Audi 4000 Car Thermostat Replacement Costs

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Car Thermostat Replacement Service

How much does a Car Thermostat Replacement cost?

On average, the cost for a Audi 4000 Car Thermostat Replacement is $169 with $74 for parts and $95 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1980 Audi 4000L4-1.6L	Service typeCar Thermostat Replacement	Estimate$262.71	Shop/Dealer Price$317.14 - $441.06
1984 Audi 4000L4-1.8L	Service typeCar Thermostat Replacement	Estimate$242.71	Shop/Dealer Price$297.17 - $421.11
1981 Audi 4000L5-2.2L	Service typeCar Thermostat Replacement	Estimate$259.53	Shop/Dealer Price$318.20 - $454.75
1985 Audi 4000L5-2.2L	Service typeCar Thermostat Replacement	Estimate$428.93	Shop/Dealer Price$529.91 - $793.48
1983 Audi 4000L5-2.2L	Service typeCar Thermostat Replacement	Estimate$433.35	Shop/Dealer Price$535.50 - $802.44
1986 Audi 4000L5-2.2L	Service typeCar Thermostat Replacement	Estimate$428.93	Shop/Dealer Price$529.95 - $793.55
1987 Audi 4000L4-1.8L	Service typeCar Thermostat Replacement	Estimate$247.71	Shop/Dealer Price$301.93 - $425.69
1981 Audi 4000L4-1.7L	Service typeCar Thermostat Replacement	Estimate$247.71	Shop/Dealer Price$302.59 - $426.83

Show example Audi 4000 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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Jonathan

13 years of experience

51 reviews

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Jonathan

13 years of experience

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by Donald

Audi 4000 L4-1.6L Turbo Diesel - Alternator Belt - Arlington, Texas

Jonathan showed up early for his scheduled appointment. That doesn't happen often in life. Ask your doctors office. He was fully prepared for the reported issue with my car. He informed me that the job may take 20 minutes or hours, based on the complexibility of the bolt location and if they were factory standard. Most of the bolts were tightened back in 1983 and had not been loose since. He took almost 2 hours but the job was done correctly. My test drive proved the work to be correct, He will be recommended to others and will be requested to come back for any other repairs needed on my cars

Matthew

11 years of experience

53 reviews

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Matthew

11 years of experience

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by Cameron

Audi A4 Quattro L4-1.8L Turbo - Thermostat - Los Angeles, California

Matt was great and helpful once again. Came out got everything done quickly, and gave me good advice on how to proceed with some other remaining issues.

Fred

17 years of experience

389 reviews

Fred

17 years of experience

by Tim

Audi S5 V6-3.0L Turbo - Thermostat - Spring, Texas

What a professional! I was very impressed with Fred's skills, communication, and demeanor. A great experience.

Gary

27 years of experience

226 reviews

Gary

27 years of experience

by Donell

Audi A4 L4-1.8L Turbo - Thermostat - Travis AFB, California

Gary arrived early and took the time to explain what was wrong with my car. He was very professional and very respectful. Very knowledgeable and an outstanding mechanic. He was able to fix my 2002 Audi A4. I was very satisfied with the repair the he completed. (Cooling system/temperature passage replacement). I would definitely recommend him to my family and friends with their automotive problems. Donelle

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