WoW, that's a tuffy. if it was one of the speed sensors i think the check light would come on. and if the electric clutch coil failed it would set off the light. my guess is either the clutch pack is not holding(witch should turn the light on), or the TOD computer has a fault. if you haven't yet, down load the shop manual from the downloads section here. there is a good troubleshooting section for TOD problems.