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E90/E91/E92/E93 (2006 - 2013)
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Old 05-28-2015, 06:50 PM
brewder brewder is online now
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Location: Allentown PA Area
 
Join Date: May 2010
Posts: 789
Mein Auto: 2011 328i xDrive
N52 Vanos Solenoid HELP!

Hello,

Looking for some education/advice.

First some background. 2007 328xi N52 with 148k on the clock. (Very well taken care of)

Somewhere around 58k miles, I had a problem with the Vanos solenoids (momentary loss of "power" while at highway speeds). The dealer removed and cleaned them for me (at the time I wasn't BMW-versed nor could I read the codes).

Fast forward to this week. While driving I felt a "hard" stutter like I lost power. Just like the first time this happened. Only this time, I got the "Car on a Lift" icon. Pulled the codes and found these:

2a82 / 2a87 - Vanos
2a94 - Crankshaft position

I cleared the codes, and pulled my Vanos and cleaned them with brake parts cleaner. Reinstalled and did a test drive. The "car on lift" warning returned. Pulled the codes and this one returned:

2a94 - Crankshaft position

Drove it again today, and now power is reduced, and the SES light came on. Still, the 2a94 is my only code.

I read somewhere online that the Vanos play a direct role with the Crankshaft position sensor.

So.. anyone think this could be a really easy fix by replacing both Vanos solenoids, or will it be the more b*tch of a project in replacing the Crankshaft sensor?

Here's something that just struck me that I will definitely try first... I also have a 2011 328xi N52... I may pull the two solenoids out of it and put them in the 2007 and see what happens. I guess that will direct me to my answer?

This post is more for me to learn more how/why/if the Vanos operation is related to the crankshaft position sensor and potentially benefit from any experience gained here.

Looking forward the education from the 'Fest!
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  #2  
Old 05-28-2015, 07:21 PM
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CALWATERBOY DUE CALWATERBOY DUE is online now
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Location: Fog City, California
 
Join Date: May 2014
Posts: 2,495
Mein Auto: 09 E93 335i somewhat mod
.

Maybe you've seen THIS

When VANOS solenoids were cleaned was THIS also done?

.

Last edited by CALWATERBOY DUE; 05-28-2015 at 07:32 PM.
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Old 05-28-2015, 09:06 PM
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SilverX3 SilverX3 is offline
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Location: Australia
 
Join Date: Sep 2005
Posts: 3,648
Mein Auto: 130i & E92 325i, E90 SOLD
Vanos solenoid is cheap

Only $150 each

get both replaced

Fairly easy to diy
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