Why are there two sensors on the crankshaft?
One of the first things they teach in any diagnostician or engine mechanics course is about two main sensors: the crankshaft position sensor and the camshaft position sensor. The reason is, these two play a vital role in getting the engine to start in the first place, and to keep it idling and running at a constant, smooth pace.
How does the cps read the crankshaft position?
As the name clearly suggests, the CPS reads the position of the crankshaft at any given second. That data is then fed to the engine’s electronic brain, which uses the position of the Crankshaft to determine which piston is at what point in the cycle.
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What will a bad crankshaft position sensor do?
The most common symptom associated with a bad or failing crankshaft position sensor is difficulty starting the vehicle. The crankshaft position sensor monitors the position and speed of the crankshaft and other parameters that play an important role when starting the engine.
What makes the crankshaft position sensor go bad?
One likely cause of crankshaft position sensor failure is exposure to extreme heat. Others are vibration causing a wire to fracture or corrosion on the pins of harness connectors. Many modern crankshaft sensors are sealed units and therefore will not be damaged by water or other fluids.
How do I access the crankshaft positioning sensor?
- Ensure the engine is cool and the ignition switch is off
- Detach the negative terminal from the battery.
- to able to gain access to the
- Unplug the crankshaft position sensor electrical connector.
- Lose the mounting bolt (s).
How do I check a crankshaft position sensor?
Check the crankshaft sensor for an out-of-range or irregular signal by connecting the computer scanner to the electrical plug on the sensor. Place the scanner in the right mode by inserting the year, make and engine size into the computer. Rotate the knob down to “Crankshaft sensor.”.