Replace the sender for your temp gauge (I believe it's one on bottom of thermostat housing). Also, disconnect the connector on top while the car is running and the fans should kick on fairly soon afterwards. If they don't, then it's a probably a problem with the fans or their relays. If they do, then maybe replace the sensor on top of the thermostat housing. Get a working temp gauge soon, it's vital with these cars or any car for that matter.