Here are detailed instructions on how to find and replace the crank sensor on an E430 with either engine:
M119 V8 Engine
1. Disconnect the negative battery terminal.
2. Remove the air cleaner housing.
3. Locate the crank sensor on the left side of the engine block, just below the cylinder head. It is a black cylindrical sensor with a single wire connector.
4. Disconnect the wire connector from the sensor.
5. Use a 10 mm wrench to loosen the bolt that holds the sensor in place.
6. Remove the sensor from the engine block.
M112 V6 Engine
1. Disconnect the negative battery terminal.
2. Remove the air cleaner housing.
3. Locate the crank sensor on the right side of the engine block, behind the oil filter. It is a black cylindrical sensor with a single wire connector.
4. Disconnect the wire connector from the sensor.
5. Use a 10 mm wrench to loosen the bolt that holds the sensor in place.
6. Remove the sensor from the engine block.
To replace the crank sensor, simply reverse the steps above.
Here are some additional notes about the crank sensor:
* The crank sensor is a critical component of the engine management system. It sends a signal to the engine control unit (ECU) that tells the ECU when to fire the spark plugs and fuel injectors.
* A faulty crank sensor can cause a variety of problems, including engine misfires, stalling, and rough idling.
* If you are experiencing any of these problems, it is important to have the crank sensor checked out by a qualified mechanic.