Coolant Temperature Sensor

The coolant sensor is located in the cylinder head of 3.7L engines and in the intake manifold of most 5.2L engines. The 5.2L engine with 2-barrel carburetor has the coolant temperature switch in the charge temperature switch location on the intake manifold. The coolant sensor informs the SCC when the engine has reached a pre-determined temperature, so proper adjustment can be made in the air/fuel ratio. It also prevents changes until such temperature is reached.