Nissan 240SX Car Thermostat Replacement at your home or office.

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received a Thermostat Replacement.
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$147.01 - $168.01

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Car Thermostat Replacement Estimate for Nissan 240SX

Nissan 240SX Car Thermostat Replacement costs $156 on average.

CarServiceEstimateShop/Dealer Price
1994 Nissan 240SXL4-2.4LService typeCar Thermostat ReplacementEstimate$196.53Shop/Dealer Price$233.35 - $309.37
1991 Nissan 240SXL4-2.4LService typeCar Thermostat ReplacementEstimate$196.53Shop/Dealer Price$233.43 - $309.51
1989 Nissan 240SXL4-2.4LService typeCar Thermostat ReplacementEstimate$204.77Shop/Dealer Price$241.17 - $317.85
1990 Nissan 240SXL4-2.4LService typeCar Thermostat ReplacementEstimate$198.27Shop/Dealer Price$237.79 - $316.81
1997 Nissan 240SXL4-2.4LService typeCar Thermostat ReplacementEstimate$212.53Shop/Dealer Price$251.84 - $338.73
1992 Nissan 240SXL4-2.4LService typeCar Thermostat ReplacementEstimate$196.53Shop/Dealer Price$229.33 - $302.33
1998 Nissan 240SXL4-2.4LService typeCar Thermostat ReplacementEstimate$219.03Shop/Dealer Price$258.06 - $344.74
1995 Nissan 240SXL4-2.4LService typeCar Thermostat ReplacementEstimate$190.03Shop/Dealer Price$225.83 - $301.08
Show example Nissan 240SX Car Thermostat Replacement prices

Car Thermostat Replacement Service

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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Meet some of our expert Nissan mechanics

Real customer reviews from Nissan owners like you.

Excellent Rating


YourMechanic Nissan 240SX Service

Average Rating

4.6/5

Number of Reviews

34

Rating Summary
26
5
2
1
0
26
5
2
1
0

Jan

16 years of experience
16 reviews
Jan
16 years of experience
Nissan 240SX - Drive Belt Tensioner Replacement - Temple City, California
Very great guy who listened to all my questions and concerns. He arrived 40 minutes early!! Jan was extremely helpful and patient. His work was also very fast but done very well and caution. Highly recommended to anyone and everyone within his area.

Honorio

17 years of experience
755 reviews
Honorio
17 years of experience
Nissan 240SX - Alternator - Palo Alto, California
the maintenance provided did not fix the problem

Deane

9 years of experience
271 reviews
Deane
9 years of experience
Nissan 240SX - Car starts and then dies - San Diego, California
The initial appointment with Deane was fine, however, the follow-up was less than satisfactory. After his inspection Deane informed me I would be contacted by the office with a quote. After waiting more than 5 hours, I called and left a message requesting a call back. I was called back, given a quote and when requesting an appointment was told I'd be called again after checking Deane's schedule. Two hours later I was informed via message that Peter was assigned the repair appointment for 4/23.. One hour before the appointment, Peter called to reschedule due to a problem with needed parts. An hour later the office called stating there is no problem and Peter could arrive around noon. I'd had enough by then that I canceled the appointment. Deane as an individual was professional, but I would not recommend him because of the lack of professionalism demonstrated by his employer.

Jerome

22 years of experience
412 reviews
Jerome
22 years of experience
Nissan 240SX - Car is not starting - Baltimore, Maryland
Jerome arrived early and went right to work. he got the car started and a diagnoses as to what the problem most likely is.

Excellent Rating


YourMechanic Nissan 240SX Service

Average Rating

4.6/5

Number of Reviews

34

Rating Summary
26
5
2
1
0
26
5
2
1
0
Red-stars EXCELLENT RATING ON
Number of Nissan 240SX services completed
374+
services done by our mechanics
TOTAL NUMBER OF EXPERT Nissan MECHANICS
1100+
experts on our platform

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