My 1997 Golf K2 2.0 4 cyl. 5 speed manual; sudden onset bad misfire/almost a dead short in and out while driving: inital codes were cam sensor, misfire #2. I have replaced the wires, plugs, rotor, distributor,crank sensor coil, 02 sensors, and coolant temperature sensor. Nothing has helped, still exactly the same. Any suggestions before I replace the main computer?? It has no cam sensor, why giving me a cam sensor code?