We talked about the water pump a few blog posts back, so let’s talk about the thermostat now. East Coast EuroWerks advises that most thermostats last about 10 years before they need to be replaced. If you have kept your European automobile for over a decade and you notice any of the signs below, it’s probable that the thermostat has gone bad and needs to be replaced. This crucial cooling system part keeps track of the engine’s temperature and releases coolant into it when it needs it.
1. Corroded Thermostat
You will have to visually inspect your thermostat to know if this sign is happening. The thermostat opens and closes a valve to release the coolant into the engine. The valve can get stuck closed in older thermostats. When this happens, the engine coolant leaks through the valve and pools around the thermostat. Unfortunately, this liquid corrodes the thermostat and causes damage. You will be able to see the corrosion on the thermostat and its housing.
2. Engine Coolant Leak
Oftentimes, this minor leak turns into a major one and you end up with coolant spots on your garage floor. It’s important to know the color of your engine coolant so you can identify whether it is leaking out of the thermostat or another cooling system part. You can check the color of your engine coolant by popping the hood on your European automobile when the engine is cold. Look at the coolant in the radiator’s overflow reservoir to determine its color.
3. Erratic Temperatures
Aside from leaking coolant, an old thermostat can also begin to malfunction. It might not read the engine’s temperature accurately and release coolant when the engine doesn’t need it. This can cause your engine to run unusually cold. It may also fail to release the coolant when the engine needs it, and this will cause the engine to overheat. Unfortunately, you will see the erratic temperature changes being reflected on the temperature gauge on the dashboard.
4. Overheating Engine
Finally, a faulty thermostat will cause your engine to overheat very quickly after you start it. This is a sign that the thermostat has not opened the valve to release the coolant into the engine. Unfortunately, your engine’s temperature will rise until it overheats, which is above 220 degrees Fahrenheit on average.
East Coast EuroWerks in Wilmington, NC, is here to help with all of your European automobile’s service and repair needs. Call us today if you suspect you have a bad thermostat.