Cougar/XR7 V8-4.6L VIN W (1997)
Temperature Sensor (Gauge): Description and Operation
The water temperature indicator sender unit has the following features:
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Resistance is high when the engine coolant temperature is low, and low when the engine coolant temperature is high.
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The pointer of the magnetic engine coolant temperature gauge remains in position when ignition switch is turned to the OFF position.
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Pointer will move to the correct indication whenever the ignition switch is turned back to RUN position.
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Pointer may indicate at the top of the normal band with the engine coolant temperature within specification, under certain driving conditions such
as heavy traffic or stop-and-go driving in hot weather.
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It is mounted into the engine intake manifold.
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As the engine coolant temperature increases, the water temperature indicator sender unit resistance decreases. When engine coolant temperature
decreases, the water temperature indicator sender unit resistance increases.