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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)

E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old Yesterday, 07:00 PM
endlessbummer endlessbummer is online now
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Location: Brambleton, VA
 
Join Date: Aug 2013
Posts: 91
Mein Auto: 2008 E90 6-speed
Cleaned my VANOS solenoids

I was impressed with how easy they were to get to. Unfortunately I have to wait until tomorrow to see if there is any improvement. Have a race exhaust installed. The wife and neighbors would not be too trilled to hear it fired up at this hour.

I am hoping it will remedy a nagging idle at start up. The car starts up fine, no CELs, but after about 30-sec to a minute, as the car cycles oil I can hear it 'stumble' as the VANOS does its thing and the engine wakes up.
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  #2  
Old Yesterday, 09:00 PM
sptt144 sptt144 is offline
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Mein Auto: 2009 335i
Cool deal. Let us know how it turns out.
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  #3  
Old Today, 12:35 PM
endlessbummer endlessbummer is online now
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Location: Brambleton, VA
 
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Posts: 91
Mein Auto: 2008 E90 6-speed
Bad new is that it did not eliminate the little stumble when warming up. Good news is that my work did not cause any CEL's and now I know I have clean solenoids. I suppose I could try swapping them as a lot go you guys mention.
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  #4  
Old Today, 12:58 PM
Nerdboss Nerdboss is online now
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Mein Auto: 2011 328i
Quote:
Originally Posted by endlessbummer View Post
I was impressed with how easy they were to get to. Unfortunately I have to wait until tomorrow to see if there is any improvement. Have a race exhaust installed. The wife and neighbors would not be too trilled to hear it fired up at this hour.

I am hoping it will remedy a nagging idle at start up. The car starts up fine, no CELs, but after about 30-sec to a minute, as the car cycles oil I can hear it 'stumble' as the VANOS does its thing and the engine wakes up.
N52 or n54/55?

I also have this weird stumble and shuddering issue on startup. I'm wondering if it's normal. So many people report the same issue but nobody has a fix. I'm taking mine to the dealer soon to see what they can do.
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  #5  
Old Today, 01:38 PM
endlessbummer endlessbummer is online now
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Location: Brambleton, VA
 
Join Date: Aug 2013
Posts: 91
Mein Auto: 2008 E90 6-speed
In my case, it is the N54. I wonder how much of the stumble is exaggerated due to the exhaust. Tomorrow I will try and record it to demonstrate what I am encountering.

this weekend, now that all the parts have finally arrived, will be walnut blasting the valves. We shall see.
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