This little guy listens for engine knock – that's a pinging or rattling sound, almost like marbles inside the engine. It's a vibration sensor, really. It picks up those specific frequencies that indicate the fuel – air mixture is detonating instead of burning smoothly. It then sends a signal to the engine control unit, your car's computer. The computer uses that signal to adjust the ignition timing – when the spark plugs fire. Basically, it retards the timing a bit. Think of it like this: if the engine is starting to knock, the computer wants to slow things down a little to prevent damage. It's a crucial part of keeping everything running efficiently and preventing serious problems. It's a feedback system; the sensor tells the computer what’s happening, and the computer makes adjustments. It’s really important because uncontrolled engine knock can destroy an engine pretty quickly. It's like hitting your engine with a hammer repeatedly. The knock sensor acts like a shield, preventing that damage by telling the computer to adjust. If it fails, the engine could run lean and overheat, or experience significant internal wear. You’ll notice if a knock sensor goes bad usually through a check engine light, possibly accompanied by reduced power or poor fuel economy. Sometimes, you might actually hear the knocking sound itself, especially under load or acceleration. You can find these pretty easily online, places like Fixparts Online carry them, but it’s best to get it diagnosed properly first to make sure that is the issue. Your assurance of quality: Knock Sensor (MPN ADN17210) comes with a 12-month warranty!

About Blue Print

Blue Print provides a comprehensive range of precision-engineered replacement parts for Asian, American, and European vehicles, known for their quality and exact fit.

Why Choose Blue Print?

• We offer a really wide range of parts, so you're likely to find what you need all in one place. • Blue Print parts are made to the same quality as original equipment, without the high price tag. • We're known for our reliable delivery – getting your parts to you quickly is a top priority. • Our team has years of experience and can help you find the correct part for your vehicle, every time. Drive with confidence – choose Blue Print parts at FixParts Online.