E90Post
 


ECS BMW
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Half Engine Light after cleaning intake valves and OCC install



Reply
 
Thread Tools Search this Thread
      07-24-2012, 09:11 PM   #1
jwalker87
Second Lieutenant
 
Drives: 2008 e90 335i, 2011 e90 335xi
Join Date: Jul 2010
Location: Charleston, SC

Posts: 257
iTrader: (0)

Half Engine Light after cleaning intake valves and OCC install

Title pretty much says it all... I cleaned my intake valves using THIS procedure, and also installed a Burger Tuning OCC while I was at it. Both went fairly uneventfully, until I got everything buttoned back up and started the car. This is on a 2008 e90 335i btw.

Everything sounds/looks fine, but I get a Half Engine Light, and SES light. I have not driven the car yet, but let it idle for ~10 minutes to warm up, thinking it might be cleaner gunk still in the intake tract. But it still comes back. The codes are Turbo A Signal High (or something like that) and Cylinder 4 misfire, but I'm pretty sure the misfire is from before I did the work (one of the reasons I'm cleaning the valves).

At my next opportunity (Thursday, since I will be at work from tomorrow morning until Thursday afternoon), I will take the cowl and engine cover back off and check for loose connections/hoses, but has anyone had similar problems after doing either of these maintenance items? Just looking for some good leads, so I might focus my efforts when looking for the problem.

Thanks guys!
jwalker87 is offline   United_States
0
Reply With Quote
      07-24-2012, 09:41 PM   #2
gtaccord
Major
 
Drives: 2009 BMW 335xi
Join Date: Feb 2012
Location: Maryland

Posts: 1,025
iTrader: (6)

Garage List
Did you plug back in all the sensors and make sure all the connections were tight? I also had a misfire after I cleaned my valves but eventually it went away.

Sounds to me like you have a boost leak or maybe a problem with one of the map sensors.
gtaccord is offline   United_States
0
Reply With Quote
      07-25-2012, 12:37 PM   #3
M3 Eater
Major
 
M3 Eater's Avatar
 
Drives: 335i Sedan
Join Date: May 2010
Location: Unknown

Posts: 1,057
iTrader: (3)

Garage List
2007 335i  [0.00]
2 sensors, tmap and boost. One on top of the manifold, one in the bottom of the charge pipe. The bottom charge pipe sensor gets forgotten every time I remove the manifold.
__________________
JB4 beta 15 ohms FSB,AEM inline filter/ CM 10, ETS fmic, ER custom made charge pipe,TSW Donnington 18's,Simitumo HTRZ3, Injen DCI, AR DPs, Forge DVs, AA SLD, Koni FSD, ZSP springs.
M3 Eater is offline   United_States
0
Reply With Quote
      07-25-2012, 12:46 PM   #4
Jeff@TopGearSolutions
BimmerPost Supporting Vendor

 
Jeff@TopGearSolutions's Avatar
 
Drives: C6 Z06, GSXR-750, 09 335i
Join Date: Dec 2008
Location: TopGearSolutions.com

Posts: 17,133
iTrader: (32)

Send a message via AIM to Jeff@TopGearSolutions
Quote:
Originally Posted by M3 Eater View Post
2 sensors, tmap and boost. One on top of the manifold, one in the bottom of the charge pipe. The bottom charge pipe sensor gets forgotten every time I remove the manifold.
+1 Also make sure they didnt get any gunk on them.
Jeff@TopGearSolutions is offline   United_States
0
Reply With Quote
      07-26-2012, 11:45 AM   #5
jwalker87
Second Lieutenant
 
Drives: 2008 e90 335i, 2011 e90 335xi
Join Date: Jul 2010
Location: Charleston, SC

Posts: 257
iTrader: (0)

Thanks guys. I will check this afternoon, and be sure to look at the boost sensor (or whichever one is on the bottom of the charge pipe).
jwalker87 is offline   United_States
0
Reply With Quote
      07-26-2012, 12:17 PM   #6
jwalker87
Second Lieutenant
 
Drives: 2008 e90 335i, 2011 e90 335xi
Join Date: Jul 2010
Location: Charleston, SC

Posts: 257
iTrader: (0)

M3 Eater, looks like we think the same! Didn't even have to take anything apart, could see the dangling connector as soon as I peered under the intake. Runs fine now, thanks.
jwalker87 is offline   United_States
0
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Forum Jump


All times are GMT -5. The time now is 07:49 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST