Nissan sir, my nissan bluebird wont go forward if i shift it to drive or 2nd, but the reverse is ok. pls help me? carl

It sounds like you are starting to develop a serious issue with the inner workings of your transmission, possibly with the torque converter. I'm afraid the only solution to this issue is to have a mechanic look at it, as you might be forced to rebuilt the transmission, or get a used replacement. Unfortunetly they are almost impossible to service yourself, so I would search for someone who can give an assessment and quote for repair, preferably someone who specializes