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Hi,
The temperature sensor itself is locate just in front of the Thermostat Housing, which is just in front of the throttle body.
But the system is a little more "complex" than that, as the sensor feeds the PCM (Powertrain Control Module), which controls a series of relays, which in turn control the cooling fans. So depending on the issue you are having (fans always ON, OFF, or wrong speed), then you or someone else will have to troubleshoot the cooling fan system.
I have included a link that describes the system to assist you.
What else can I help you with?
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