What causes a Volkswagen Jetta head gasket to blow?
If your Jetta’s engine gets hot enough, the coolant will begin to boil over and manifest itself as steam coming up from under the hood. It does this to relieve the pressure on the cooling system before lasting damage can be done to it. 3. Blown Head Gasket
What happens if you overheat a VW Jetta?
Overheating can cause a lot of expensive damage to the engine. A blow head gasket or a cracked head/block are much more expensive to repair than a thermostat or water pump. Your Jetta’s cooling system works by cycling the engine coolant from the engine through the radiator. The water pump pushes the water through the entire system.
How does the cooling system work on a VW Jetta?
Your Jetta’s cooling system works by cycling the engine coolant from the engine through the radiator. The water pump pushes the water through the entire system. The thermostat opens up once the engine reaches operating temperature and allows coolant in. If any part of this system fails, your Jetta will eventually overheat.
Why is my coolant boiling out of my overflow tank?
This is most likely the result of a failing fan switch relay or a failed thermostat. The thermostat is a component that regulates the flow of coolant through the motor based upon specific temperatures. When the engine reaches a certain temperature, it opens allowing coolant to flow through the radiator and then to the motor.
What are the symptoms of a Volkswagen Jetta overheating?
If your Jetta is run for too long of a period while overheating, the head gasket may blow. Bad head gasket symptoms include white smoke coming from the tail pipe, rough idle, and oil in the coolant. Shutting down before it overheats, or as soon as you see that it is overheating will usually prevent this from happening.
What can cause a blown head gasket on a car?
In certain cases, a symptom might show due to multiple failures within the engine. Examples could include the following: Overheating could be caused by a restricted radiator, which can get worse the farther you drive along. Coolant in the oil, usually blamed on head gaskets, could actually be due to problems with the intake gasket.
Why is my VW Jetta making black smoke?
Engine loss of power, black smoke from exhaust and pinging noise from engine vehicle stalled a few time in traffic almost causing an accident with other vehicles driving vehicle to work, started making noise and decided to drive to vw dealership. Dearlership first diagnosed the problem as a bad clutch.
What causes an exhaust light to come on on a Volkswagen Jetta?
The exhaust flap is sticking in the open position, thus causing warning light on dash to come on. Tl-the contact owns a 2009 Volkswagen Jetta. The contact stated that the engine light illuminated. The vehicle was taken to the dealer. The dealer performed a diagnostic which located the failure at the exhaust control module.