You can run an engine in/out of a car without a transmission. Car wont move and engine wont be mounted properly. So i suggest not to run an engine without a transmission unless you know what you are doing.
If your car won't move, your transmission is blown. If there is transmission oil underneath your car, you have a leak.
Transmission. Get out your checkbook.
bad transmission
When the shifting linkage is disconnected the car will appear to go into gear but not move. The car will not move when the transmission fluid is low.
The engine revs and car doesn't move.
In a car, a transmission system is needed because the engine does not make enough torque to make the car move.
Transmission has gone out most likely
The car will not move when you put it in gear.
they connect the transmission to the wheels to make it move
Well I have had that problem before, but I punctured the transmission oil pan and the car lost all its transmission oil, I have a 96 Altima, u might try checking the oil, I did and the car runs without it, it wont move.
Check transmission fluid level Perhaps needs transmission rebuild