Crankshaft Position Sensor
The crankshaft position sensor determines the position of the crankshaft, that is, its rotation angle. It usually works in conjunction with the camshaft position sensor to determine the basic ignition timing. When the engine ignites and which cylinder it fires from both require a signal from the crankshaft position sensor, as it detects the piston's position at top dead center.

Symptoms of a Faulty Crankshaft Position Sensor
Simply put, if the crankshaft position sensor is faulty, it cannot determine the crankshaft rotation angle. The engine control unit (ECU) will not receive a signal from the crankshaft position sensor, and to protect the engine, it will not ignite or inject fuel. The symptoms will be no high-voltage electricity, no fuel injection, and the car will not start. Of course, the most obvious symptom is the engine malfunction light illuminating on the dashboard.
Owner's Report: The engine starts normally when cold and warm, but after driving at high speeds for a while, it becomes difficult to accelerate, and accelerating actually reduces the engine speed.

Crankshaft Position Sensor Installation Location
For engines with a distributor, the crankshaft position sensor is usually installed inside the distributor; for engines without a distributor, the crankshaft position sensor is generally installed on the transmission clutch housing, located on the left rear of the engine block. The crankshaft position sensor is a very important part of the engine components. During routine vehicle maintenance and repair, it is essential not to neglect checking the crankshaft position sensor to prevent unexpected situations that could adversely affect your driving.