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Car Thermostat Replacement Service
How much does a Car Thermostat Replacement cost?
On average, the cost for a Volkswagen Passat Car Thermostat Replacement is $ with $63 for parts and $ for labor. Prices may vary depending on your location.
| Car | Service | Estimate | Shop/Dealer Price |
|---|---|---|---|
| Volkswagen PassatLL Turbo Diesel | Service typeCar Thermostat Replacement | Estimate$ | Shop/Dealer Price$ - $ |
| Volkswagen PassatVL | Service typeCar Thermostat Replacement | Estimate$ | Shop/Dealer Price$ - $ |
| Volkswagen PassatVL | Service typeCar Thermostat Replacement | Estimate$ | Shop/Dealer Price$ - $ |
| Volkswagen PassatLL Turbo | Service typeCar Thermostat Replacement | Estimate$ | Shop/Dealer Price$ - $ |
| Volkswagen PassatVL | Service typeCar Thermostat Replacement | Estimate$ | Shop/Dealer Price$ - $ |
| Volkswagen PassatLL | Service typeCar Thermostat Replacement | Estimate$ | Shop/Dealer Price$ - $ |
| Volkswagen PassatLL Turbo | Service typeCar Thermostat Replacement | Estimate$ | Shop/Dealer Price$ - $ |
| Volkswagen PassatLL Turbo Diesel | Service typeCar Thermostat Replacement | Estimate$ | Shop/Dealer Price$ - $ |
Show example Volkswagen Passat 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 degrees, the valve will open and close as you drive in order to maintain a coolant temperature typically between to degrees Fahrenheit.
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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Sours: https://www.yourmechanic.com/estimates/volkswagen/passat/thermostat-replacement
Get the Best Priced Volkswagen Passat Thermostat
Thermostats available for the following Volkswagen Passat years: , , , , , , , , , , , , , , , , , , , , , , , , , , , , 18, 17, 16, 15, 14, 13, 12, 10, 09, 08, 07, 06, 05, 04, 03, 02, 01, 00, 99, 98, 97, 96, 95, 94, 93, 92, 91, This part is also sometimes called Volkswagen Passat Thermostats. We stock thermostat parts for most Volkswagen models including Jetta, Beetle, Golf, Touareg, EuroVan, Vanagon, Cabriolet, Cabrio, Rabbit, GTI, Rabbit Pickup, CC, Corrado, Eos, Tiguan, Routan, Rabbit Convertible, Fox, Phaeton, Super Beetle, Scirocco, Passat CC, R32, Quantum, Atlas, Golf City, , Transporter, Karmann Ghia, Jetta City and Dasher.
Volkswagen Passat Thermostat Reviews
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Volkswagen Passat B5 FWD T Engine Thermostat Parts
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Racing Thermostat (82C)
Prevent overheating and premature engine wear with a lower opening temperature
- Brand:
- ES#:
- Mfg#:
- MMTS-GTI
$
on orders $49 and up
Allen/Hex Bolt - Priced Each
Install new hardware with your new parts. M7xmm Secures thermostat housing to the block, 2 required.
- Brand:
- ES#:
- Mfg#:
- N
28% off MSRP$ $
on orders $49 and up
Thermostat (87°C)
Prevent overheating and premature engine wear
- Brand:
- ES#:
- Mfg#:
- C
30% off MSRP$ $
on orders $49 and up
Complete Thermostat Replacement Kit
Includes a genuine 87�C thermostat, housing, o-ring and stretch bolts For vehicles with AUG or AWM engine codes only.
- Brand:
- ES#:
- Mfg#:
- CKT
$
on orders $49 and up
Thermostat (87°C)
Prevent overheating and premature engine wear. Includes O-ring
- Brand:
- ES#:
- Mfg#:
- C
$
on orders $49 and up
Thermostat (87°C)
Prevent overheating and premature engine wear. Includes O-ring
- Brand:
- ES#:
- Mfg#:
- C
$
on orders $49 and up
Thermostat (87°C)
Prevent overheating and premature engine wear. Includes O-ring
- Brand:
- ES#:
- Mfg#:
- C
$
on orders $49 and up
Thermostat O-Ring
Ensure a proper seal when installing your new thermostat. 50x4
- Brand:
- ES#:
- Mfg#:
- B
23% off MSRP$ $
on orders $49 and up
Thermostat Housing
Located on the water pump assembly For vehicles with AEB or ATW engine codes only.
- Brand:
- ES#:
- Mfg#:
- B
$
on orders $49 and up
Thermostat O-Ring - Priced Each
Recommended when changing the thermostat
- Brand:
- ES#:
- Mfg#:
- B
$
on orders $49 and up
Complete Thermostat Replacement Kit
Includes a genuine 87�C thermostat, housing, o-ring and stretch bolts For vehicles with AUG or AWM engine codes only.
- Brand:
- ES#:
- Mfg#:
- 06BLKT1
$ $
on orders $49 and up
Thermostat Housing
Located on the water pump assembly For vehicles with AEB or ATW engine codes only.
- Brand:
- ES#:
- Mfg#:
- B
44% off MSRP$ $
on orders $49 and up
Thermostat (87°C)
Prevent overheating and premature engine wear
- Brand:
- ES#:
- Mfg#:
- C
$
on orders $49 and up
Thermostat (87°C)
Prevent overheating and premature engine wear
- Brand:
- ES#:
- Mfg#:
- C
$
on orders $49 and up
Thermostat Housing
Located on the water pump assembly For vehicles with AEB or ATW engine codes only.
- Brand:
- ES#:
- Mfg#:
- B
$
on orders $49 and up
Thermostat (87°C)
Prevent overheating and premature engine wear. Includes O-ring
- Brand:
- ES#:
- Mfg#:
- C
$
on orders $49 and up
More About Engine Thermostat Parts
Your thermostat helps regulate engine temperatures by allowing the coolant to circulate through the radiator once it opens. If it fails, this might mean it never closes, but worst case, it could mean your coolant doesn't get to the radiator. Stay ahead of cooling issues by replacing your thermostat regularly with an OEM thermostat or quality aftermarket thermostat from our selection.
Your Volkswagen Passat relies on a thermostat to control the temperature of the engine. When it goes bad, you&#;ll experience a number of different problems. Some of the most common symptoms of a bad thermostat are no heat, a spiked temp gauge, blown head gasket, and more.
Symptoms of a Bad Thermostat: Volkswagen Passat
There are a few ways that your Passat will tell you that your thermostat is bad. Hopefully you&#;ve caught them before any damage was done. Thermostats are very inexpensive, f you do end up needing one. Here are the most common signs of a bad thermostat.
Overheating
The most common symptom of a bad thermostat is overheating. The thermostat doesn&#;t open up. This keeps the coolant from entering the engine. When this happens, the coolant in the radiator stays relatively cool, and the engine overheats fast.
Blown Head Gasket
If your Passat runs too long without coolant circulating through the engine, the head gasket can blow. Signs of a bad head gasket include:
- rough idle
- bad fuel mileage
- water in the oil
- a lot of white smoke from the exhaust
A head gasket is a very costly and time consuming repair. Hopefully you&#;ve caught your bad thermostat before this has happened.
No Heat
If your Passat has no heat at all, it is entirely possible that the thermostat is stuck open. When this happens, coolant constantly cycles through the engine. On very cold days, this cooling capacity is not needed, and the engine never warms up. Here&#;s more on no heat diagnosis if this is what you are experiencing.
Warning Light or Temp Gauge Spiked
The first sign of a bad head gasket that most people are going to notice is a warning light or spiked temperature gauge. If you&#;ve noticed this, you need to get off of the road and get your Passat&#;s engine shut down as soon as possible, before any lasting damage can occur.
A bad thermostat can cause the temp gauge or warning lights to come on. But, it&#;s not the only reason. Other things that can cause the temp gauge to spike are:
- Low Coolant- If your Passat has been losing coolant, it&#;s possible that you&#;ve finally leaked out enough that the cooling system can no longer do its job.
- Bad Radiator- If the radiator has been clogged enough that coolant can no longer pass through efficiently, your Passat will overheat.
- Water Pump- The water pump is responsible for pushing coolant through the radiator and the engine. When it goes bad, water can&#;t circulate through the cooling system, even if the thermostat is open.
Coolant Leak Around the Thermostat
As pressure builds around a bad thermostat that is stuck shut, you&#;ll notice that there may be coolant leaking around the thermostat housing. This leak is not the cause, but rather a symptom of your Passat&#;s bad thermostat.
Conclusion: Passat Bad Thermostat Symptoms
Replacing a thermostat is a relatively affordable repair. If you have reason to believe it&#;s gone bad, ignoring it will only end up costing a lot more money in the long run.
Good luck diagnosing your Volkswagen Passat. If there is anything that you would like to add, please leave a comment below.
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How to Change the Thermostat on a Passat
The thermostat in the Volkswagen Passat regulates the temperature of the coolant as it flows into the engine. The thermostat is secured to the water pump on the lower half of the engine, and to access the thermostat inside the water inlet housing, you should drive the Volkswagen onto ramps. Allow the coolant time to cool before you work on the vehicle.
Step 1
Place a drain pan under the petcock on the bottom of the radiator. Open the petcock with a pair of pliers, and drain the coolant from the radiator into the drain pan. Close the petcock.
Step 2
Locate the water inlet housing by following the lower radiator hose. Remove the clamp that secures the radiator hose to the housing by using a pair of pliers. Pull the hose off the housing.
Step 3
Remove the nuts that secure the water inlet housing to the water pump using a socket and ratchet.
Step 4
Pull the housing off the water pump. Take note of the thermostat positioning inside the water pump. The thermostat has an arrow on it located between the two studs on the pump. When you place the new thermostat into the pump, make sure the arrow is in the same position it was on the thermostat you removed.
Step 5
Pull the used thermostat out of the water pump. Place the gasket onto the new thermostat, and place the thermostat into the housing.
Step 6
Place the water inlet housing onto the water pump, and secure it using the socket and ratchet.
Step 7
Slide the hose onto the water inlet housing, and secure it using the clamp and pliers.
Remove the radiator cap on the top of the radiator. Place a funnel into the filler spout, and pour the coolant back into the engine. Put the cap back on the radiator.
References
- "VW Passat , Audi A4 Repair & Service Manual"; Eric Godfrey, John H. Haynes;
Things You'll Need
- Pliers
- Drain pan
- Socket set
- Funnel
Writer Bio
Since Zyon Silket has been writing for companies such as SEOWhat, L&C Freelancing and T-Mobile Wireless. He has extensive experience working in supervisory roles within the wireless and Internet technologies fields. Silket is pursuing a Bachelor of Arts in business management and network technologies at Lehigh Carbon Community College.
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