Hello again... more problems with my car unfortunately While i was driving it around, I heard a "click" sound and then I looked at the temperature gauge, and the needle had completely bottomed out. I stopped and poppe dthe hood, the main coolant hose and the radiator were plenty hot. Now, when I put the key in and turn all the electrical systems on w/out starting the motor, the needle on the gauge will drop down a tiny bit (1-2mm)even when the car is completely cold.

Help, what is broken??