Hey just did about 800 miles with my check engine light on and my speedometer stopped at the same time. It happened about 80 miles into my trip. I monitored the engine and fluid levels during entire trip. All levels good and the engine had no abnormal noises. I just went over 97K and have about a 1000 miles left before next oil change. Had a complete tune up done last March at 87K.. Any ideas??? Later, Jay B Pensacola FL 91 Toy 92 Warrior V6 Auto 21 Ft