E90Post
 


GT Haus
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > One ignition coil per month?



Reply
 
Thread Tools Search this Thread
      11-03-2012, 06:50 PM   #1
Saintor
Colonel
Saintor's Avatar
31
Rep
2,392
Posts

 
Drives: E90
Join Date: Sep 2005
Location: MTL, Canada

iTrader: (1)

One ignition coil per month?

2 in 2 months; #2 last month #4 this month. 2007 N52N 70000miles. Should I expect to change the remaining 4?
__________________
2007 E90 AW 323i Step | Lowered 1.25"/1" | BMW Performance Exhaust | Debadged | Scangauge II | Style 162 18" & 161 17" wheels & rear 15mm spacers

Last edited by Saintor; 11-03-2012 at 09:21 PM.
Appreciate 0
      11-04-2012, 09:03 AM   #2
P2
Private First Class
4
Rep
188
Posts

 
Drives: 2006 325i Silver/Black
Join Date: Mar 2006
Location: NW Chicago Land

iTrader: (0)

Quote:
Originally Posted by Saintor View Post
2 in 2 months; #2 last month #4 this month. 2007 N52N 70000miles. Should I expect to change the remaining 4?
I lost one in March or so and then changed the rest myself following the spark plug DIY. It's was just too much of a hassle when one goes out that I figured it was worth it. I bought the parts here: http://www.autohausaz.com/
Appreciate 0
      11-04-2012, 11:25 AM   #3
F32Fleet
BMWCCA since '03
F32Fleet's Avatar
United_States
69
Rep
5,339
Posts

 
Drives: 2015 435i
Join Date: May 2005
Location: Atlanta (Vinings)

iTrader: (0)

I would. In the past it was considered good preventive maintenance to do all of them once 1-2 went bad.
Appreciate 0
      11-05-2012, 05:19 PM   #4
Saintor
Colonel
Saintor's Avatar
31
Rep
2,392
Posts

 
Drives: E90
Join Date: Sep 2005
Location: MTL, Canada

iTrader: (1)

I just wonder if there could be something "above" that could mess the coils. The coincidence is incredible.
__________________
2007 E90 AW 323i Step | Lowered 1.25"/1" | BMW Performance Exhaust | Debadged | Scangauge II | Style 162 18" & 161 17" wheels & rear 15mm spacers
Appreciate 0
      11-06-2012, 09:08 PM   #5
Ricke90
New Member
0
Rep
16
Posts

 
Drives: 330i
Join Date: Oct 2012
Location: Lotsa places

iTrader: (0)

The coincidence really isn't all that incredible. I you think about it for a minute, you'll realize that they all have fired nearly the exact same amount of times. If they are all made nearly the same they will all fail at the same time.

I'm surprised someone didn't tell you to replace them all at once. That being said, replace the rest if you don't want to deal with more misfires.
Appreciate 0
      11-06-2012, 11:29 PM   #6
Eric335
Colonel
Eric335's Avatar
United_States
36
Rep
2,493
Posts

 
Drives: 2007 E92 SG 335i 6MT
Join Date: Apr 2011
Location: SW Florida

iTrader: (0)

Garage List
2007 BMW 335i  [3.83]
Quote:
Originally Posted by Ricke90 View Post
The coincidence really isn't all that incredible. I you think about it for a minute, you'll realize that they all have fired nearly the exact same amount of times. If they are all made nearly the same they will all fail at the same time.

I'm surprised someone didn't tell you to replace them all at once. That being said, replace the rest if you don't want to deal with more misfires.


Replace the other 4 at the same time, so that if you keep the car for another 30k miles, you will know that they all are about the same age. Thats what i would do once they all start misfiring. I will be doing this eventually.
__________________
Appreciate 0
      11-06-2012, 11:38 PM   #7
Doc K
Fleet Admiral ★★★★★
Doc K's Avatar
United_States
9
Rep
498
Posts

 
Drives: E90 325i SG
Join Date: Feb 2011
Location: Woodinville

iTrader: (2)

Send a message via Skype™ to Doc K
Aren't these like $50 each? I took my to the dealership because I didn't have time to order parts, and I think that's how much they charged me.
Appreciate 0
      11-07-2012, 06:10 PM   #8
Saintor
Colonel
Saintor's Avatar
31
Rep
2,392
Posts

 
Drives: E90
Join Date: Sep 2005
Location: MTL, Canada

iTrader: (1)

Quote:
Originally Posted by Eric335 View Post


Replace the other 4 at the same time, so that if you keep the car for another 30k miles, you will know that they all are about the same age. Thats what i would do once they all start misfiring. I will be doing this eventually.
This should happen way beyond only 70000 miles, IMO...
__________________
2007 E90 AW 323i Step | Lowered 1.25"/1" | BMW Performance Exhaust | Debadged | Scangauge II | Style 162 18" & 161 17" wheels & rear 15mm spacers
Appreciate 0
      11-17-2012, 05:47 PM   #9
Saintor
Colonel
Saintor's Avatar
31
Rep
2,392
Posts

 
Drives: E90
Join Date: Sep 2005
Location: MTL, Canada

iTrader: (1)

For the record, the #4 misfire was not the ignition coil. It was the spark plug! So much for the 100000 miles interval...
__________________
2007 E90 AW 323i Step | Lowered 1.25"/1" | BMW Performance Exhaust | Debadged | Scangauge II | Style 162 18" & 161 17" wheels & rear 15mm spacers
Appreciate 0
      11-18-2012, 06:50 PM   #10
Ricke90
New Member
0
Rep
16
Posts

 
Drives: 330i
Join Date: Oct 2012
Location: Lotsa places

iTrader: (0)

Are you not replacing the plugs at the same time as the coils?
Appreciate 0
      11-18-2012, 07:04 PM   #11
Saintor
Colonel
Saintor's Avatar
31
Rep
2,392
Posts

 
Drives: E90
Join Date: Sep 2005
Location: MTL, Canada

iTrader: (1)

Quote:
Originally Posted by Ricke90 View Post
Are you not replacing the plugs at the same time as the coils?
I will change the 5 others in the next weeks as I have them. I don't see the point to change the coils - it should not be on a preventive schedule unless the design is weak. Bosch doesn't impress me. I have a spare in case.
__________________
2007 E90 AW 323i Step | Lowered 1.25"/1" | BMW Performance Exhaust | Debadged | Scangauge II | Style 162 18" & 161 17" wheels & rear 15mm spacers
Appreciate 0
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 11:48 PM.




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