Crankshaft Position Sensor

Crankshaft position sensors (CKP) are crucial components in your vehicle’s engine management system. Together with camshaft position sensors, these sensors provide precise data on the position and speed of the crankshaft and camshaft to the engine control module (ECU). The ECU uses these signals to determine the correct timing for fuel injection and ignition, ensuring optimal engine performance, efficiency, and emissions control.

FridayParts carries an extensive selection of high-precision crankshaft position sensors for your vehicles of various brands, including Hyundai, Sumimoto, Volvo, Honda, Hitachi, Ford, Nissan, Toyota, Komatsu, John Deere and more. Our selection of crankshaft position sensors is built to rigorous standards and with advanced testing equipment, ensuring accurate detection of the engine speed.

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What Is A Crankshaft Position Sensor?

A crank sensor is an electronic device in an internal combustion engine to monitor the crankshaft position, angle and engine RPM. It transmits this information to the engine control module (ECM) and this information is used to make adjustments to ignition and fuel injector timing to maintain engine performance and efficiency. The crankshaft position sensor monitors crankshaft position, angle, and engine RPM, and transmits this information to the engine control module (ECM). This information is used to make adjustments to ignition and fuel injector timing to maintain engine performance and efficiency. The ECM also receives data from the camshaft position sensor, which allows the crankshaft and camshaft in an engine to be synchronized if it is equipped with variable valve timing (VVT).

How Does A Crankshaft Position Sensor Work?

• Monitors the rotation speed and position of the crankshaft.
• Utilizes either a magnetic sensor and reluctor wheel or a Hall-effect sensor to generate a voltage signal.
• Provides the ECU with the precise crankshaft angle for accurate ignition timing and fuel injection control.
• Typically mounted on the engine block, timing cover, or bell housing.

The crankshaft position sensor works together with the camshaft position sensor to ensure your engine starts quickly, runs smoothly, and maintains proper timing under all driving conditions.

What Happens If A Crankshaft Position Sensor Goes Bad?

As the crankshaft sensor ages, it can begin to wear and eventual fails, causing the signals to the engine computer to become unreliable or insufficient. When the crankshaft position sensor fails, it stops communicating with the ECM entirely — but even a weakened signal is enough to compromise your engine's performance. A faulty or failing crankshaft position sensor can throw off the ignition and fuel timing, which often results in sluggish acceleration. Drivers may also experience a rough idle, engine misfires, unexpected stalling, or a noticeable drop in fuel efficiency. Worst of it , if the sensor stops functioning entirely, the vehicle may refuse to start, potentially leaving the driver stranded without warning.

If you've noticed any of these issues, or if your Check Engine light comes on, your crankshaft position sensor may need to be replaced. At FridayParts, you can source a vast inventory of aftermarket crankshaft position sensors, camshaft position sensors and other electrical system parts to help your vehicle run at its best performance.