Often asked: Where Is The Engine Coolant Temperature Sensor Located?

How can you tell if your engine coolant temperature sensor is bad?

What Signs May Signal Your Coolant Temperature Sensor May Be Failing?

  • Poor Fuel Economy.
  • Irregular Temperature Readings.
  • Black Smoke from Your Exhaust.
  • Your Engine is Overheating.
  • Your Check Engine Light is On.

How long does it take to replace a coolant temperature sensor?

The actual process of replacing the coolant temperature sensor is extremely simple. However, the difficult work comes in the preparation of the cooling system – both before and after. Tip: This job should only be completed when the engine is cold and has not been running for a minimum of one hour.

How do you check a coolant temperature sensor?

  1. Step 1 – Locate Coolant Temperature Sensor. The coolant temperature sensor is located on the engine block under the hood.
  2. Step 2 – Connect Digital Volt-Ohm Meter.
  3. Step 3 – Check Readings.
  4. Step 4 – Check With Cold Sensor.
  5. Step 5 – Replace Defective Coolant Temperature Sensor.
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What does the coolant temperature sensor do?

A coolant temperature sensor (CTS) (also known as an ECT sensor or ECTS (engine coolant temperature sensor) is used to measure the temperature of the coolant/antifreeze mix in the cooling system, giving an indication of how much heat the engine is giving off.

Can I drive my car with a bad coolant temperature sensor?

Faulty readings from the coolant temperature sensor can cause your car’s engine to miscalculate the fuel to air mixture within the engine. If the amount of black smoke emitting from your car is excessive, then you should not drive your car and you should tow your vehicle to a mechanic.

What happens when the coolant temperature sensor goes bad?

If the coolant temperature sensor goes bad it 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 reduce fuel economy, and may hinder engine performance.

How much does it cost to replace engine coolant temperature sensor?

The average cost for engine coolant temperature sensor replacement is between $123 and $158. Labor costs are estimated between $82 and $104 while parts are priced between $41 and $54.

How do you fix a coolant temperature sensor?

Let’s Get Started

  1. Release the Cooling System Pressure. Locate and slowly remove the cooling system pressure cap to relieve the system of any residual pressure.
  2. Locate the Coolant Sensor.
  3. Remove the Electrical Connector.
  4. Remove the Coolant Sensor.
  5. Install the New Coolant Temperature Sensor.
  6. Refill the Cooling System.
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How do you fix coolant temperature?

Replacing a Faulty Thermostat

  1. Let the car’s coolant cool for 15 to 20 minutes.
  2. Locate the thermostat.
  3. For better clearance, jack up the front end of the vehicle.
  4. Remove the radiator cap.
  5. Drain the radiator, according to instructions in your car’s repair manual.
  6. Remove the thermostat.

Does the coolant temp sensor control the fan?

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. As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on.

Can a temp sensor affect engine starting?

Bad coolant temperature sensor causes cold starting problems

But the owner had to pump the pedal to keep the engine running. That’s why pumping the gas pedal keeps your engine running. You can have a bad sensor even without a “check engine” light or trouble code.

How do you trick a temperature sensor?

There are at least two ways:

  1. You need to artificially cool the temperature sensor which will fool the control unit that the temperature is below the setpoint.
  2. Temporarily adjust the setpoint of the thermostat by turning the temperature hotter so that the control will register temperature below the setpoint and turn on.

Can a bad coolant temp sensor cause rough idle?

A faulty coolant sensor that always reads cold may cause the fuel control system to run rich, pollute and waste fuel. A coolant sensor that always reads hot may cause cold driveability problems such as stalling, hesitation and rough idle. This also affects engine performance and fuel economy.

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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. This will minimize coolant waste when you remove the sensor.

What is the difference between a coolant temperature sensor and sender?

A SENDER and a SENSOR can be the same. But a SENDER can be anything that sends a signal such as a telegraph sender. A SENSOR detects something such as temperature, pressure, light, etc. and generates a signal (which can be sent).

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