Pros were in stock for $52 at Advance Auto Parts and they solved the problem. Might as well replace the plugs too, make sure you get the proper double platinum plug. Search here for the part number, I don't know it off the top of my head.
As Jim said you should do all the preventative stuff now if you don't know when it was last done.
