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      08-22-2014, 10:42 AM   #36
Torgus
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Drives: E90 & E92 with 487 ftlbs of tq
Join Date: Jun 2012
Location: Boston, MA

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2007 BMW E92  [5.00]
Quote:
Originally Posted by zero2sixtyZ View Post
Walnut blasting is definitely good. I've heard the best intervals are around 35-40k. It's definitely considered maintenance on these cars because of the direct injection, since fuel doesn't help clean the valves. I've heard the BMS OCC will help with some blowby / carbon, but not all.

2A87 Outlet-Vanos variable cam control test + 3100 boost-pressure control, deactivation

Basically, the VANOS sensors get clogged or dirty, if not fail, and need to be cleaned/replaced. Happens under WOT and it won't allow the turbos to spool until you restart the car.

Been happening more frequently at 77k. It's a quick fix but I haven't had the time yet. I've purchased new bolts and O-rings just in case I can get away with cleaning them.

Here's the DIY:
http://www.e90post.com/forums/showthread.php?t=486201
FWIW my BMS OCC is always bone dry, I guess maybe a light coating on the walls. If anything it's just a pain to get the bottom 1/2 on and off when I do oil changes.

At least cleaning/replacing the vanos looks quick and easy to do!
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