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Old 08-05-2019, 12:30 AM
ard ard is offline
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 6,108
ard is on a distinguished road
On other cars (ie S62) the vanos solenoid actuators will get clogged with oil/crud. The screens clog and congeal, the decompose...this all leads to solenoids that are sluggish. They will not achieve the target positions.

Remve them, and clean AGGRESSIVELY with carb cleaner. I will actuate them with a 5V source, paying attention to the sound it makes. You want a nice, loud click/snap. Flush them with copious blasts from a aerosol carb cleaner, not just passively soak...check the sound as you go.

As long as you are taking it out, might as well.
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