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Where is the coolant thermostat located?
Most cars have a top-mounted thermostat located close to the water pump on the cylinder head. The top radiator hose feeds coolant through the thermostat into the engine. If you can’t locate the thermostat, simply follow the hose until you see the housing containing the thermostat where the hose joins the engine.
How do you change a thermostat in an Audi?
- Step 1 – Remove serpentine belt. Use your 17mm wrench to push the tensioner down, this will allow the belt to come loose.
- Step 2 – Remove the alternator.
- Step 3 – Remove radiator hose.
- Step 4 – Lower radiator hose.
- Step 5 – Remove coolant lines.
- Step 6 – Remove thermostat.
- Step 7 – Install new thermostat.
Where is the thermostat located on a 2003 Audi A4?
The thermostat on the Audi A4 is locating in located below the intake manifold and behind the alternator. To replace the thermostat you will need to drain the coolant and move the lock carrier to the service position.
What is Audi thermostat?
The thermostat in your Audi A4 is a small, but crucial, device for the proper operation of your vehicle’s cooling system. Located between the radiator and the engine, it moderates the flow of coolant into the engine by releasing it when the engine need it the most.
What are the symptoms of a bad thermostat?
Symptoms of a Bad or Failing Thermostat
- Temperature gauge reading very high and engine overheating.
- Temperature changing erratically.
- Coolant leaks around the thermostat housing or under the vehicle.
What will be the symptoms if the thermostat is open?
Symptoms of a bad thermostat Thermostat stuck open: When the thermostat is stuck open, the engine temperature drops below normal when driving, especially on the highway in cold weather. A stuck-open thermostat can also cause lack of heat from the heating system. The Check Engine light may come on too.
What is the thermostat housing?
In many internal combustion engines the Thermostat Housing acts as the coolant outlet, it is normally located on the engine block or cylinder head. As the name implies, this engine component houses the thermostat which regulates the coolant flow.
How much is a thermostat for an Audi A4?
The average cost of a Audi A4 thermostat is between $6.89 and $63.99.
How do I know if my thermostat is stuck closed?
The coolant should warm to the right temperature and begin to flow after 10 to 20 minutes. If it does not start to flow, but the temperature gauge on your dashboard rises, your thermostat is stuck closed. If your coolant flows normally, there may be another cause of your overheating engine.
How do you tell if you have a stuck thermostat?
Checking For the Signs of a Bad Thermostat Look to see if the coolant is swirling/flowing immediately — that means the thermostat’s stuck open. If the coolant doesn’t flow after 10 minutes or so and continues to be stagnant after the temperature gauge indicates it’s hot, the thermostat’s likely stuck closed.
How can I tell if my thermostat is stuck closed?
The coolant should warm to the right temperature and begin to flow after 10 to 20 minutes. If it does not start to flow, but the temperature gauge on your dashboard rises, your thermostat is stuck closed.