My fusion is a 07 SEL with the 2.3L I4, 5spd. My issue is when I sit at a still in traffic for longer than 5-10 sec my coolant temp gauge turns of and the engine fan engages. However once I get the rpms back up to 2000, the gauge stats working again, and the fans turns off. Im woundering if the temp sensor is bad, or if the themostat is sticking. But it doesnt run hot or overheat wich makes me believe its a sensor. Whats your opinion? And if it is the sensor where is it located?