Here are some possible causes:
1. Warped flywheel.
2. Engine out of time.
3. Engine misfiring.
car starts but when i put it in gear it stop
transmission and gear box, also it might be u r having sex
the car goes back
the transmission is always in gear. if its not there is probably a stripped gear in the transmission.
If the brakes are out then you have no business putting it in any gear because it is unsafe to drive a car with no brakes.
Filling your fuel tank will not make your car shake, unless you got some bad fuel that was contaminated with moisture.
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.
if the car is an automatic, there is a problem with your torque converter if it is a standard shift the fly wheel may be out of balance
The car will not move when you put it in gear.
No.
put it on gear 6
you may not be at a high enough rpm