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 > 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

Reply
 
Thread Tools Display Modes
  #1  
Old 11-12-2012, 10:55 AM
T.O.335 T.O.335 is offline
Registered User
Location: Toronto
 
Join Date: Nov 2012
Posts: 6
Mein Auto: 335xi M
cleaning MAP and other sensors '09 335xi

Hey guys,

I'm thinking that its worth cleaning the MAP sensor and any other sensors that are exposed to dirt and grime and can become dirty with time. I have searched for DIYs and have come up empty, I was wondering if someone could provide a DIY with pics or at least pictures of where the sensors are located, along with a list of the sensors that need/can be cleaned. Thanks!

Last edited by T.O.335; 11-13-2012 at 08:59 AM. Reason: simplified question
Reply With Quote
Ads by Google
  #2  
Old 11-14-2012, 06:39 AM
T.O.335 T.O.335 is offline
Registered User
Location: Toronto
 
Join Date: Nov 2012
Posts: 6
Mein Auto: 335xi M
Any ideas?
Reply With Quote
  #3  
Old 11-14-2012, 07:52 AM
ctuna ctuna is online now
Officially Welcomed to the 'Fest
Location: usa
 
Join Date: Jan 2010
Posts: 2,208
Mein Auto: 325xi wagon
FYI for DIY and maintenance +

http://www.e90post.com/forums/forumdisplay.php?f=16

There are a lot of procedures in the above links.

The MAF Sensor is easy but very fragile.
The other sensors (If it ain't broke don't fix it.)
If you read the Mike Miller schedule he doesn't really say much about cleaning sensors.
And he is the maintenance authority.
The Vanos solenoids are sometimes cleaned to clear up vanos problems.

google Mike Miller BMW

Last edited by ctuna; 11-14-2012 at 07:58 AM.
Reply With Quote
  #4  
Old 11-14-2012, 09:32 AM
john@eac john@eac is offline
Past Sponsor
Location: Ohio
 
Join Date: Jul 2012
Posts: 207
Mein Auto: Many
The MAF sensor is the only sensor that is ever really cleaned and you need to be real carful doing that.
Reply With Quote
  #5  
Old 11-14-2012, 09:36 AM
T.O.335 T.O.335 is offline
Registered User
Location: Toronto
 
Join Date: Nov 2012
Posts: 6
Mein Auto: 335xi M
From what I have read the n54 engine doesnt have an MAF. I am getting rough cold starts, and would like to clean all my sensors to see if it helps. I have not found any DIY guide on cleaning intake sensors for the n54. Can anyone point me in the right direction?

Last edited by T.O.335; 11-14-2012 at 09:42 AM.
Reply With Quote
  #6  
Old 11-14-2012, 09:58 AM
DSXMachina's Avatar
DSXMachina DSXMachina is offline
Non compos Mentos
Location: New Hampshire
 
Join Date: Dec 2007
Posts: 10,375
Mein Auto: 335i E92 TiAg 6MT ED
Quote:
Originally Posted by ctuna View Post
http://www.e90post.com/forums/forumdisplay.php?f=16

There are a lot of procedures in the above links.

The MAF Sensor is easy but very fragile.
The other sensors (If it ain't broke don't fix it.)
If you read the Mike Miller schedule he doesn't really say much about cleaning sensors.
And he is the maintenance authority.
The Vanos solenoids are sometimes cleaned to clear up vanos problems.

google Mike Miller BMW
Quote:
Originally Posted by T.O.335 View Post
From what I have read the n54 engine doesnt have an MAF. I am getting rough cold starts, and would like to clean all my sensors to see if it helps. I have not found any DIY guide on cleaning intake sensors for the n54. Can anyone point me in the right direction?
Never clean a MAP sensor. Avoid cleaning any other sensor, including your MAF sensor, unless there is an articulable reason for doing so.
Reply With Quote
  #7  
Old 11-14-2012, 11:22 AM
T.O.335 T.O.335 is offline
Registered User
Location: Toronto
 
Join Date: Nov 2012
Posts: 6
Mein Auto: 335xi M
Quote:
Originally Posted by DSXMachina View Post
Never clean a MAP sensor. Avoid cleaning any other sensor, including your MAF sensor, unless there is an articulable reason for doing so.
I have actually been having rough cold start issues, with the engine performing smoothly once it is up to temperature. Experience that I have had with other cars previously is that dirty sensors can be the cause of these types of issues.
__________________
'09 E90 335xi - M Package - Lemans Blue - 85,000k

Last edited by T.O.335; 11-14-2012 at 11:31 AM.
Reply With Quote
  #8  
Old 11-14-2012, 11:37 AM
Orient330iNYC's Avatar
Orient330iNYC Orient330iNYC is offline
Flying monkey herder
Location: Wall St
 
Join Date: Jul 2002
Posts: 7,006
Mein Auto: Daihatsu Terrios
Quote:
Originally Posted by DSXMachina View Post
Never clean a MAP sensor. Avoid cleaning any other sensor, including your MAF sensor, unless there is an articulable reason for doing so.
i see this ending well.....
__________________
Past: 2001 330i ZSP/ZPP/Step
Past: 2004 S60R 6MT Sport
Past: 2007 335i 6MT ZSP/ZCW/322/655
Past: 2010 335xi ZMP/ZCW/ZPP/PPK/PE
Present: 2013 335i 6MT ZMM/ZDH/ZTP/3AG/494/508
Current Homeland Threat Level:
Reply With Quote
  #9  
Old 11-14-2012, 11:56 AM
DSXMachina's Avatar
DSXMachina DSXMachina is offline
Non compos Mentos
Location: New Hampshire
 
Join Date: Dec 2007
Posts: 10,375
Mein Auto: 335i E92 TiAg 6MT ED
How many miles on your car?
Reply With Quote
  #10  
Old 11-14-2012, 11:59 AM
T.O.335 T.O.335 is offline
Registered User
Location: Toronto
 
Join Date: Nov 2012
Posts: 6
Mein Auto: 335xi M
Just over 85,000 km or 53,000 miles.
__________________
'09 E90 335xi - M Package - Lemans Blue - 85,000k
Reply With Quote
  #11  
Old 11-14-2012, 12:35 PM
DSXMachina's Avatar
DSXMachina DSXMachina is offline
Non compos Mentos
Location: New Hampshire
 
Join Date: Dec 2007
Posts: 10,375
Mein Auto: 335i E92 TiAg 6MT ED
The number one cause of rough cold idle* is a dirty throttle body. It's not too hard a job to do on your car. Find a DIY, get a good brush and a can of t b cleaner (Gunk makes a good cleaner). Be careful not to damage the electronic throttle by improperly moving it, and you could solve your problem.
A dirty throttle body virtually never sets a code.
*You did change your plugs already, right? And used BMW plugs?

PS When you start the car after cleaning the tb it will run worse than ever for half a minute. Give it a chance.

Last edited by DSXMachina; 11-14-2012 at 12:38 PM.
Reply With Quote
  #12  
Old 11-14-2012, 12:45 PM
CALWATERBOY's Avatar
CALWATERBOY CALWATERBOY is offline
Officially Welcomed to the 'Fest
Location: San Francisco
 
Join Date: Aug 2009
Posts: 10,009
Mein Auto: 2009 E93 N54
Quote:
Originally Posted by T.O.335 View Post
I have actually been having rough cold start issues, with the engine performing smoothly once it is up to temperature. Experience that I have had with other cars previously is that dirty sensors can be the cause of these types of issues.

Long cranks?
Reply With Quote
  #13  
Old 11-14-2012, 08:34 PM
T.O.335 T.O.335 is offline
Registered User
Location: Toronto
 
Join Date: Nov 2012
Posts: 6
Mein Auto: 335xi M
Quote:
Originally Posted by CALWATERBOY View Post
Long cranks?
No long cranks at all, starts right up. I still would like to try to clean sensors if at all possible. I am getting misfire CEL codes but the engine runs wonderfully when warm so I have a feeling its temperature/sensor related.
__________________
'09 E90 335xi - M Package - Lemans Blue - 85,000k

Last edited by T.O.335; 11-14-2012 at 08:41 PM.
Reply With Quote
  #14  
Old 11-15-2012, 01:25 AM
CALWATERBOY's Avatar
CALWATERBOY CALWATERBOY is offline
Officially Welcomed to the 'Fest
Location: San Francisco
 
Join Date: Aug 2009
Posts: 10,009
Mein Auto: 2009 E93 N54
Quote:
Originally Posted by T.O.335 View Post
No long cranks at all, starts right up. I still would like to try to clean sensors if at all possible. I am getting misfire CEL codes but the engine runs wonderfully when warm so I have a feeling its temperature/sensor related.

Specific & consistent? Have to wonder if one or two cyl's only giving trouble.
Reply With Quote
  #15  
Old 11-15-2012, 04:55 AM
DSXMachina's Avatar
DSXMachina DSXMachina is offline
Non compos Mentos
Location: New Hampshire
 
Join Date: Dec 2007
Posts: 10,375
Mein Auto: 335i E92 TiAg 6MT ED
Did post 11 register at all with you?
Reply With Quote
  #16  
Old 11-15-2012, 05:20 AM
CALWATERBOY's Avatar
CALWATERBOY CALWATERBOY is offline
Officially Welcomed to the 'Fest
Location: San Francisco
 
Join Date: Aug 2009
Posts: 10,009
Mein Auto: 2009 E93 N54
Quote:
Originally Posted by DSXMachina View Post
Did post 11 register at all with you?

Yes, but....

OP hasn't posted codes or lack of. Hasn't indicated whether problem is with certain cyl's or not, and hasn't said whether he's changed plugs or anything else.

So....

Name:  Think 02.gif
Views: 806
Size:  12.3 KB

Last edited by CALWATERBOY; 11-15-2012 at 05:23 AM.
Reply With Quote
  #17  
Old 11-15-2012, 06:03 AM
David1's Avatar
David1 David1 is offline
Officially Welcomed to the 'Fest
Location: Great Lakes
 
Join Date: Jan 2007
Posts: 1,016
Mein Auto: 07 X3 and 335i
Carboned up intake valves also.
__________________
2009 335i Coupe - LBM - Black Dakota/Glacier aluminum - 6spd | Nav | M-Sport | Premium | Logic7 | Heated Seats | CA |BMW Performance Suspension/M3 control arms|
2009 X5 3.0 - AW- Black Dakota/Bamboo | Premium |Tech | Cold Weather | Ipod | Rear Climate |
07 X3 - Sold
07 335 coupe - sold
Reply With Quote
  #18  
Old 11-15-2012, 06:17 AM
Orient330iNYC's Avatar
Orient330iNYC Orient330iNYC is offline
Flying monkey herder
Location: Wall St
 
Join Date: Jul 2002
Posts: 7,006
Mein Auto: Daihatsu Terrios
Quote:
Originally Posted by DSXMachina View Post
Did post 11 register at all with you?
i stand by post 8
__________________
Past: 2001 330i ZSP/ZPP/Step
Past: 2004 S60R 6MT Sport
Past: 2007 335i 6MT ZSP/ZCW/322/655
Past: 2010 335xi ZMP/ZCW/ZPP/PPK/PE
Present: 2013 335i 6MT ZMM/ZDH/ZTP/3AG/494/508
Current Homeland Threat Level:
Reply With Quote
  #19  
Old 11-15-2012, 07:39 AM
DSXMachina's Avatar
DSXMachina DSXMachina is offline
Non compos Mentos
Location: New Hampshire
 
Join Date: Dec 2007
Posts: 10,375
Mein Auto: 335i E92 TiAg 6MT ED
Quote:
Originally Posted by CALWATERBOY View Post
Yes, but....

OP hasn't posted codes or lack of. Hasn't indicated whether problem is with certain cyl's or not, and hasn't said whether he's changed plugs or anything else.

So....

Attachment 349632
Sorry Cal, that was directed at the OP.


Quote:
Originally Posted by Orient330iNYC View Post
i stand by post 8
I think you'll be proven correct.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)
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 08:34 PM.


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