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Coolant Temperature Sensor

 Shop Coolant Temperature Sensor

If your car has decreased fuel economy, increased emissions, and arbitrary engine ahut downs, you'd better address the problem by checking your vehicle's coolant temperature sensor. Coolant temperature sensors are electronic monitoring devices located near the thermostat. They basically work by indicating the temperature of the coolant that's running through the engine. If temperature is normal, the gauge on the dashboard will display a blue color. If it senses that the engine is too cold, it will make the fuel mixture in the engine richer by increasing the pace of the injector. On the other hand, if the coolant becomes alarmingly hot, the gauge will display a red color and the engine's cooling fan will be turned on. If the sensor in your car goes bad, you won't be able to keep track of your engine's coolant temperature, which may lead to overheating. Of course, you know what comes after that.nothing but headaches and hassles. To prevent these from happening, you'd better address that faulty sensor in your cooling system right away. To help you get started, here's a ahort repair guide that you can follow, including some useful tips.

How to Change a Coolant Temperature Sensor

Step 1: To begin, put a drip pan under the radiator and drain about a gallon of antifreeze.

Step 2: After that, find the wire that connects the sensor to the engine's wiring harness and use an open-end box wrench to disconnect it.

Step 3: Once you've disconnected the wire, observe if it has any melted parts or discolorations. Replace the wire if any of the two are present.

Step 4: Next, use either an open end wrench or socket and wrench to loosen the sensor until you can already remove it by hand. When it's loose enough, disconnect it from the engine block.

Step 5: Wrap the threads of the new sensor with Teflon tape and install it using your wrench of choice. Do not over tighten it to avoid damaging the new component.

Step 6: Attach the electrical connector to the coolant temperature sensor and replenish the antifreeze that you drained earlier.

Step 7: With the radiator cap atill off, start the engine and allow it to warm up. The thermostat will eventually open and the antifreeze will start to circulate. When this happens, replenish the antifreeze until the radiator is filled. Lastly, ensure that the overflow bottle is half full.

Coolant Temperature Sensor Repair Tips

  • Before you begin your repairs, ensure that the engine is cool enough to touch to avoid burning yourself.
  • The sensor is located on the driver's side of the engine compartment attached to the engine block.
  • Prior to installation, make sure you know the right torque measurement of the new sensor to avoid causing damage to the component.
  • Take note that not all engines need the same amount of coolant. To be sure, consult your car's manual to find out your engine's coolant requirement.
  • To test if the new coolant temperature sensor works, observe if the cooling fan of the engine starts to work after the engine heats up.