I am having some overheating problems, thought it was the thermostat, opened and found it was stuck OPEN ?? I don't understand. In the mornings the car warms up fast.. too fast, less than 4 minutes and the temperature gauge is in the middle. The radiator fan is kicking in when the gauge is about 3/4.. This problem started when my A/C Compressor failed when driving on a highway.. any tips? Satoru Ohta 94 Tsuru GSR