Ok heres the deal My 97 ram 1500 5.9 4x4 was having surges in the transmisson around 60 to 70 miles it surged about 11/2 to 2 just driving. So i replaced the distributor wires spark plugs, bascially everything that belongs to the distrbutor. But it was still surging, a mechanic put a diagnostic computer on it and said it was my throttle body postioning sensor...So I replaced that and yet still doing it....Could this be the timing that is out of wack ?