Replace the Camshaft Position Sensor (CMP), which is super easy to locate and remove:
. Remove engine cover (4 hex cap head bolts). I use a 5 mm Bondhaus Hex Driver.
. Locate Camshaft Position Sensor, which is just below the valve cover on the driver's side of the head. You will have to remove the air filter cover, AIT Sensor connector, air intake, and hose going to the valve cover--move the assembly aside.
. Remove sensor connector and old sensor, using a 10 mm socket, 6" extension, and 1/4-inch drive ratchet wrench.
. Wipe the inside of the sensor's hole with a rag.
. Lightly coat the O-ring on the new sensor (e.g. BDW/Intermotor CSS1464) with engine oil.
. Install new sensor, tighten 10 mm mounting bolt, and reattach connector.
. Clear codes in the ECM, using a code reader.
FYI, the Crankshaft Position Sensor (CKP), which is located on the back of the engine block, uses the identical sensor. The CKP is much more difficult to get to, however. CMP failure is a common problem on these cars, where the CEL comes on and the engine will crank but not start.
Pictures:
http://www.paulstravelpictures.com/N...ement-038.html