Probably easier to post in your old thread. If I have read about this before, I don't remember... but I don't know any background on the car.
Have you changed the fuel filter? Is the fuel pump very noisy when you turn the ignition to 'on' ?
How many miles are on the car, and have you done the plugs and wires?
If it's not any of those things, It could also be the trans solenoid. They're known to go bad.