Where is the thermostat on a 2003 VW Jetta?
Locate the thermostat housing on the front of the engine block, connected to one of the radiator hoses. Unbolt the housing with the 3/8-inch ratchet and socket. Pull the thermostat and its O-ring out of the housing.
Where is the thermostat located on a 2001 Volkswagen Jetta?
Locate the thermostat housing by following the upper radiator hose from the radiator to the location where the hose connects to the engine block. The cover that the hose connects to is called the thermostat housing.
Where is the thermostat located on a 2000 VW Jetta?
The thermostat is under the housing. Pull up on the thermostat housing and hold the radiator hose vertical to push the coolant back into the radiator. Push the hose and the housing off to the side to access the thermostat.
Where is the thermostat on a VW Jetta?
Figure 1 The thermostat is located under the thermostat housing (yellow arrow) behind the alternator. Once the coolant is drained from the engine, use a pair of hose clamp pliers to loosen and remove the hose clamp (green arrow) from the radiator hose. Twist the hose and pull it off the thermostat housing.
Where is the thermostat located on a Volkswagen Jetta?
Do you have to drain all coolant when changing thermostat?
With a normal top-mounted thermostat you need drain only part of the cooling system . Do not drain it while the engine is hot — you may be scalded. Wait for the engine to cool. Drain the coolant from the radiator tap, or from the bottom hose, until it is below the level of the thermostat housing.
What are some of the 2003 VW Jetta thermostat problems?
The thermostat on a 2003 Volkswagen Jetta opens and closes depending on the temperature of the coolant. When the thermostat fails, it gets stuck in either an open or a closed position. Either way, the coolant will store too much heat, and the engine could overheat as a result.
What should I do if my VW Jetta overheats?
If your Jetta seems to be overheating, one affordable option is to replace the thermostat. The thermostat is inexpensive, and replacing it is a straightforward procedure that you can do yourself using basic tools and materials.
How do you fix the temperature gauge on a VW Jetta?
Fill the radiator with the 50/50 pre-diluted coolant and reattach the radiator cap. Start the engine. Turn the heater to its highest setting and run the Jetta until the temperature gauge reaches the halfway mark of the gauge. Let the engine cool for at least two hours.
How do you drain the coolant from the thermostat?
Put the large drain pan under the radiator and open up the drain valve on the base of the radiator with your hand. Tighten the valve once all of the coolant has drained. Locate the thermostat housing on the front of the engine block, connected to one of the radiator hoses.