Posted on 4/28/2025
It’s easy to overlook the small components in your engine—until one of them stops working. The crankshaft sensor is a perfect example. This compact part quietly monitors the rotation of your engine's crankshaft, but when it fails, your vehicle can turn from reliable to unpredictable in a hurry. If your car is suddenly hard to start, stalling for no reason, or just not running like it used to, the crankshaft sensor could be the hidden issue that’s throwing everything off. Why the Crankshaft Sensor Is So Important The crankshaft position sensor measures the exact speed and position of the crankshaft as it turns. This information is critical for the engine control unit (ECU), which uses it to time spark and fuel injection precisely. When the sensor is accurate, your engine runs smoothly. When it isn’t—all sorts of issues can appear. This sensor helps determine: When to fire the spark plugs When and how much fuel to inject Engine sp ... read more