My 1997 vw cabrio highline doesnt have a spark. It turns over but just won't start. I checked and it looks like the distributor and the coil aren't getting a reading from the computer to spark. I'd rather not buy a computer if I don't have to, but does this seem to be my only option? I looked at it and it didn't look burned out or anything. I've already replaced the fuel pump and the ignition coil.