Asked by: Roldan Urrazquin
asked in category: General Last Updated: 15th April, 2020

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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Also asked, how do you know if your coolant temperature sensor is bad?

Signs of a bad Engine Coolant Temperature Sensor

  1. Poor Mileage.
  2. Check Engine Light Activates.
  3. Black Smoke from the Exhaust pipe.
  4. Engine Overheats.
  5. Poor Idling.
  6. Do not Use Tap Water to Refill Radiator.
  7. Fix Oil Leaks and Gasket Immediately.
  8. Check for Coolant Leaks.

Also, what happens when the coolant temperature sensor goes bad? One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy. If the coolant temperature sensor goes bad it can send a false signal to the computer and throw off the fuel and timing calculations. This will reduce fuel economy, and may hinder engine performance.

Also to know is, what is the resistance of coolant temperature sensor?

Working principle of the ECT 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.

How do you fix a coolant sensor?

Replacing this sensor is an easy project that can be done in your own garage or on a flat driveway.

  1. Step 1 - Open Car Hood.
  2. Step 2 - Locate Coolant Temperature Sensor.
  3. Step 3 - Remove Lead Wire from Terminal.
  4. Step 4 - Loosen Coolant Sensor.
  5. Step 5 - Remove and Replace.
  6. Step 6 - Torque Sensor in Place.
  7. Step 7 - Reconnect Wire.

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