My Sienna van (1999) with 85,000 miles has an odd problem. Only on long trips the speedomoter and odometer both suddenly go out and the check engine light goes on. After about a half hour of continued running the speedometer and odometer come back on and the engine light goes out. This has happended about 5 times. The cruise control is the only other thing affected. It too dies. Otherwise the car continues to drive just fine. Any ideas?
Monday, December 18th, 2006 AT 10:57 AM