the best solution is to replace the transmission, trying to repair internal problems without considerable knowlege and experience usually ends up being more costly in the end. besides idividual part prices for internal parts add up to much more that a remanufactured unit in general.
Put it into reverse when moving rapidly forward.
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.
The forward pump is shot or the throttle has a blown gasket
Sounds like you have a busted linkage somewhere
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.
If you have an automatic transmission, it probably has a forward clutch/band problem.
ignition will be turned off and keys left in ignition, transmission placed in park (automatic) or reverse (manual), parking brake set, parking lights/emergency flashers on
Needs internal transmission repairs. Find a good shop.
reverse drum inside of trans is stripped out the fix is teardown unit and replace with abeast drum from transtar
The shifter. D is for drive which is forward and R is for reverse. N is for neutral. You have to have the breaks pressed down all the way in order to move out of park and into D or R.
In an car with an automatic transmission, you should be fine not using the parking brake. In one with a manual transmission, leaving the car in gear should suffice, but it can be hard on the transmission to do so. If you are facing downhill, leave the car in reverse. Alternately, if you are facing uphill, leave the car in any one of the forward gears (1st through 3rd-6th depending on what you top gear is).