Can you drive without a coolant temperature sensor?
Unplugging the engine coolant sensor while the car is running will likely cause the engine to stumble and run rough. Unplugging the engine coolant temperature sensor before starting the engine may result in a no start, especially likely on a cold morning.
Where are the wires on the coolant sensor?
It was a wire soldered on to the back of the sensor.” ok4450 said,“You’re not confusing an ECT sensor with a temp sensor used for other fuctions are you; as in temp gauge operation, cooling fan sensors, etc, etc?” Nevada_545said, “The coolant temp sender for the gauge has one wire, dark green.
What to do if your coolant temperature sensor is bad?
Connect the digital multi-meter to the coolant temperature sensor by connecting the red probe to the terminal end of the coolant temperature sensor and the black probe to the solid grounding. Note the readings. Start the engine and let it run for a couple of minutes at least. Note the readings initially while the engine is cool.
What does the coolant temperature sensor ( ECT ) do?
The engine coolant temperature sensor is temperature-variable resistor, which usually has a negative temperature coefficient. It is a two-wire thermistor immersed in coolant and measures its temperature. The onboard computer uses the signal of ECT as the main correction factor when calculating the ignition advance and the injection duration.
What is the resistance of the coolant sensor?
In cold engine and an ambient temperature of 20 ºC the sensor resistance is between 2000Ω and 3000Ω. After the engine start, coolant temperature begins to rise. ECT gradually heats and its resistance reduces proportionately. At 90 ºC its resistance is in the range of 200Ω to 300Ω.
Where are the wires for the coolant temp sensor?
The coolant temp sender for the gauge has one wire, dark green. That one is in the left cylinder head between the first two spark plus. The coolant temp sensor for the PCM has two wires and is located near the thermostat. Assuming this is not a diesel engine. In Summary…
Connect the digital multi-meter to the coolant temperature sensor by connecting the red probe to the terminal end of the coolant temperature sensor and the black probe to the solid grounding. Note the readings. Start the engine and let it run for a couple of minutes at least. Note the readings initially while the engine is cool.
Why do you need ground wire for coolant sensor?
Ground wire is obvisouly needed because the sensor won’t work with the ground wire taped off. Nevada_545 July 6, 2016, 6:35am #5 This diagram is for the 5.3L engine; ok4450 July 6, 2016, 6:35am #6
What to do if your car sensor is broken?
If the broken extractor does come out then what’s needed is an angle head drill to access and drill out what’s left of the sensor. Failing all of that, this may involve removing the damaged part completely from the car and having a machine shop attempt a fix or locate another used part. The latter may be the easiest and cheapest option.
What should the coolant temp be on a GTI?
The default coolant temperature you will see in your MK5 GTI is 90°C or 194°F. The needle will pass the 90 degrees mark only when the coolant temp is getting dangerously high. This is when you will want to be seeing the symptoms you are experiencing. Water Pump Failure Symptoms:
What happens when your coolant temperature sensor is bad?
The engine is very sensitive to wrong air-fuel mixtures at idle and this is a condition when you might notice that something is wrong with your engine coolant temperature sensor. The engine coolant temperature sensor can have a hard impact on the air-fuel mixture. A bad air-fuel mixture can also cause the engine performance to drop drastically.
What to do if your oil temperature sensor is bad?
When you first start your vehicle on cold mornings, let the car idle for about five minutes until the oil gets a chance to warm up. This way, your engine will run more efficiently and live much longer.
What should coolant temp be when engine is hot?
With a good OBD2 code reader, you can also check the live data and the parameters of the CTS sensor. Check that the temperature value of the CTS is around 80-90c when the engine is hot. A lot of engine coolant temperature sensors have two wires and the sensor is controlled by Ohm.