It s not hard just have to move a few things out the way just to get your hands to fit.
E46 vacuum control valve.
In my case it turned out to be exactly that.
Only 4 left in stock order soon.
Also when the engine and ignition are off the valve in the control switch the one under the manifold appears to be open the line between the check valve and the vacuum switch holds neither vaccum nor pressure when applied with a vacuum test pump which according to bavauto s instructions should not be the case.
Buy vacuum pressure control valve 11747810831 1174 781 0831 for bmw mini e36 e46 x5 e70 e91 r60z1 e90.
In this video i will go over fixing the major vacuum leaks that.
If you re running into idling issues on your e46 m3 a dirty throttle body or idle control valve icv may be the problem.
Bmw air injection inject check vacuum control valve oem e34 e36 e38 e39 e46 z3 5 0 out of 5 stars 3.
Follow up video on the po411 lean code and check engine light.
This is a quick video on how to replace a check valve and vacuum line.
Shows how to remove your icv.
Diy on my 2002 330i.