I am trying to troubleshoot a 1992 Nissan Stanza. The issue is that the car only has Park and Nuetral. When shifting into any gear the car does not move and the engine can rev just as the car is in Nuetral? The fluid seems good, but I am not sure where to look from here. I dont know if it could be electrical as it seems weird that all gears would be bad with no signs of noise or anythinjg. The car was just accelleration normal when the problem occurred? Any help would be greatly appreciatted.