Where is the temperature sensor on a 2007 Holden Captiva?

Many engine designs have the coolant temperature sensor screw into the thermostat housing. In the case of this model Captiva, however, the sensor screws into the inlet manifold next to (but not part of) the thermostat housing.

A temperature sensor that is sending the wrong information to the car's computer can cause all sorts of mayhem, but it's worth checking the sensor for correct operation before spending money on a replacement.