How does the crank position sensor work on a Mercedes?
The crank position sensor is what monitors the speed of how fast the crankshaft is rotating. Based on speed, the crank sensor sends information to the ignition system to provide the right amount of fuel needed to keep the crankshaft working.
What happens if the crank on a Mercedes Benz goes bad?
Symptoms of a defective crankshaft position sensor on a Mercedes-Benz. Failed crankshaft position sensor can also impact the idling, the acceleration, or even your transmission shifting. In some cases, it can cause your transmission to go into limp mode. You may also notice an increase in engine vibrations.
What are symptoms of bad crankshaft position sensor?
Problems with the crankshaft position sensor will often present as problems with engine timing. If you think your sensor has failed, here are some common symptoms of a bad crankshaft sensor that can help you in determining whether or not it has failed. As the engine speeds up, there needs to be adjustments to spark timing and fuel injection.
How to change the crankshaft position on a Mercedes Benz?
Unplug the electrical connector from the CPS sensor. Squeeze the connector and pull it away from the CPS sensor. This opens in a new window. Remove bolt. Remove the crankshaft position sensor. You will have either an E8 or E10 bolt that holds the CPS sensor in place.
The crank position sensor is what monitors the speed of how fast the crankshaft is rotating. Based on speed, the crank sensor sends information to the ignition system to provide the right amount of fuel needed to keep the crankshaft working.
Symptoms of a defective crankshaft position sensor on a Mercedes-Benz. Failed crankshaft position sensor can also impact the idling, the acceleration, or even your transmission shifting. In some cases, it can cause your transmission to go into limp mode. You may also notice an increase in engine vibrations.
What causes the fuel pump to not start?
The fuel pump is running and delivering normal pressure to the engine But, with all that working your engine still will not start. So, the most likely cause, is that the fuel injectors are probably not opening. The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.
What do I need to check fuel pressure in a Mercedes Benz?
Checking the fuel pressure is very simple. For this test, you will need a fuel pressure gauge. What you need is a fuel pressure gauge with Schrader valve adapter. A great and affordable gauge that we have used in the past is this Actron Fuel Pressure Gauge which works on Mercedes-Benz cars.
What are the symptoms of a bad crankshaft position sensor?
Cost of Replacing a Bad or Failing Crankshaft Position Sensor. Common signs of a faulty crankshaft position sensor include issues starting the vehicle, intermittent stalling, and the Check Engine Light coming on. Our certified technicians can come to you and diagnose the problem.
Where is the crankshaft position sensor on a Mercedes Benz?
Locate the crankshaft position sensor (CPS) on driver’s side, towards the rear of engine. Back of engine, near the firewall. This opens in a new window. Unplug the electrical connector from the CPS sensor. Squeeze the connector and pull it away from the CPS sensor. This opens in a new window. Remove bolt. Remove the crankshaft position sensor.
How much does it cost to replace the crankshaft position sensor?
Crankshaft Position Sensor Replacement Cost? While the prices vary based on your location the average cost of replacing the crankshaft position sensor at an auto mechanic or the Mercedes-Benz dealership vary between $250 and $400. The crankshaft position sensor cost between $100 and $150 at the dealership, that’s for the parts only.
What are fault codes related to the crankshaft position sensor?
Fault codes related to the crankshaft position sensor are: P0335 Crankshaft Postion Sensor A Circuit Malfunction P0336 Crankshaft Position Sensor A Circuit Range / Performance P0337 Crankshaft Position Sensor A Circuit Low Input P0338 Cranshaft Position Sensor A Circuit High Input P0339 Crankshaft Position Sensor A Circuit Intermittent