Isuzu Trooper Car Thermostat Replacement at your home or office.

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Car Thermostat Replacement Estimate for Isuzu Trooper

Isuzu Trooper Car Thermostat Replacement costs $185 on average.

CarServiceEstimateShop/Dealer Price
1989 Isuzu TrooperV6-2.8LService typeCar Thermostat ReplacementEstimate$225.55Shop/Dealer Price$273.44 - $385.61
1996 Isuzu TrooperV6-3.2LService typeCar Thermostat ReplacementEstimate$225.77Shop/Dealer Price$274.63 - $393.28
1987 Isuzu TrooperL4-2.3LService typeCar Thermostat ReplacementEstimate$206.79Shop/Dealer Price$250.91 - $355.32
1986 Isuzu TrooperL4-2.3LService typeCar Thermostat ReplacementEstimate$206.79Shop/Dealer Price$250.89 - $355.28
1987 Isuzu TrooperL4-2.2L Turbo DieselService typeCar Thermostat ReplacementEstimate$320.27Shop/Dealer Price$392.77 - $582.31
1994 Isuzu TrooperV6-3.2LService typeCar Thermostat ReplacementEstimate$225.77Shop/Dealer Price$274.63 - $393.28
1997 Isuzu TrooperV6-3.2LService typeCar Thermostat ReplacementEstimate$230.77Shop/Dealer Price$279.50 - $398.04
1988 Isuzu TrooperL4-2.6LService typeCar Thermostat ReplacementEstimate$214.73Shop/Dealer Price$259.82 - $366.62
Show example Isuzu Trooper 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 Isuzu mechanics

Real customer reviews from Isuzu owners like you.

Excellent Rating

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Rating Summary
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David

10 years of experience
165 reviews
David
10 years of experience
Isuzu Trooper V6-3.5L - Oxygen Sensor Replacement (Front/Upper/Upstream, Rear/Lower/Downstream) - Orlando, Florida
Very thorough, friendly, capable, and knowledgeable. I would most definitely recommend David to my friends, family, and co-workers.

Jonathan

22 years of experience
304 reviews
Jonathan
22 years of experience
Isuzu Trooper V6-3.2L - Oxygen Sensor Replacement (Front/Upper/Upstream) - Denver, Colorado
Very good,fast and easy, Jonathan was great

James

30 years of experience
781 reviews
James
30 years of experience
Isuzu Trooper V6-3.5L - Alternator Repair - Sanford, Florida
James was prompt and professional. It was surprising at how quickly the job was completed. I would recommend James to anyone.

Carlos

16 years of experience
362 reviews
Carlos
16 years of experience
Isuzu Trooper V6-3.5L - Spark Plugs - Fort Worth, Texas
Carlos is very professional and punctual on this appointment and a previous appointment. Carlos worked very hard to complete a service appointment that spanned extra time due to inclement weather. My paid price for all services was much better that quoted and expected. It can be very difficult to find good quality professional and certified mechanics in the DFW area. I will contact Carlos Miller again for additional repairs on my 2002 Isuzu Trooper.

Excellent Rating

(55)

Rating Summary
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Number of Isuzu Trooper services completed
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services done by our mechanics
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200+
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