when driving and then speeding up( giving it some gas) i feel some slight stumble or hesitation in the engine, what could that be from? 166,000 miles on her, put recent plugs, wires, all egr sensors, fuel filter
Clean the MAF sensor in your air supply. Special cleaner from CRC products. My Taurus would stumble and hesitate on hard acceleration with fresh plugs and wires etc. Fixed her right up. Still check for Vacuum leaks too!!