I think I've run into this before. The O2 sensor signal wires are exactly opposite between the 94 and 96!! 94 - Rt bank Tn/Wt wire; Lt bank Bk/Dg wire; In 96 - Rt bank Bk/Dg wire, Lt bank Tn/Wt. This will make the computer try to richen and lean opposite sides... Login to read more.