If you re running into idling issues on your e46 m3 a dirty throttle body or idle control valve icv may be the problem.
E46 vacuum control valve.
Diy on my 2002 330i.
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.
I ve tried cleaning the maf sensor intake filter injectors checked for vacuum leaks and added in octane booster crappy ca 91 gas here but my idle was still giving me.
This is a quick video on how to replace a check valve and vacuum line.
Bmw air injection inject check vacuum control valve oem e34 e36 e38 e39 e46 z3 5 0 out of 5 stars 3.
Shows how to remove your icv.
This video is about fixing vacuum leaks and doing some maintenance on my 2002 bmw e46 330ci.
Follow up video on the po411 lean code and check engine light.
In this video i will go over fixing the major vacuum leaks that.
Hps htsvh35 blkx5 black 5 length high temperature silicone vacuum tubing hose 60 psi maxium pressure 3 5mm id 4 5 out of 5 stars 106.