Does anyone have an idea regarding 1996 Mitsubishi Galant VR6?

What is the OBD port being used I or II? its port diagram? I tried scanning the ECU with AutoXray EZ Scan 5000 but the scan tool says the vehicle is not responding.

The problem started with the Check Engine light turning on while I was driving on my way home, and then suddenly theres no power with the car it can only go up to 2500rpm at 5th gear. After turning the engine off and turning it again usually the engine wont start. After a while the engine will start, and the engine Check engine lights disappears when I rev it up to 4000rmp and after a few minutes of idling it lights up again?

Any advice with the scanner and trouble is welcomed..


Thanks...