A friend of mine has a 3.0 m3 which is having low down power problems. He has had a new vanos unit fitted which did not solve the problem. It has been rolling roaded and it is found that the Vanos is not advancing the cams when needed. so basically the Cams are retared all the time. It has been manual advanced which can be done through the wiring loom and it advanced them ok so at least the vanos is working. It seems that the vanos ecu is not controlling the vanos as needed so no communication is being made to the vanos. The main ecu and vanos ecu have been swapped so we know they are ok. Any suggestions guys. please please please
its my understanding that the vanos unit and vanos solenoid are two different things, did you order two new parts? or only one single part? the solinoid is a different part number than the vanos unit. the mechnical part of the solenoid fails not the electrical part, (its suppose to extend and detract freely) the piston fatigues after time and even though you may have a pefrect electrical connection it will still cause performance issues.
here is what your looking for i believe part number 3
The vanos cost £1679 GBP ($2900 USD) (excluding fiting) I am assuming that it included the solenoids. When the cams where advanced manually it worked fine. I will check with the BMW dealer tomorrow to make sure the solenoid was included.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.