I noticed that my car speed meter droppped to zero once my food is off the Truttle
As I drive down the highway about a 100miles with my 2003 Ford Explorer (NBX), I noticed that my car speedometer dropped to zero once my food is off the Throttle. But once I return my leg to the Throttle, the car jerks and eventually, the car came to stop without moving even when it is on Drive, Reverse etc, The car rolls even when it is on Drive. There are some noise when put the gear on Park.