I have an 03 800 Renegade, mxz chassis. I was running a rail grade at about 90 and the engine just quit on me. The speedo and tach stuck in place. When I pulled the recoil, it was froze solid. After waiting 15 minutes, it pulled like normal, the sled started and ran fine the rest of the trip. I have a temperature gauge that I look at often and it never got close to hot during the run. Any ideas???