A bad crankshaft position sensor symptoms
The crankshaft position sensor is a sensor on an engine with an Electronic Fuel Injection (EFI ) system, which functions to determine the angular position of the crankshaft and the rotational speed that occurs in the crankshaft.
The data from this crankshaft position sensor is used for various purposes related to the engine control system. Such as to determine how long the fuel injection is to be carried out, when it should give the right time for injection, and when to determine the ignition timing of each cylinder.
Yes, this crankshaft position sensor is a sensor that is quite vital for the remnant of the engine. If the crankshaft position sensor is damaged, the engine will generally have problems such as engine stall and stuttering until it is difficult to start.
This article will share information about bad crankshaft position sensor symptoms on the engine. Check out the info below.
1. The engine becomes difficult to run on
The first sign of a bad crankshaft position sensor symptoms makes the engine difficult to run on, even if it is easy to start. The crankshaft position sensor has an important role in determining the crankshaft's angular position and rotational speed.
And along with several other sensors and parameters, the crankshaft position sensor plays a vital role during the engine starting process. When the crankshaft position sensor is damaged, making the engine run becomes difficult because the ECM cannot process the data sent by the crankshaft position sensor.
2. The engine often stall suddenly
The next bad crankshaft position sensor symptoms are that the engine often stalls suddenly. This crankshaft position sensor generally works by utilizing the electromagnetic system. Therefore, many crankshaft position sensors are made of windings/coils.
Over time, these windings will experience an increase in resistance which is influenced by the surrounding temperature.
When the resistance in this crankshaft position sensor increases, the voltage and electric current will also be blocked, shrink, and even cannot flow. The effect can make the engine often stalls suddenly.
3. The check engine warning lamp is on
The third bad crankshaft position sensor symptoms is the check engine light (Malfunction Indicator Lamp / MIL) ON. Yes, the crankshaft position sensor is a sensor whose position is essential for the ECM to determine ignition timing and fuel injection.
When this crankshaft position sensor is damaged or a malfunction is detected several times by the ECM, the ECM will turn on the check engine warning light on the driver's dashboard panel.
Read also:4. Uneven engine acceleration throughout the engine speed
The fourth bad crankshaft position sensor symptoms is that the engine acceleration becomes uneven throughout the engine speed. The engine rpm can suddenly be stopped or dropped when the gas pedal is fully pressed to accelerate.
When the crankshaft position sensor is damaged, the ECM automatically cannot read the rotational speed of the crankshaft and its position in each engine cylinder. As a result, it will affect when the acceleration is carried out.
5. The engine vibrates when idling and even misfiring occurs
The other bad crankshaft position sensor symptoms is that the engine vibrates when idling. Also, misfiring occurs after the engine is turned off. That can happen when the crankshaft position sensor data needed by the ECM seems abnormal (sometimes appears and sometimes disappears).
As a result, the ECM cannot determine the exact ignition timing and injection into the combustion chamber. This condition often causes the engine to vibrate when idling to misfiring.
6. The engine becomes wasteful of fuel
The last bad crankshaft position sensor symptoms that we knew was that the engine was wasting fuel. As a result, the crankshaft position sensor cannot determine the position and speed of the crankshaft rotation, which makes the ECM unable to determine how long the fuel injection will take.
Even for some conditions, the injector will still inject fuel when the injection time is supposed to be finished. This condition will cause the engine to be wasteful of fuel.