I am very frustrated by this and confused, my car had started overheating, I was advised to replace the coolant temp. Sensor. So I did that. Still it was over heating. I then replaced the thermostat, making sure I checked the ground wire! After replace the thermostat my started the first time, I turned it off and I went to start it again maybe two mins after turning it off and it wouldnt start, just a click and then nothing. All the lights and everything still work so it's not the battery. Can someone please help me, anyone have any ideas?