turns out the VANOS bolts were sheared off and coming out.. so the noise that was intermittent, was one of the bolts coming out (tapping the actual side) and the code was from the cam being loose.
Took it to local BMW dealer, and under warranty, they replaced the vanos unit and dropped the pan to get the bolts out.
I dodged a bullet there!
They still have the car but expecting to pick up soon.
Im still wondering about the electrical issue, I have a feeling it may be GM5 unit.
|