Nissan 240SX Car Thermostat Replacement Costs

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Car Thermostat Replacement Service

How much does a Car Thermostat Replacement cost?

On average, the cost for a Nissan 240SX Car Thermostat Replacement is $253 with $71 for parts and $182 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1990 Nissan 240SXL4-2.4L	Service typeCar Thermostat Replacement	Estimate$380.02	Shop/Dealer Price$429.33 - $566.73
1997 Nissan 240SXL4-2.4L	Service typeCar Thermostat Replacement	Estimate$365.45	Shop/Dealer Price$411.75 - $545.28
1991 Nissan 240SXL4-2.4L	Service typeCar Thermostat Replacement	Estimate$365.45	Shop/Dealer Price$411.78 - $545.34
1993 Nissan 240SXL4-2.4L	Service typeCar Thermostat Replacement	Estimate$365.45	Shop/Dealer Price$411.78 - $545.33
1995 Nissan 240SXL4-2.4L	Service typeCar Thermostat Replacement	Estimate$365.45	Shop/Dealer Price$413.69 - $548.69
1992 Nissan 240SXL4-2.4L	Service typeCar Thermostat Replacement	Estimate$365.45	Shop/Dealer Price$411.96 - $545.65
1998 Nissan 240SXL4-2.4L	Service typeCar Thermostat Replacement	Estimate$365.45	Shop/Dealer Price$411.80 - $545.37
1996 Nissan 240SXL4-2.4L	Service typeCar Thermostat Replacement	Estimate$365.45	Shop/Dealer Price$411.78 - $545.33

Show example Nissan 240SX Car Thermostat Replacement prices

What is an engine cooling system thermostat and how does it work?

The car's engine cooling system thermostat is a small valve within a cooling system passageway that opens and closes in response to the temperature of the circulating engine coolant. When your car is first started and the coolant is cold, the valve in the thermostat will be in the closed position, circulating the coolant flow only within the engine instead of flowing to the radiator, which allows the engine to warm up fast, promoting fuel efficiency, low emissions, and reduced engine deposits. Once the engine coolant reaches the design temperature, usually around 195 degrees, the valve will open and close as you drive in order to maintain a coolant temperature typically between 195 to 225 degrees Fahrenheit.

Thermostat

When to consider replacing the engine cooling system thermostat:

Engine overheats. A thermostat with the valve stuck closed is a common cause of engine overheating. However, since there are other causes of overheating, a mechanic will thoroughly inspect the cooling system prior to condemning the thermostat. Since it is usually not known how badly the engine overheated, the mechanic will also try to determine if there is evidence that the cylinder head gasket was blown. If so, it would be repaired prior to replacing the thermostat.
Temperature gauge reads too low or too high. Thermostats can get sticky, causing the engine temperature to stray from the optimal range. Your dash-mounted temperature gauge will notify you of this malfunction.
Cooling system repairs. All thermostats eventually fail. Therefore, if the cooling system is already open for major repairs, such as water pump or radiator replacement, it is recommended to install a new thermostat simply as insurance against future breakdown.

How do mechanics replace the engine cooling system thermostat?

Once the engine is completely cold, the radiator cap is loosened and enough coolant is drained from the radiator so the coolant level is below the thermostat housing.
The thermostat housing is removed and the thermostat and gasket are extracted. Note that some cars have more than one cooling system thermostat and both might need replacement.
All mounting surfaces on the thermostat housing are cleaned of old gasket material. A new gasket is applied and the thermostat is re-installed in the correct orientation and with the temperature sensing cylinder facing downward towards the engine.
The thermostat housing bolts are tightened to original equipment manufacturer (OEM) specifications using a calibrated inch-pound torque wrench.
The cooling system is refilled with the appropriate coolant type and the system is fully bled of all air.
The car engine is run until the normal operating temperature is reached, and while taking precautions with the hot coolant, the coolant level is rechecked while confirming there is flow through the radiator — either visually or with an infrared temperature gun. This will confirm the thermostat is open. Finally, the engine is checked for leaks.

Is it safe to drive with an engine cooling system thermostat problem?

No. If it has been determined that there is a thermostat problem, it should be repaired right away. Failure to do so can cause substantial and costly damage to the engine.

When replacing the engine cooling system thermostat keep in mind:

Engine overheating due to causes other than a faulty thermostat, will themselves damage a thermostat. Therefore, always replace the thermostat if the engine overheats, even if the thermostat was not the initial cause of the overheating.
The thermostat should be replaced anytime you have major work done on the coolant system. It is convenient and costs little during such repairs and insurance against future breakdown.
OEM thermostats are the best ones to use and you can request your mechanic to install only the OEM thermostat. Dealer supplied, OEM thermostats are sometimes more costly but are generally higher quality and specifically engineered for your car.

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Joel

22 years of experience

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Joel

22 years of experience

by Beth

Nissan 240SX L4-2.4L - Car is overheating - Jacksonville, Florida

Joel has been my mechanic for almost 2 years. He always does great work and is very honest about what needs to be done to my 1998 Nissan 240SX. I think he’s the best mechanic in Jacksonville!

Brian

24 years of experience

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Brian

24 years of experience

by Beth

Nissan 240SX L4-2.4L - AC is not working - Jacksonville, Florida

Brian did an excellent job! He was just diagnosing the air conditioner problem on my 1998 Nissan 240SX, and he was able to fix it. I asked him to check the passenger window that wouldn’t roll down, and he got that working too! I’m very pleased with Brian’s work and will definitely book him in the future!!! Your Mechanic.com has the best car mechanics in Jacksonville!!!

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31 years of experience

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James

31 years of experience

by Michael

Nissan 240SX L4-2.4L - Engine is misfiring - Casselberry, Florida

James arrived a little earlier than our scheduled appointment, so we had some time to chat and go into detail about the car's history and so he could provide a more thorough diagnosis of my car. James was very polite, friendly, and a great conversationalist during the appointment. Related to the actual appointment, James was very thorough in his diagnosis of my car and even helped me understand a bit more about my car and what it needed so I could take that information and learn from it. During his report, he determined what was wrong with my car (a bad injector) and even went beyond to determine things that could come up as potential issues and how to remedy them. Overall, the experience was very positive and I'm glad that I went ahead and setup an appointment for James to diagnose my car. If I had someone that needed a mechanic or someone to diagnose their car, James would likely be the first person that came to mind.

Chad

17 years of experience

76 reviews

Chad

17 years of experience

by Robin

Nissan 240SX L4-2.4L - Spark Plugs - Chesterfield, Virginia

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