Next, a quick spray around the outside of the solenoid to wash off the surface oil, then I took the solenoid and stuck the small spray stick from the cleaner up into the end of the solenoid and flushed it out. Seemed to really push a lot of old oil and whatever else out from the solenoid body. MAF and the airbox will have to removed prior to the steps below. For illustration purpose, here is the location of the Vanos-Valve Selenoid (Bank 1 /Cyl 1-4 (Passenger side - US cars) ). See red marks. This would be the location after the MAF housing removed. Here is the picture of the actual Vanos-Valve Selenoid unit. Failure of the VANOS system is a widespread issue that drivers have simply had to deal with over the years. It is critical to remain aware of your BMW’s daily performance so that you can pick up on VANOS issues sooner rather than later. These are just a few of the signs to look for in a failing VANOS system: Rough idling. Reduced fuel efficiency. The typical range for BMW Vanos repair costs is: Minor Repairs – $1200 to $1800 for items like solenoids, sensors, seals/gaskets. Timing Components – $1500 to $2500 for replacement of worn phasers, chains, guides, etc. Full Rebuild – $2500 up to $4000+ for complete Vanos disassembly and rebuild with all new components. How does BMW VANOS solenoid work? May 7, 2023 October 30, 2022 by Carolina. Spread the love. So say you have your Vanos removed along with cam bolts. How much further must one go to completely replace the camshafts? I know I could watch a YouTube vid or whatever but I'd like to hear how much more work it would be to do the cams at that point because I've got a CSL tune, headers/airbox, seems like cams form the holy some are the facts like. 1) Vanos pump helical gear is sharper and longer after 2006 or 2007+. 2) Oil pan is updated after 2007+. 3) Vanos Sprocket is updated somewhere around 2008+ (but thank god this isn't really the updated part that affects the performance or reliability) The vanos position and eccentric shaft position move around with revs and load as they should. Actual and commanded values are within 1 degree. The eccentric shaft value is around 23-24 at idle. (All these values are in degrees) I can hear a faint thunk sound then the value changes to a static 121 commanded 119 actual for the cam timing (both 1. Replace the VANOS assembly’s gear bolts on the units that do not have any loose and/or broken bolts (one side or both as applicable). 2. If the gear bolts on a VANOS assembly are found loose and/or broken, replace the entire VANOS assembly. If the heads of the bolts are broken, the missing pieces must be found and removed from the 9SzO.

how does bmw vanos work