I brought a Mitsubishi lancer GLI coupe 1997. It was changed to automatic gear set from mannual. I drive it with no problem for 4 month. Suddenly I noticed that after starting the engine and driving like 500 meter the N light start blinking so I stop the car and again restart the engine I drive it fine for about a 1.5 km then again it start blinking. I feel car also get bit slow when it N light blink. After that when I restart I drive it long the problem gone for the day. This problem seems to occur everyday when I first start the car and goes away for the day when I made two to three restart. I took it to the mechanic but his machine can't read my car's computer. Can you please suggest what going wrong?