Temperature Gauge

The Engine coolant temperature is displayed by the Temp Gauge. The pointer of the gauge is moved by current flow through two Coils and is similar in operation to the Fuel Gauge. The Engine Coolant Temperature Sender has a low resistance at higher temperatures. It has a resistance of approximately 49.5 ohms at 123°C (260°F). Its resistance increases at lower temperatures and is approximately 1305 ohms at 47°C (100°F). This causes the current through the sensor to increase as the coolant temperature increases and the Temp Gauge pointer moves toward the hot end of the scale.