sounds like you need to replace the neutral safety switch. ignore the next answer i had the same problem with my 89 Ford Probe i just out it in park revd it up and it would go away but sometimes i had to hit the transmission with a hammer
Put it into reverse when moving rapidly forward.
Nothing if you are sitting still. However if you are moving forward and it is an older car, you may be replacing a transmission. Most if not all cars today with and automatic trasnmission have a failsafe to prevent going into reverse while going forward.
If a car jerks forward while in the break position it is not the Automatic Break System but rather the transmission.
Make sure transmission fluid level is correct Bad transmission pump?
the forward gear clutch pack is worn out. the only solution is to get the transmission rebult.
If it has an automatic transmission, it probably needs to be replaced or rebuilt.
The forward pump is shot or the throttle has a blown gasket
4 Speed Electronically Controlled Transmission. An automatic transmission with 4 forward gears and shifting that is controlled by a computer.
Sounds like you have a busted linkage somewhere
Needs internal transmission repairs. Find a good shop.
If you have an automatic transmission, it probably has a forward clutch/band problem.
If this is an automatic transmission, more than likely the transmission is on it's way to the junkyard. Usually failing transmissions lose reverse first, then the higher forward gears - last will be the lowest forward gears.