Car Thermostat Replacement at your home or office

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$141.88 - $639.09

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How much does Car Thermostat Replacement cost?

It depends on the type of car you drive and the auto repair shop you go to. Our mechanics are mobile, which means they don't have the overhead that repair shops have. They provide you convenience by coming to your home or office.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2006 Hyundai Tiburon $152 $71.61 $79.99 15% $179.11
2008 Nissan Frontier $176 $71.89 $103.98 16% $211.64
2010 Chevrolet Express 3500 $190 $102.37 $87.98 13% $220.62
2011 Cadillac CTS $435 $211.40 $223.97 15% $512.40
2010 BMW 750Li xDrive $292 $139.78 $151.98 15% $344.03
2011 Ford Mustang $169 $88.96 $79.99 14% $196.46

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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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Recent Car Thermostat Replacement reviews

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Rating Summary
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1,821
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Jim

32 years of experience
109 reviews
Jim
32 years of experience
Audi Q7 - Thermostat - Pleasanton, California
The best consumer service we have received from anyone. He is a expert and great With communication
Scion tC - Thermostat - San Ramon, California
Jim did a great job. He fixed the issue, worked quickly, and kept the place clean. Would definitely request him for service again or recommend to a friend!

Jason

31 years of experience
299 reviews
Jason
31 years of experience
Chevrolet Silverado 1500 - Thermostat - Irving, Texas
Jason provided excellent service. He completed the repairs and took the time to explain what the issue was. Highly recommended.

Jimmi

26 years of experience
102 reviews
Jimmi
26 years of experience
Hyundai Santa Fe - Thermostat - Orlando, Florida
Great mechanic very knowledgeable and informative. knew how to disassemble and reassemble timing belt on Santa fe.

Juan

11 years of experience
25 reviews
Juan
11 years of experience
Lexus GS430 - Thermostat - Vallejo, California
Juan was great!!! On time, great work, great advice and treated my car with care. I would definitely recommend his work.

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com