Air idle control valve location

Pull the wires off of it and if the temp guage goes to 0 or full red bar then that is not the coolant temperature sensor.

Idle Air Control (IAC) Valve
The IAC valve, mounted on the throttle body, controls idle speed by regulating throttle plate by-pass air. IAC valve includes an air by-pass valve and idle speed control solenoid valve. The air by-pass valve is affected by the engine coolant temperature and functions during cold engine conditions less than 122 °F (50 °C). The idle speed control solenoid is controlled by PCM and works throughout the entire temperature range.
On some models, idle is controlled by idle speed control air by-pass valve. A throttle air by-pass valve is a solenoid-operated valve controlled by PCM. The valve allows air to by-pass throttle plates to control cold engine fast idle, no-touch start, dashpot, overtemperature idle boost and engine load idle correction.
Air by-pass channel carries idle airflow regulated by air by-pass valve. Air by-pass valve is controlled by PCM to adjust both cold and warm idle speeds. Air by-pass valve uses solenoid valve to vary idle airflow volume allowed to enter engine

Idle Air Control (IAC) Solenoid
Solenoid is by-pass air type. Ensure ignition is off. Disconnect IAC solenoid harness connector. Set DVOM to 200-ohm scale. Measure resistance between IAC solenoid connector terminals. See Fig. 3 . Solenoid has diode. Connect DVOM (+) test lead to terminal VPWR and DVOM (-) lead to terminal IAC.
Resistance should be 6-13 ohms. If resistance is not as specified, replace solenoid. Faults in IAC solenoid or circuit should set a service code. See QUICK TEST in appropriate TESTS W/CODES article in the ENGINE PERFORMANCE Section. If no service code has been set, see CIRCUIT TEST KE in appropriate TESTS W/CODES article for additional testing and specifications.