lack of power in engine while u fully stop then try to move with full accelerate it move slowly u don't feel the engine power but about high speed none a problem it close on 180km/hrs and the speed limiter begin working.
Well someone on here wil know the codes and will tell you. Here is my advice tho check to make sure the air filter is clean the fuel filter has been changed in the last 12,000 miles. Maybe check the spark plugs. Basically give it a tune up.
answer to your question. I also have a 1995 GT they have 2 OBD1 and OBDII connectors in the car confusing to say the least. If you look near the heater core/ac next to the roght fender you will see the OBD 1 connector use that instead of the OBDII connetor i had the same problem with the codes. A mechanic friend told me about it never had problems with the codes since. GOOD LUCK