I have a 97 rover HSE w/124k miles. I'm having issues with the a/c. When I initially start the car, it shoots out cold air. The problem is that if the temp outside is 100 deg the indicator inside initially reads the proper temp. As minutes go by, the temp indicator starts to show that the ext temp is dropping and the cold air then becomes cool air. after some research of it's location and removal of the bumper, the sensor is missing. No wires, no bracket, no sensor. what do I do now?????