What is the sensor at the left front of the intake manifold ?

There's coolant in the intake manifold ? Anyways, the coolant temp sensor on this engine is on the right side not the left where this sensor is. And the wire is definiely Tan with a White stripe. That's what's confusing. There is no such colored wire in any wiring diagram I have seen.

According to 'Mitchell' the IAC is on the right, shows this to be on the front, and yes there is coolant in the intake, why would the thermostat be there if there was none. You have 2 coolant sensors. 1 for the computer and 1 for the gauges. Sometimes wire diagrams don't always match the vehicle.

OK, so it seems this is the coolant temp sensor for the ECU and the other one is the temp sensor for the gauge and the IAT is in the throttle body on this engine. Thanks !

The IAT is in the manifold on the right not in the throttle body.

There are no other sensors in the intake manifold except the two I mentioned previously. The only sensor with a Black/Light Blue and Black/Red wires going to it is the one in the throttle body. Theses wires are supposed to be the IAT sensor wires accoring to the wiring diagram I have.

Good Luck.