This little guy basically measures the temperature of the engine coolant, which is the fluid circulating through your engine to keep it from overheating. It sends that temperature reading as an electrical signal to the car's computer – we call that the Engine Control Unit or ECU. The ECU uses that information to make all sorts of adjustments, like how much fuel to inject, when to turn on the cooling fan, and even how the ignition timing works. It's a pretty simple part, but provides crucial data. Think of it like this – it’s the engine’s thermometer. Without an accurate reading, the computer can’t properly manage how the engine runs. It affects everything from fuel economy to performance and even emissions. It’s generally located somewhere near the thermostat housing, usually screwed directly into the engine block or coolant passage. Sometimes they are integrated into the thermostat assembly itself. If this sensor goes bad, it can cause a lot of problems. You might notice your engine running rich – meaning it’s using too much fuel – or running lean. That can lead to poor gas mileage, rough idling, or even engine damage. Sometimes it will cause the cooling fan to not come on when it should, leading to overheating. You’ll notice if your temperature gauge is reading incorrectly, fluctuating wildly, or staying consistently high or low. A faulty sensor can also trigger the Check Engine light on your dash. You can usually find a replacement pretty easily, even sites like Fixparts Online carry them. It's a relatively inexpensive part to replace, and getting a new one can save you from bigger headaches down the road. Shop with confidence: Coolant Temperature Sensor (MPN 01806) comes with a 3 year manufacturer guarantee!

About Febi

Ferdinand Bilstein is well known for reliability and is trusted by repair professionals worldwide.

Why Choose Febi?

• Febi parts are made to the same standards as original equipment, so you get reliable quality without the high price. • We offer a huge range of parts – everything from engine components to brake parts and even small wear items – all in one place. • Febi has been around for over 75 years, so we know what mechanics and drivers need to keep vehicles on the road. • You’ll find parts for many different makes and models, including popular European cars, making it easy to find what you need. Performance you can rely on – Febi parts from FixParts Online.