What happens when the coolant temperature sensor goes out?
The coolant temperature sensor can fail and transmit cold signals to the computer. This action confuses the computer and stimulates it to enrich the fuel mixture unnecessarily. This can cause the fuel mixture to be vibrant such that during combustion, the fuel can’t be adequately consumed within the chamber.
Where is the coolant temp switch located?
The Engine Coolant Temperature Sensor can be located in a few places, depending on the vehicle and its manufacturer. It is most often located close to the thermostat of the cooling system or inside of it. The cooling system is located beneath the air intake pipe and behind the right cylinder.
How do you test a water temperature sensor?
Submerge the sensor in the water and take a reading. Wait a minute or so for the screen to give you a reading of the cold water. Once you have a reading, write down the measurement for reference. A common reading for a temperature sensor in cold water is around 5 volts.
Does the coolant temp sensor control the thermostat?
The sensor works by measuring the temperature that’s being given off by the thermostat and/or the coolant itself. The temperature is then sent to the on-board control system.
How do you change a coolant temperature sensor?
- With the engine and coolant entirely cooled down, disconnect the battery.
- Remove any plastic engine covers.
- Locate the coolant temp sensor.
- Partially drain the cooling system, or perform a coolant flush, if it is due.
- Disconnect the electrical connector from the sensor by pushing on the tab and pulling the connector.
Do you have to drain coolant to replace temperature sensor?
Do you need to drain coolant to change coolant temperature sensor? Open the radiator valve and drain about two to three quarts of coolant. You only need to remove enough to drop the level below the sensor. Then close the drain valve.