The sensor on top of the thermostat housing is the ECU's temp sensor. The sensor you are looking for is on the front side. Its somewhat difficult to see. There are two hoses that cross the engine over to the passenger side, one small and up high (goes to the tank) the other is thicker and down lower (goes across the exhaust manifold). Follow the thicker one back to the thermostat housing. With you looking at the engine, the sensor is to the left of where that pipe comes out, facing down at about a 45 degree angle.
