Well, when i step on it lightly to keep to speed in town(s) it likes to sputter and the

rpms like to fluxuate, its not bad yet, but very annoying. I gave it an all new tune up before it started doin this: all new plugs-wires-fuel filter-fuel pump. Mechanic says it might be

fuel pump, but i dont understand it could be that when wife and i put a new one in along

with sending unit end of last summer. There is no engine light coming up and mechanic

said that when hooked up to tester, no codes show up.