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 > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 09-22-2012, 10:51 AM
Petlover Petlover is offline
Petlover
Location: Wisconsin
 
Join Date: Jul 2009
Posts: 144
Mein Auto: BMW 530i
Spark Plugs & Ignition Coils Replacement

Whrn I replace all the Spark Plugs, do I need to replace all the Ignition Coils the same time so as to get the best performance.
Reply With Quote
Ads by Google
  #2  
Old 09-22-2012, 02:33 PM
poolman poolman is offline
Officially Welcomed to the 'Fest
Location: martinsville va
 
Join Date: Nov 2005
Posts: 3,865
Mein Auto: 525i station wagon
I have over 200k miles on my coils and still getting 30 miles or better out on the road--smooth as silk--I would suggest the NKG Iridium plugs--
Reply With Quote
  #3  
Old 09-22-2012, 02:43 PM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 21,079
Mein Auto: 02 BMW 525i M54 auto 130K
Nobody does that as a routine measure.

Replace a single coil only when bad.

The consensus is they either work or they don't.

See also:
- One user's pictorial DIY for replacing the BMW M54 engine spark plugs (1)
__________________
Each repair should invariably add to our knowledge base by the process of inexorable incrementalism.
Your job, in return, is to read the suggested threads, where the best people will always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
Reply With Quote
  #4  
Old 09-23-2012, 01:54 AM
Petlover Petlover is offline
Petlover
Location: Wisconsin
 
Join Date: Jul 2009
Posts: 144
Mein Auto: BMW 530i
Is Bosch the OEM or NGK the OEM for the Spark Plug ?
I went into 2 different on line webs, one is ECS Tuning, they sell OEM Replacement Spark Plug - it says Genuine BMW Spark Plugs - Bosch for $105.29,
then the other named Auto Barn, they also say Genuine BMW - NGK - Laser Platium Spark Plugs for $8.99 / piece, it totally cost me about $54 which is half price less than the above.
So which one is exactly the OEM, does anyone have the clue?
Reply With Quote
  #5  
Old 09-23-2012, 09:03 AM
johnstern's Avatar
johnstern johnstern is offline
Officially Welcomed to the 'Fest
Location: Cape Neddick, Maine
 
Join Date: Mar 2007
Posts: 917
Mein Auto: 2000 BMW 528iT/5, S/C
I believe BMW used both NGK and Bosch for OE plugs.

+1 on Poolman's recommendation for NGK Iridium plugs. I've used them for years with great results and zero problems.

BTW-OE plugs are platinum.

Last edited by johnstern; 09-23-2012 at 09:40 AM.
Reply With Quote
  #6  
Old 09-23-2012, 11:25 AM
Petlover Petlover is offline
Petlover
Location: Wisconsin
 
Join Date: Jul 2009
Posts: 144
Mein Auto: BMW 530i
Is NGK Laser Platinum plug higher grade than Iridium Plug?

Is Bosch or NGK last 100k before it is replaced again?
Reply With Quote
  #7  
Old 09-23-2012, 12:18 PM
540 M-Sport's Avatar
540 M-Sport 540 M-Sport is offline
Officially Welcomed to the 'Fest
Location: Seattle, WA
 
Join Date: Apr 2004
Posts: 4,930
Mein Auto: 01' 540 M-Sport cdn, F355
Quote:
Originally Posted by Petlover View Post
Is NGK Laser Platinum plug higher grade than Iridium Plug?

Is Bosch or NGK last 100k before it is replaced again?
The oem platinum plugs with four prongs are claimed to last 100k. I have found noticeable improvement in fuel economy if replaced at the 60k point. (2 mpg)

You can use whichever you like, and they all seen to work fine, but you will definitely want to replace at 60k miles.
__________________
Factory M-Sport package with factory installed M-tech bumpers, factory Bluetooth, factory M-Audio 10" dual voice coil subs, Homelink, M5 rear stabilizer bar, Bilstein B14 PSS coil overs, Stop Tech ss brake lines, Akebono Euro Ceramic brake pads, oem Brembo and Zimmerman rotors, Dinan Stage 1 software, Strong Strut front upper stress bar.
Reply With Quote
  #8  
Old 09-23-2012, 05:42 PM
JimLev JimLev is offline
Officially Welcomed to the 'Fest
Location: MA
 
Join Date: Dec 2003
Posts: 3,641
Mein Auto: 540/6, S60 Volvo, Tribeca
Iridium are suppose to last longer than platinum, both are great, get which ever one you want.
NGK's are my favorite, I'm using the iridium plugs for the last 3 years. No problems.
__________________

2000 540/6 Slightly tweeked...everywhere

Last edited by JimLev; 09-26-2012 at 05:36 PM.
Reply With Quote
  #9  
Old 09-26-2012, 10:48 AM
john@eac john@eac is offline
Past Sponsor
Location: Ohio
 
Join Date: Jul 2012
Posts: 207
Mein Auto: Many
I always try to use what was originally installed in the vehicle. We have the Bosch listed as the OEM replacement and the NGK as a second. Spark Plug "High Power" - Bosch FGR-7-DQP (4417), NGK BKR6EQUP (3199)

http://www.eaceuroparts.com/parts/pa...ge/31/2004/375

Coil paks as needed. I agree with the 60k as the longest that I would run a sparkplug.
Reply With Quote
  #10  
Old 09-26-2012, 12:54 PM
eparayno's Avatar
eparayno eparayno is offline
Officially Welcomed to the 'Fest
Location: Vista, CA
 
Join Date: Jan 2012
Posts: 707
Mein Auto: 2001 530i
When swapping plugs change the coil boots. With the coils they're either good or bad. If yours are fine then no need to change them.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)
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 11:46 AM.


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