Isuzu Trooper Car Thermostat Replacement at your home or office.

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Car Thermostat Replacement Service

How much does a Car Thermostat Replacement cost?

On average, the cost for a Isuzu Trooper Car Thermostat Replacement is $201 with $61 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2001 Isuzu TrooperV6-3.5LService typeCar Thermostat ReplacementEstimate$560.10Shop/Dealer Price$622.80 - $793.06
2000 Isuzu TrooperV6-3.5LService typeCar Thermostat ReplacementEstimate$540.28Shop/Dealer Price$599.09 - $766.44
1994 Isuzu TrooperV6-3.2LService typeCar Thermostat ReplacementEstimate$328.37Shop/Dealer Price$375.82 - $514.00
2002 Isuzu TrooperV6-3.5LService typeCar Thermostat ReplacementEstimate$540.28Shop/Dealer Price$599.14 - $766.53
1990 Isuzu TrooperL4-2.6LService typeCar Thermostat ReplacementEstimate$313.01Shop/Dealer Price$358.10 - $485.86
1991 Isuzu TrooperV6-2.8LService typeCar Thermostat ReplacementEstimate$312.09Shop/Dealer Price$355.61 - $481.69
1997 Isuzu TrooperV6-3.2LService typeCar Thermostat ReplacementEstimate$328.37Shop/Dealer Price$375.84 - $514.03
1995 Isuzu TrooperV6-3.2LService typeCar Thermostat ReplacementEstimate$328.37Shop/Dealer Price$375.82 - $514.00
Show example Isuzu Trooper 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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Meet some of our expert Isuzu mechanics

Real customer reviews from Isuzu owners like you.

Excellent Rating

(60)

Rating Summary
57
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Graham

22 years of experience
142 reviews
Graham
22 years of experience
Isuzu Trooper V6-3.5L - Valve Cover Gasket - McHenry, Illinois
Graham was a very great guy, knowledgeable and helpful!

Matthew

34 years of experience
1438 reviews
Matthew
34 years of experience
Isuzu Trooper V6-3.2L - Car is not starting - Newport News, Virginia
Matthew was a nice down to earth guy. Anybody's neme that came from from the Bible is alright with me. If everybody in this world was more like Matt this would be a better America!! & Matt is a person that makes America great! !!! Keep up the good work Matt! God is proud of you! & he has more blessings for you. & you name in the book of life.

Chris

21 years of experience
448 reviews
Chris
21 years of experience
Isuzu Trooper L4-2.6L - Valve Cover Gasket - Portland, Oregon
Had a previous mechanic diagnose the issue and he rescheduled me several times. Finally found Chris. He took a look at the issue and came up with a less expensive solution, turned out to be right fix. Chris was easy to talk with, informative and had my car running in a few hours at half the cost.

Paul

26 years of experience
280 reviews
Paul
26 years of experience
Isuzu Trooper V6-3.5L - Drive Belt Tensioner - Las Vegas, Nevada
Extremely satisfied. Confident in Paul. I appreciate being shown the tensioner (pulley) that was locked up causing my serpentine belt to break twice.

Excellent Rating

(60)

Rating Summary
57
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Number of Isuzu Trooper services completed
660+
services done by our mechanics
TOTAL NUMBER OF EXPERT Isuzu MECHANICS
200+
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