Thanks Bill, We have pulled the insulation back from #5 cylinder wiring and re-soldered a bad frayed wire, but the problem persists. I am going to wrap the ignition coil with electrical tape and get a hotter plug. Also a friend suggested sparkplug thread gel and top cap gel to help the transmission ...

I have a 1997 960 with 183,000 mile on it, and has run just fine until last week when I suddenly got a misfire while driving on the freeway. When I stopped for a short time the misfire went away. This has persisted for the last week and is driving me crazy as I have replaced all plugs and ignition c...