What is an engine without a crankshaft or a crankshaft position sensor? These components are vital for the engine’s ability to produce power and move a vehicle.
The crankshaft position sensor plays a critical role in engine management. It collaborates with other parts, such as the Powertrain Control Module (PCM) in the car’s engine compartment, to generate the necessary power for the engine.
Even a minor fault in the crankshaft position sensor can pose significant problems for the engine, potentially preventing it from starting. Additionally, various symptoms of a malfunctioning crankshaft position sensor are outlined in the following sections.
Symptoms of a Faulty Crankshaft Position Sensor
When there is a disruption in the interaction between the crankshaft sensor and the Powertrain Control Module (PCM), it can cause the vehicle to stall, misfire, or even fail to start eventually. Some signs of a faulty crankshaft sensor include:
1. Check Engine Light Activation
The Check Engine light can be triggered by various issues, not just a malfunctioning crankshaft sensor. However, it is one of the most noticeable signs of a defective crankshaft sensor.
If your vehicle’s Check Engine light comes on and stays illuminated for a while, it’s important to diagnose the issue. If you are unsure of the cause, consult a professional auto mechanic or technician for an accurate assessment.
2. Excessive Vibration
One of the crankshaft position sensor’s roles is to monitor and reduce engine vibration to ensure a steady power output. A faulty sensor can cause the engine to vibrate excessively.
When this happens, the vehicle’s mileage may become difficult to measure accurately, making it essential to address the problem promptly.
3. Reduced Engine Acceleration
A faulty crankshaft position sensor can also lead to reduced engine acceleration. The interruption in communication between the sensor and the PCM affects the timing of cylinder position determination, which in turn hampers the vehicle’s acceleration and speed.
4. Engine Stalling/Backfiring
Disruption in the interaction between the crankshaft position sensor and other engine components can cause the vehicle to backfire and stall. If the engine shuts down shortly after starting or stalls while driving, it is likely due to a faulty crankshaft sensor. This issue might seem minor initially but can lead to severe engine damage if not addressed quickly.
5. Engine Start Difficulty
Difficulty in starting the engine can also stem from a range of issues, including electrical faults. If a vehicle fails to start, it’s important to check the wire connections and plugs. However, a malfunctioning crankshaft position sensor is a common culprit for this problem.