Chances are not the temp sensor. It could be a thermostat or a hose that has a leak. And the one you dare not want it to be is a crack head.
you could have abad temp sensor
The temperature of the water will vary on any vehicle with speed, including on the Taurus. The more an engine runs, the higher the water temperature will be in the radiator. If the radiator is overheating, then there could be a malfunction with a temperature sensor, a leaky hose, or damage to the radiator.
Many things could cause that: blown fuse, bad relay, corroded wiring (if you live near sea water or in the North), bad temp sensor (have to have a scantool to check it), or the following.. First are you sure they should be going? They go based on the temperature sensor reading. Are you overheating? If you are not overheating don't worry about it. If you are overheating check your coolant level first. You could have air in the system that would cause it to over heat. If you have air and you haven't taken the system apart in the last month, find the coolant leak.
the Intake Air Temperature Sensor (IAT) could also be called the Manifold Air Temperature Sensor (MAT) some instances they are both.
The coolant temp. sensor could be bad....or the thermostat could be stuck shut.....there are a few things it could be actually
could be several things. 1st is the car actually overheating. If so then it could be a stuck thermostat or a bad water pump. If it is not really overheating my bet would be a falty temp sensor. The temp sensor is what actually tells the light to turn on.
Overheating from the engine wears down the sensor and will go out when it gets to hot , after awhile it could be completely degraded to where it wont work anymore
Could be because of overheating - some motherboards have cutoffs when it reaches a certain temperature Simply adding an extra fan could solve the problem Could be because of overheating - some motherboards have cutoffs when it reaches a certain temperature Simply adding an extra fan could solve the problem
If it's overheating only in town, but running fine down the highway, it's probably that your radiator fan isn't coming on. Could be a bad sensor, relay or fan motor.
Could be thermostat opening and closing adjusting to coolant temperature Could be a bad temperature sensor
Is vehicle actually overheating? Could be a bad temperature sending unit or gauge Check temperature with a thermometer If thermostat does not open vehicle will overheat
take it to a local shop that reads codes for free... could be a sensor is out