The 94 will have the OBDI computer but may have a 16 pin ODBII connector. (The connector is under the dash by your right knee). If so, take a small paperclip and short pin 5 and 12, counting the upper left as pin 1. Then turn the key to on but do not crank. Then watch as the codes from the seperate computers are listed on the speedo display. If it is an ODBI connector then it will have fewer pins. Haynes manual has detailed instructions for that one. I can get it for you tonight if needed.