Two problems related to noises during shifting have been reported for the 1999 Honda Passport. The most recently reported issues are listed below.
When accelerating from a complete stop, as soon as auto transmission shifts to 1st gear at 30 mph, I experience such a violent, hard jerk that it is actually seen by people in other vehicles. This jerk creates a loud mechanical noise also that can be heard by people not in the car with me. This same jerking is experienced when decreasing speed to come to a stop, at approximately 15 miles per hour when transmission is shifting down. This problem has just started, I only have 29600 miles vehicle. This problem does not happen every time I drive the vehicle. Honda could not duplicate problem, therefore did nothing. It scares me, and my child because it is such a jolting violent movement.
When slowing down, the automatic transmission shifted into neutral, made a loud noise and vibrated. The vehicle was taken to two Honda dealers, who stated they did not work on transmissions. Vehicle was then taken to an independent mechanic. The transmission was rebuilt, and two days later the same problem occurred. The mechanic was unable to determine the cause of failure.