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      12-24-2018, 08:44 PM   #7
rowsdower's Avatar

Drives: 2011 128i 6MT Sport
Join Date: Jan 2017
Location: Texas

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Originally Posted by SayHack View Post
For the solenoids, did you plug them back correctly. There are two right (one on top and one on bottom), and both have identical connectors....I once accidentally connected them backwards, had some major idling problems...switched the connectors, and the problem was solved.
I did this exact same thing. My car would drive like shit and throw a code for VANOS, but not misfire codes. Once it threw the code, it would run fine (I assume because it stopped using VANOS).

The wire coming from the exhaust side of the head plugs into the intake solenoid, and the wire coming from the intake side of the head plugs into the exhaust solenoid. I just assumed the exhaust solenoid would use the wire from the exhaust side of the head. But you know what happens when you assume...