I just bought a 1995 SC 5-speed. The car appeared to be misfiring and I pulled the following codes: 176, 177, 542. I replaced the wires, plugs, oxygen sensors, and fuel filter,and drove the car 5 miles. No codes are present but car still runs like it is misfiring / or has a loose wire or something. I checked wires and made sure they are where they should be. I really do not know, but am willing to take it to a mechanic. I live in St. Louis, Missouri. Does anyone know of any reputable mechanics near St. Charles or Maryland Heights? Thanks.