Saturn LS Coolant Temperature Switch (Sensor) Replacement at your home or office.

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Coolant Temperature Switch (Sensor) Replacement Service

How much does a Coolant Temperature Switch (Sensor) Replacement cost?

On average, the cost for a Saturn LS Coolant Temperature Switch (Sensor) Replacement is $118 with $23 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2000 Saturn LSL4-2.2LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$161.63Shop/Dealer Price$183.29 - $225.77
Show example Saturn LS Coolant Temperature Switch (Sensor) Replacement prices

What is the Coolant Temperature Switch (Sensor) all about?

The coolant temperature switch, also called the coolant temperature sensor, is a switch that reads the engine coolant temperature and sends a signal to the engine control module, or ECM, to control other functions of engine operation such as the air-fuel ratio.

It is also called a switch because on some cars, it is used to turn on the engine cooling fan at a specific temperature. This aids in the engine warm-up process as well as keeping the engine at a safe operating temperature.

Keep in mind:

  • The coolant temperature switch is a crucial part of the cooling system. If faulty, it can cause severe internal engine damage due to overheating, incorrect air-fuel ratio, or incorrect ignition timing. It can also cause shorter life to the cooling fan motor or other electrical components of the cooling system.
  • Some vehicles are equipped with a separate sensor to display the engine temperature to the driver via the temperature gauge.

How it's done:

  • The Coolant Temperature Switch is verified that it needs to be replaced. The coolant is drained until the switch is exposed.

  • The defective Coolant Temperature Switch is removed by disconnecting the connector and removing it from the manifold.

  • The new Coolant Temperature Switch is installed into the mounting hole in the manifold and the electrical connector is reconnected. The coolant is then refilled.

  • The Coolant Temperature Switch is tested for operation, codes cleared, and retested to ensure all codes have been resolved.

  • The vehicle is road tested to ensure proper operation of the Cooling System.

Our recommendation:

If you suspect that your coolant temperature switch has failed, have one of our licensed mechanics come out immediately to diagnose the problem.

What common symptoms indicate you may need to replace the Coolant Temperature Switch (Sensor)?

  • Check Engine light on
  • Engine overheating
  • Cooling fan runs intermittently
  • Engine misfires, stalls, or idles roughly
  • Erratic coolant temperature

How important is this service?

This part, when faulty, could cause the fan to run intermittently or not at all, which in turns causes overheating or overuse of the cooling fan motor. Whenever overheating occurs, severe engine damage is a possibility.

The engine air-fuel ratio is what keeps it running smoothly. If the ratio gets skewed, the engine will have poor fuel economy and run poorly or not at all. The coolant temperature switch is important because it gives the ECM the information it needs to make this calculation and run the engine optimally. YourMechanic will be able to tell you if this part is performing correctly.

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Meet some of our expert Saturn mechanics

Real customer reviews from Saturn owners like you.

Excellent Rating

(5)

Rating Summary
4
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Richard

11 years of experience
450 reviews
Richard
11 years of experience
Saturn LS L4-2.2L - Coolant is leaking - Odenton, Maryland
Great Service! He was knowledgeable about what my issue was and provided me with the help that I needed.

Oscar

24 years of experience
72 reviews
Oscar
24 years of experience
Saturn LS L4-2.2L - Car is not starting - Odenton, Maryland
Oscar was very professional and knowledgeable about cars. He let me know exactly what was wrong with my car. I had been told my fuel pump was bad which is why my car wouldn't start. Well turns out that wasn't the case at all. Oscar found that it was a broken timing chain was the reason for my car not starting. I'm glad I found that out before shelling out unnecessary money on something that wasn't broken at all. All in all Great service across the board and I would highly recommend Oscar for any auto needs.

Rigoberto

11 years of experience
739 reviews
Rigoberto
11 years of experience
Saturn SL1 L4-1.9L - Coolant Temperature Switch (Sensor) - Chicago, Illinois
Rigoberto was professional and easy to talk to when I had any car related questions. He replaced my coolant temp sensor in less time than it was expected. He texted me to see if I was available sooner than the scheduled appointment date. I told him I was available sooner, just I was getting off work. If you have any problems that you feel you can't fix yourself, Rigoberto is your guy.

Robert

31 years of experience
641 reviews
Robert
31 years of experience
Saturn SL1 L4-1.9L - Coolant Temperature Switch (Sensor) - Sunnyvale, California
On time, very up front about his experience with the issue, and how it was resolved.

Excellent Rating

(5)

Rating Summary
4
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Number of Saturn Coolant Temperature Switch (Sensor) Replacement services completed
55+
services done by our mechanics
TOTAL NUMBER OF EXPERT Saturn MECHANICS
700+
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