I replied on another thread with a related problem. 1989 travelcraft class C with a 460. Drove fine one day, nothing the next. Turns out we were not getting the lip signal from the distributor. This we fixed by replacing the entire distributor. Its easier and cheaper, i am still having issues getting it back operational. Good luck. 20 bucks at AutoZone for a plain distributor, wish noe i would bave sprung for the more expensive one, as i believe thst my new one may be bad also. Isbthe tfi module on yours mounted on the dizzy or remotely?