BMW 318is Car Thermostat Replacement at your home or office.

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$142.49 - $298.35

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Car Thermostat Replacement Estimate for BMW 318is

BMW 318is Car Thermostat Replacement costs $194 on average.

CarServiceEstimateShop/Dealer Price
1999 BMW 318isL4-1.9LService typeCar Thermostat ReplacementEstimate$384.41Shop/Dealer Price$479.88 - $719.91
1995 BMW 318isL4-1.8LService typeCar Thermostat ReplacementEstimate$252.49Shop/Dealer Price$314.82 - $431.88
1992 BMW 318isL4-1.8LService typeCar Thermostat ReplacementEstimate$214.99Shop/Dealer Price$265.70 - $374.05
1997 BMW 318isL4-1.9LService typeCar Thermostat ReplacementEstimate$411.71Shop/Dealer Price$517.05 - $779.84
1996 BMW 318isL4-1.9LService typeCar Thermostat ReplacementEstimate$411.71Shop/Dealer Price$511.97 - $770.95
1991 BMW 318isL4-1.8LService typeCar Thermostat ReplacementEstimate$209.99Shop/Dealer Price$256.44 - $361.59
1993 BMW 318isL4-1.8LService typeCar Thermostat ReplacementEstimate$214.99Shop/Dealer Price$264.45 - $371.85
1998 BMW 318isL4-1.9LService typeCar Thermostat ReplacementEstimate$379.41Shop/Dealer Price$473.50 - $712.50
Show example BMW 318is 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 BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating


YourMechanic BMW 318is Service

Average Rating

5/5

Number of Reviews

7

Rating Summary
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James

10 years of experience
233 reviews
James
10 years of experience
BMW 318is - Thermostat - Daly City, California
This was my 2nd meeting with James and yet again he fixed my problem. My car has been giving me overheating problems and he fixed the problem and recommended I do other services so I don't have a problem with overheating for a long time. His personally & professionalism is what make James, he come's on time and gets his job started and when I keep him company he likes shows and teaches me how to diagnose simple fixes. Any time I have a car problem I'm giving James a call.

Peter

41 years of experience
1231 reviews
Peter
41 years of experience
BMW 318is - Car is not starting - Scottsdale, Arizona
Peter was awesome, thorough and completely honest. He knew exactly what to look for, I felt i had a complete diagnosis of what was wrong with my car.

Lucas

19 years of experience
840 reviews
Lucas
19 years of experience
BMW 318is - Power Steering Belt Replacement - Burbank, California
Awesome guy. Awesome service. Highly recommend.

David

26 years of experience
142 reviews
David
26 years of experience
BMW 318is - Thermo Fan Switch - San Diego, California
David's technological and mechanical trouble shooting abilities and professionalism is beyond reproach. He is not only thorough but easily explains what troubles found but also explains how the found discrepancy affects the car. If I need to call 'Your Mechanic' again, I will insist that David come again. He is the best car mechanic I have met to date.

Excellent Rating


YourMechanic BMW 318is Service

Average Rating

5/5

Number of Reviews

7

Rating Summary
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Number of BMW 318is services completed
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