An engine coolant temperature (ECT) sensor, monitors engine temperature and sends that information to the (ECU) in the form of, a voltage resistance.

The (ECU) uses this reading to calculate the coolant temperature, and from there adjusts the fuel injection, fuel mix, and ignition timing. Also, to keep this temperature optimal, it also controls when the electric cooling fan is switched on and off. Furthermore, this information is also used to send an accurate reading of the engine temperature, to a gauge on the dashboard.

Engine Coolant Temperature (ECT) Sensor, Monitors Temperature
Engine Coolant Temperature (ECT) Sensor, Monitors Temperature

Choose Your Help Topic Below


Engine Coolant Temperature (ECT) Sensor – Function, Failure, Test

Engine Coolant Temperature Sensor – Step By Step Replacement

(ECT) Engine Coolant Temperature Sensor – What Can Go Wrong

Engine Cooling Fan – Is Your Cooling Fan Working – How To Test It

Electric Cooling Fan – What Can Stop It From Working Properly


BY DANNY BENDER