Recently swapped a new vanos actuator onto the head..the one that spins and turns the gear for the shaft next to the intake cam. How do you initially set this when you have the cams locked in and tool inserted through the flywheel? I installed it and started attempted to start the car but it wouldn't start. Reset the timing, and rotated the solenoid until the gear was resting against the upper stop, and the car starts but idles rough and hunts for a constant rpm. Any guidance for this?

 

Is it supposed to be set in the middle for 90btdc?

 

After much research, I have found the answer to my own question. There is no set position for this when it is installed. Once the valvetronic actuator is replaced, you must perform valvtronic adaptation with a scan tool for the computer to reset the valvetronic stops. Now I'm off to solve other issues with my r56.

 

Hi Griffsyj,

How do you perform valvtronic adaptation with a scan tool? When I did an exhaust valve job by removing the head because it had a hole in it but when I installed the vanos back onto the intake camshaft close as possible based on the video, my car started right up