A car thermostat that is in need of repair can cause a number of significant and expensive associated repairs if left unattended, however to fix a car thermostat usually can be completed very quickly and is quite inexpensive. In most instances a car’s thermostat fails and sticks in either an open or closed position – a thermostat that is stuck in the open position will usually result in the vehicle having no heat when the car’s heater is turned on, and a thermostat stuck in the closed position will cause a car to overheat. The result of a thermostat stuck in the closed position can be extremely devastating and may cause blown hoses, the car’s water pump to fail and in the worst case a blown head on the car’s engine. It is because of this that it is critical to fix a car thermostat as soon as it fails to prevent what can be incredibly expensive repairs.
The first step to fix a car thermostat is to acquire a new thermostat from your local auto parts store that is an exact match for your car’s year, make and model. Once the new thermostat has been purchased it is necessary to assemble the tools needs to make the repair, which are basically little more than a wrench or socket set and a bucket. It is very important to wait until your car’s engine has cooled totally before attempting to fix a car thermostat to prevent being burned, either by hot engine components or by engine coolant.
In general terms, your car’s thermostat is usually located at the lower intake manifold and is covered by a thermostat housing which is bolted to the engine. Place a bucket or some other container beneath the lower intake manifold to catch any engine coolant that may leak and remove the nuts from the thermostat housing to expose your car’s thermostat. Take note of how the old thermostat is positioned so you can install the new one in the appropriate manner. The thermostat may be able to be removed by simply using your fingers, but if not it can be gently pried out using a screwdriver. Discard the old thermostat and install the new one in the exact same position, and then reattach the thermostat housing and tighten it securely.
The last step to fix a car thermostat is to replace any coolant that may have escaped and test your repair by running the car’s engine until it is hot. If all is well – the car is not overheating and the car’s heater is blowing good heat the repair is complete and you have been able to fix a car thermostat in less than 30 minutes in most cases.