pretty much what happens with my car is ill be driving it and the speedometer is working and randomly it will just stop and go to 0 and the odometer and trip stop as well. the auto trans shifts smoothly and everything else works. no check engine light has ever came on and same with any other warning light. The thing is the speedometer works but just randomly it will cut out or if i also sometimes just start the car it won't work and i drive a little ways it will work and then stop once again.