Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 07-24-2009, 06:50 PM
Smithers34 Smithers34 is offline
Registered User
Location: USA
 
Join Date: Jun 2009
Posts: 7
Mein Auto: 325i
Secondary Air Pump

I have a 2004 325i.

So I have P0411 code Secondary Air Incorrect Flow detected. From searching through here most users on here find cracked vacuum hoses. However, as I look at Realoem and my engine, I cannot see where any vacuum lines attach to the valve.

Part number 7 has no holes or cracks.

What allows part 17 valve to open and close?

Thanks to everyone for your assistance.
Attached Thumbnails
Click image for larger version

Name:	secondaryairdiag.png
Views:	462
Size:	17.9 KB
ID:	194585  
Reply With Quote
Ads by Google
  #2  
Old 07-25-2009, 06:56 AM
mr_bean mr_bean is offline
Officially Welcomed to the 'Fest
Location: NJ
 
Join Date: Mar 2009
Posts: 681
Mein Auto: 2000 328i
There should be a small diameter vacuum line running from #17 to a solenoid valve and then to the manifold.
#1 in this pic should be the same part as #17 in your pic.

Or, in some cases, #17 is just a check valve. The air pump pressure is what forces it open.

First things first, make sure the air pump is functioning.
Attached Thumbnails
Click image for larger version

Name:	realoem.png
Views:	386
Size:	16.0 KB
ID:	194627  

Last edited by mr_bean; 07-25-2009 at 07:00 AM.
Reply With Quote
  #3  
Old 07-25-2009, 01:19 PM
K.I.M.POSSIBLE K.I.M.POSSIBLE is offline
Officially Welcomed to the 'Fest
Location: ATX
 
Join Date: Jun 2008
Posts: 105
Mein Auto: 05 X5, 04 S430, 02 325i
Quote:
Originally Posted by Smithers34 View Post
I have a 2004 325i.

So I have P0411 code Secondary Air Incorrect Flow detected. From searching through here most users on here find cracked vacuum hoses. However, as I look at Realoem and my engine, I cannot see where any vacuum lines attach to the valve.

Part number 7 has no holes or cracks.

What allows part 17 valve to open and close?

Thanks to everyone for your assistance.
FYI the secondary air pump only comes on when thecar is dead cold, and only runs no more than a few minutes.
After that its just sitting there doing nothing. certainly not throwing any codes.
Reply With Quote
  #4  
Old 07-25-2009, 01:36 PM
mr_bean mr_bean is offline
Officially Welcomed to the 'Fest
Location: NJ
 
Join Date: Mar 2009
Posts: 681
Mein Auto: 2000 328i
"certainly not throwing any codes"

Trust me, a malfunctioning sec. air injection system WILL throw codes.
Reply With Quote
  #5  
Old 07-25-2009, 06:34 PM
mikevaquez's Avatar
mikevaquez mikevaquez is offline
Officially Welcomed to the 'Fest
Location: The Windy City
 
Join Date: Jun 2006
Posts: 523
Send a message via Yahoo to mikevaquez
Mein Auto: BMW 325ci
Quote:
Originally Posted by mr_bean View Post
There should be a small diameter vacuum line running from #17 to a solenoid valve and then to the manifold.
#1 in this pic should be the same part as #17 in your pic.

Or, in some cases, #17 is just a check valve. The air pump pressure is what forces it open.

First things first, make sure the air pump is functioning.

Actually I think the picture he has is right. When I pulled it up on RealOEM, it didn't give me a part number when I clicked on the picutre you have. I tried looking for the hoses and couldn't find them. I have the same promblem that I have been working on. I changed the Air Pump thinking that was the problem, and it sollved it for a while. I changed the sensor and the problem was still there. I know a BMW Tech and he did a diagnostic check for me at the dealer, and said that the pump and sensor are working good. He advised me the change the valve (#17) and that should correct the air flow. I ordered the part from Tisher BMW and I will be recieving it on Tuesday. I will change the valve and erase the code, which is the same one you have, and I will report back in about 2 weeks time just to make sure the SES light doesn't return.
__________________
Dynavin
Angel Eyes
5000k Fog Lights
Hard Wired Escort 9500ix
2 twelve inch Orions
Diamond Audio Componets(Front)
JL Audio Components(Rear)
Reply With Quote
  #6  
Old 07-27-2009, 06:31 AM
Smithers34 Smithers34 is offline
Registered User
Location: USA
 
Join Date: Jun 2009
Posts: 7
Mein Auto: 325i
I am pretty sure my problem is the valve also. I pulled the hose from the air pump and there is definately air flow going to the valve. I will have to get one ordered as well.
Reply With Quote
  #7  
Old 08-24-2009, 09:01 AM
caruscant caruscant is offline
Registered User
Location: UK
 
Join Date: Jan 2007
Posts: 7
Mein Auto: BMW 330 i 2000
effect on mpg?

hi guys, sorry to hijack, just a quickie. My secondary air pump is making a hell of a noise and also vibrates like mad to the touch. It seems to me that the fan inside (or whatever you call it) is either not much longer for this world or the bearing are shot.....I am going to replace this soon but i have noticed lately the MPG seems a little off, and has happened around the time this started....do you think this could be contributing towards mpg drop?
Again, sorry if not the right place to be posting!

Cheers B
Reply With Quote
  #8  
Old 10-12-2009, 01:17 PM
mikevaquez's Avatar
mikevaquez mikevaquez is offline
Officially Welcomed to the 'Fest
Location: The Windy City
 
Join Date: Jun 2006
Posts: 523
Send a message via Yahoo to mikevaquez
Mein Auto: BMW 325ci
Sorry for taking so long to report back. I replaced the valve and the codes went away. Haven't had a problem. If you replace it, I would order a set of screws as well. Comes in handy just in case.
__________________
Dynavin
Angel Eyes
5000k Fog Lights
Hard Wired Escort 9500ix
2 twelve inch Orions
Diamond Audio Componets(Front)
JL Audio Components(Rear)
Reply With Quote
  #9  
Old 10-12-2009, 07:41 PM
jeffreyslc's Avatar
jeffreyslc jeffreyslc is offline
Officially Welcomed to the 'Fest
Location: Sandy, Utah
 
Join Date: May 2002
Posts: 79
Mein Auto: 2002 330xi
Is Changing the Valve Difficult

Was changing out part #17 very difficult? I replaced my air pump last year because it was making alot of noise. The new pump is now making noise and I understand if the valve is not closing completely the exhaust can ruin the pump quickly. I wanted some idea of what I am getting into to replace the valve.

TIA, Jeff
__________________
Jeff
2002 330xi Auto
Steel Blue
Mods: Shark, Conforti CAI, Dinan Tranny s/w, Halogen interior lights, OEM Alarm install, OEM 6-disc changer install, Homelink Install, Window tint, golf tee mod.
Reply With Quote
  #10  
Old 10-12-2009, 08:08 PM
mikevaquez's Avatar
mikevaquez mikevaquez is offline
Officially Welcomed to the 'Fest
Location: The Windy City
 
Join Date: Jun 2006
Posts: 523
Send a message via Yahoo to mikevaquez
Mein Auto: BMW 325ci
If you have the same engine, it's only 2 bolts. I took the secondary air pump off so that I would have more room. Make sure you check to see if you could get the hose off from the valve. The first time I tried replacing it the hose did not come off. So I had to order and wait for the hose to come in as well.
__________________
Dynavin
Angel Eyes
5000k Fog Lights
Hard Wired Escort 9500ix
2 twelve inch Orions
Diamond Audio Componets(Front)
JL Audio Components(Rear)
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 07:52 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms