2001 Mitsubishi Galant Transmission problem?

Could be a few things:

1. Low on auto transmission fluid; this would cause you to lose a few of the forward gears (reverse is used less often so its the last gear to go Start the car and add fluid to the specified markings on the Auto Transmission dipstick
2. Bad auto transmission fluid; Check the fluid, if its brown and gives off a burning smell, it needs changing along with the filter
3. Bad transmisssion; if neither of the above are true, then it sounds like the clutches have burned out on the transmission or the transmission itself is bad; if 1 or 2 hasn't solved your issue the car needs to be diagnosed at a reputable transmission shop; Make sure they lay out all of your options and if you decide to have a major transmission repair done, the Kelly Blue Book value on a similar car similarlly equipted in exellent condition is about $6,800 retail

I am having the same problem. What was the problem with yours? Was it just the fluid? or did the transmission go out?

Mine just did the same exact thing cruising at 75mph ... I took it to th tranny shop and he said the pump in the transmission blew and particles were everywhere in the transmission so it needed to be rebuilt ending cost... 2200$ :(

Im having the same problem. But will move foward if I step the gas pedal super slow. Since its the family car, I had the fluid drained yesterday. There was ateast 8 quarts in the bin. It seemed thin as water and was dirty black. Had it changed with 4 quarts only. Also did the throttle body clean and gas tank clean and even vaccum clean with Sea Foam. It burned alot of the accumulated carbon but its still sluggish. Wont go past 30 unless I go super slow. Maybe its a Sensor. In my case, I think the Catalyctic converters areclogged. Need to get that checked too.