Does the ECT sensor control the thermostat?
In most cars, the primary ECT sensor (ECT sensor 1) is installed near the thermostat in the cylinder head or block or on the thermostat housing. This allows the CHT sensor to measure the temperature of the engine correctly even with loss of coolant. This can help prevent overheating.
Will a bad ECT throw a code?
A failed (ECT) sensor can send a false signal to the computer; and throw off the fuel and timing calculations. It is not uncommon for the coolant temperature sensor to fail; and send a permanently cold signal to the computer. This will cause the computer to think the engine is cold, even when it is not.
How can you tell if the ECT sensor is bad?
Symptoms of a bad or failing coolant temperature switch (sensor)
- Poor fuel economy. One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy.
- Black smoke from engine.
- Overheating engine.
- Check Engine Light comes on.
What is the ECT sensor in an engine?
An ECT sensor, or Engine Coolant Temperature Sensor is a sensor that is screwed into the engine’s block or cylinder head and is used to determine the temperature of the engine coolant. The ECT sensor is basically a thermistor that changes resistance with temperature.
Is the ECT sensor the same as the coolant temperature sender?
Note that the ECT sensor is not the same thing as a coolant temperature SENDER. The temperature sender is typically used as the reading for the temperature gauge on the instrument cluster. Here is a photo of one ECT sensor:
Why does the ECT sensor fail the calibration test?
If enable conditions are met and the resistance of the sensor is greater than a calibration for a period of time the test will fail and the code sets. The ECT (Engine coolant temperature) sensor is used to measure the engine temperature and is threaded in the engine coolant jacket and in direct contact with the engine coolant.
When to replace an engine coolant temperature sensor?
Consequently, engine coolant temperature sensor (ECT) replacement usually happens only after they have failed. While, its function is vital, all it really does is; keep track of the changing temperatures of your engine coolant. First, the vehicle’s (PCM/ECM) sends a 5 volt reference signal to the engine coolant temperature sensor (ECT).
https://www.youtube.com/watch?v=_JXHgWumzvw