Saturn L200 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 L200 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
2001 Saturn L200L4-2.2LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$161.63Shop/Dealer Price$183.29 - $225.77
2003 Saturn L200L4-2.2LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$141.63Shop/Dealer Price$163.31 - $205.80
2002 Saturn L200L4-2.2LService typeCoolant Temperature Switch (Sensor) ReplacementEstimate$141.63Shop/Dealer Price$163.31 - $205.80
Show example Saturn L200 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

(64)

Rating Summary
57
3
1
1
2
57
3
1
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2

Edward

42 years of experience
64 reviews
Edward
42 years of experience
Saturn L200 L4-2.2L - Oil Change - Phoenix, Arizona

Milton

37 years of experience
239 reviews
Milton
37 years of experience
Saturn L200 L4-2.2L - Fuel Filter - Las Vegas, Nevada
I booked a service call because I was having issues starting my Saturn. Milton was prompt and really informative. I had narrowed the problem down to a fuel filter because, on a previous appointment, I was told that the starter and fuel lines were not what was preventing my car from starting normally. Milton checked the fuel delivery system to be sure that everything was intact and operating properly. He clearly explained that, in his opinion, a fuel filter should not be at fault in this particular situation, and that he would not make any repairs unless necessary. He considered that the problem might be a battery that had outlived it's usefulness. Milton ran a battery check, and voila...it did not pass the test. He replaced the battery and, in my mind, that seems to have fixed multiple issues. Milton is a knowledgeable, easy going guy that surely knows his business. For as long as I might require repairs, Milton is the man to do them. I'm very happy with his work and attitude.

Tam

22 years of experience
251 reviews
Tam
22 years of experience
Saturn L200 L4-2.2L - Car is not starting - Daly City, California

Carlos

16 years of experience
362 reviews
Carlos
16 years of experience
Saturn L200 L4-2.2L - Fuel Filter - Fort Worth, Texas
Carlos was exceptional in every way! He was on time, polite, efficient and everything that a good mechanic should be. We will be using him for all our maintenance from now on!

Excellent Rating

(64)

Rating Summary
57
3
1
1
2
57
3
1
1
2
Number of Saturn L200 services completed
704+
services done by our mechanics
TOTAL NUMBER OF EXPERT Saturn MECHANICS
700+
experts on our platform

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