Shakes really bad and sputters from the muffler, codes P0024 and P0363

Hi and thanks for using 2CarPros.

Based on the codes, this has nothing to do with the transmission, but rather a timing issue with the VVT (Vanos) system on the vehicle. In general, the camshaft position sensor is recognizing an exhaust cam timing issue. That is what the P0024 is related to.

As far as the P0363, I feel confident it is the result of the cam timing issue. This code is a generic code meaning there is a misfire in one or more of the cylinders. When this happens, the power control module (PCM) turns off the fuel to the affected cylinder to prevent damage to the catalytic converter. That is why it is running rough and you hear that sound from the exhaust.

Now, what is the cause. VANOS is BMW's solution to variable valve timing (VVT). The system is both hydraulic and mechanically operated. The hydraulic solenoid valves are mounted through the upper timing case front cover There are two solenoids per cylinder head to control the oil flow to the camshaft ports for the intake and exhaust VANOS units. If one of the ports is plugged, this can be the result. Also, if one of the solenoids has failed or the sensor itself.

If you look at picture 1, it shows the locations of the camshaft sensors. Confirm there are no damaged, corroded, or loose connections to the sensors.

Here are the directions for replacing the exhaust camshaft sensor. The attached pictures correlate with these directions.

Necessary preliminary tasks:
- Read out fault memory of DME control unit; if necessary, work through test schedules
- Switch off ignition.
- Remove acoustic cover
- Remove left ignition coil cover

See Picture 2

Release plug connector (1) and pull off.

See Picture 3

Release screw.
Remove pulse generator (2).

Installation Note:
Replace sealing ring and coat with anti seize agent.

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Oil condition can play a role in this, too. Dirty oil over time can cause restriction in the system preventing the adjuster to work. Make sure the oil is clean and full. Check the sensors first and let me know what you find.

Take care,
Joe