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 07-23-2016, 11:03 PM
03-525iBMW 03-525iBMW is offline
Registered User
 
Join Date: Jun 2016
Posts: 52
Mein Auto:
Autozone diagnostic

This the print out autozone gave me on my 2003 525I BMW . It has a rough idle "hiccups" but can someone plz explain to me exactly what this means....plz
Attached Thumbnails
Click image for larger version

Name:	1469340083367.jpg
Views:	98
Size:	59.9 KB
ID:	571438  
Reply With Quote
Advertisement
  #2  
Old 07-24-2016, 04:59 AM
jimmyjjoo jimmyjjoo is offline
Registered User
 
Join Date: Jul 2016
Posts: 17
Mein Auto:
Looks like dirty fuel injectors or a vacuum leak to me. Are your plugs dry? Or can you hear a hissing noise around the engine bay ?
Reply With Quote
  #3  
Old 07-24-2016, 05:22 AM
jimmyjjoo jimmyjjoo is offline
Registered User
 
Join Date: Jul 2016
Posts: 17
Mein Auto:
Oops, didn't see the MAF code. Your getting restricted air flow to the engine. Clean the air filter and pull the MAF and spray clean it.
Reply With Quote
  #4  
Old 07-24-2016, 05:29 AM
thumper600's Avatar
thumper600 thumper600 is offline
Officially Welcomed to the 'Fest
Location: SW
 
Join Date: Sep 2014
Posts: 417
Mein Auto: '95 540i M-Sport, 01 M5
I'd start with the P0102 by purchasing for $5 a can of MAF cleaner, removing the Mass Air Flow sensor and spraying it clean. Next I'd investigate the park plug boots for cracks or signs of spark leakage and fix as required. Boots are cheap. While in there I'd remove the plugs and investigate or if they're old just replace them. if that doesn't cure your ails look at the number 5 cylinder injector, it may be leaking in that the misfire happens during deceleration.

keep us posted
Reply With Quote
  #5  
Old 07-24-2016, 06:54 AM
crazy4trains's Avatar
crazy4trains crazy4trains is offline
Officially Welcomed to the 'Fest
Location: Milton, WV
 
Join Date: Mar 2011
Posts: 1,197
Mein Auto: 2002 530i Sport
Use MAF specific cleaner only. Make sure the MAF is completely dry before reinstalling it.
__________________
2002 530i
Reply With Quote
  #6  
Old 07-24-2016, 08:04 AM
03-525iBMW 03-525iBMW is offline
Registered User
 
Join Date: Jun 2016
Posts: 52
Mein Auto:
Ok thank you. I will get that
Reply With Quote
  #7  
Old 07-24-2016, 01:27 PM
Barracuz Barracuz is offline
Nothing to read here...
Location: Providence, R.I.
 
Join Date: Apr 2015
Posts: 1,191
Mein Auto: 2001 525i 5 spd
Also check fo any tears in the maf boot/hose. They tear right in the ribs and unless youll it out and bend it youll never notice
__________________
The Crappitto-Stockitto-Baseito

**Word of Caution**
My knowledge is limited. Anything I write in my posts may or may not be accurate. To be honest I think its all crap.
Reply With Quote
  #8  
Old 07-24-2016, 02:36 PM
Burning2nd's Avatar
Burning2nd Burning2nd is offline
Under the lift arms
Location: Under the lift arms
 
Join Date: Aug 2010
Posts: 7,118
Mein Auto: E39 540, E36 328is, E83x3
P102 baby....

Not clean your maf
low circuit input

wiring, or maf ahhhhh... I see where that could come from... Fk it.. just try that 2

I don't think you'd see a low input as a manifested out of range code, but ive seen crazier **** so what eve
__________________
Specializing In BMW, Audi, Mercedes Benz ,Volkswagen, Volvo



15486372<-----

Last edited by Burning2nd; 07-24-2016 at 02:37 PM.
Reply With Quote
Reply

See More Related BMW Stories


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 05:33 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms