Severe Misfire issue - Bimmerfest - BMW Forums



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 04-01-2020, 01:50 PM
Auggie1959 Auggie1959 is offline
Registered User
 
Join Date: Mar 2020
Posts: 3
Mein Auto:
Please help..... I am brand new to this forum (well posting anyhow) I have been using it as a research tool for months.

I have a 2006 325xi E90 N52 Sedan

I've had the vehicle a month now and can not solve a couple issues for the life of me !

I have read the manual front to back and searched everywhere and cant resolve ....

I am having misfire codes on 4/5/6

But I can not resolve this .....

I have just recently changed- replaced the plugs/coils/alternator/cleaned the vanos/ new MAF & intake:.::::::::.&
Changed the oil

I got NGK plugs / OEM coils
The spark plugs were pre-gapped and everything looked good before I installed it..
I am sure they were pressed down all the way, and everything was tight fitting.

When it idles, It's horrible and I feel like it's gonna die. It shakes hard, sputters, and feels terrible. I went driving around to see how it would do, and it wasn't very well.....

I can see two places on the coil wiring harness where the wires have a slit and become exposed. One just beneath the coil pack connector head on coil # 3. & one on coil # 6.
I covered both slices with liquid electrical tape & the misfires on 1-2 & 3 disappeared. But 4/5/6 remain.

I did remove the plugs and check them today and they smelled a bit like gasoline ....

I'm going to replace injectors and see what happens .....

Please help,
Do I have to replace wiring harness ?
Attached Thumbnails
Click image for larger version

Name:	B1632E6B-7191-43BC-A554-1A3566281091_1585774122246.jpg
Views:	13
Size:	67.7 KB
ID:	887233  

Last edited by Auggie1959; 04-01-2020 at 02:09 PM.
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 04-01-2020, 05:46 PM
dharmabmw dharmabmw is offline
Officially Welcomed to the 'Fest
Location: Ottawa, Canada
 
Join Date: Jul 2014
Posts: 2,210
Mein Auto: 2006 530Xi
Have you tried clearing the codes? Sometimes the misfires set a permanent code which blocks the ECM from triggering the ignition coil until you reset it.
__________________
2006 E61 MT
2010 E91 MT
Reply With Quote
  #3  
Old 04-02-2020, 05:25 AM
marvinstockman marvinstockman is offline
Officially Welcomed to the 'Fest
Location: Gaithersburg, MD
 
Join Date: Feb 2009
Posts: 244
Mein Auto: 1997 M#
Do a compression and leakdown test, and you may have mechanical issues.
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old 04-03-2020, 12:57 PM
Auggie1959 Auggie1959 is offline
Registered User
 
Join Date: Mar 2020
Posts: 3
Mein Auto:
Ok, here are some updates......

I pulled the fuel rail and cleaned all of the injectors really well....

I re-pulled out all of the spark plugs and double checked the gap

I re-seated the coils and made sure they were torqued perfect

I went and drove the car and it drives sooo much better.... The response is good, it sounds good, there is far less vibration, & it seems to have much more power........

BUT I am now throwing codes for misfires on
1-2 & 3 .......??

As well as a signal wire swapped code on the O2 sensor ???

I am just about to do a spark tester to check that right now. As well as compression and Leakdown test, per suggestion.....

I ordered Ista & Inpa I just need the cable to connect.

Would the O2 sensor or ESS sensor be a possible culprit ?
Attached Thumbnails
Click image for larger version

Name:	0B8C0E3F-F03F-4E91-8CA5-D63B3B03032A_1585945105942.jpg
Views:	7
Size:	68.0 KB
ID:	887437  

Last edited by Auggie1959; 04-03-2020 at 01:18 PM.
Reply With Quote
  #5  
Old 04-03-2020, 01:06 PM
Auggie1959 Auggie1959 is offline
Registered User
 
Join Date: Mar 2020
Posts: 3
Mein Auto:
Yes, I did clear the codes via the FIXD app, and OBD scanner that it comes with....

I have done this several times, and even while driving.... At first it would drive better as I was clearing the codes.... But by the time I was back, it seemed to just be running well altogether....
Reply With Quote
  #6  
Old 04-05-2020, 04:45 PM
Celticfc Celticfc is offline
Registered User
 
Join Date: Aug 2019
Posts: 15
Mein Auto:
Quote:
Originally Posted by Auggie1959 View Post
Ok, here are some updates......

I pulled the fuel rail and cleaned all of the injectors really well....

I re-pulled out all of the spark plugs and double checked the gap

I re-seated the coils and made sure they were torqued perfect

I went and drove the car and it drives sooo much better.... The response is good, it sounds good, there is far less vibration, & it seems to have much more power........

BUT I am now throwing codes for misfires on
1-2 & 3 .......??

As well as a signal wire swapped code on the O2 sensor ???

I am just about to do a spark tester to check that right now. As well as compression and Leakdown test, per suggestion.....

I ordered Ista & Inpa I just need the cable to connect.

Would the O2 sensor or ESS sensor be a possible culprit ?
Go back to your original post where you mentioned potential wiring issues with 1,2 & 3. Make sure that you do not have compromised connections and continuity before going down a rabbit hole.
Reply With Quote
  #7  
Old 04-10-2020, 05:14 PM
3284me's Avatar
3284me 3284me is offline
Officially Welcomed to the 'Fest
Location: NJ
 
Join Date: Jan 2011
Posts: 1,755
Mein Auto: 2011 328 xdrive
Did you change all the coils?
__________________
2020 X5 xdrive 40i Tanzanite Blue / Coffee Vernaska
2011 328xi. Space Grey
Reply With Quote
  #8  
Old 04-10-2020, 05:21 PM
Jorbabcnman Jorbabcnman is offline
inquieto
Location: españa
 
Join Date: Oct 2019
Posts: 19
Mein Auto: bmw f20
El sensor de oxigeno a menudo se ensucia y solo es posible su sustitución.
Reply With Quote
Reply

See More Related BMW Stories


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 02:15 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
© 2001- VerticalScope Inc. All rights reserved.