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 01-03-2016, 09:01 AM
gblank1968 gblank1968 is offline
Registered User
Location: Elizabethton,Tn
 
Join Date: Dec 2014
Posts: 9
Mein Auto: 1997 BMW 528i
random missfire after warm up

I'm sure this has been covered before but find the answers on here is difficult for the specific problem. It's a 1997 528i starts up and runs just fine but after it reaches normal opp temp for a little bit it starts to miss. When it does this it like feeling it sliding into gear it's not all of sudden. I can stop shut it off for a few minutes then it starts back up like there was never a problem. Some times it run fine for a while and sometimes it will start missing again more offten the latter. I did get an o2 sensor code and of course the missfire codes. I have experienced the limp mode before when messing around and hitting the red line it kinda seems like that but it comming back. I have changed coil packs moved them around checked plugs with no fixes. I haven't changed the o2 sensor cause I figured the missing and raw fuel is what trigged that I don't know. Sorry this is so long but everyone allways asks for as much detail as possible. Thanks in advance.
Reply With Quote
Advertisement
  #2  
Old 01-03-2016, 09:24 AM
Tutti57's Avatar
Tutti57 Tutti57 is offline
Officially Welcomed to the 'Fest
Location: Rochester, NY
 
Join Date: Jun 2015
Posts: 430
Mein Auto: 1999 540it
Look at your long term fuel trims to see if it is lean or rich to start. If you don't have a scan tool, about $15 can get you what you need to see this data.

Sent from my LGLS770 using Tapatalk
__________________
1999 540iT: aFe Intake | M60 Intake | Bavauto Springs | Bavsound Stage 1

2006 X5 3.0
Reply With Quote
  #3  
Old 01-03-2016, 11:19 AM
gblank1968 gblank1968 is offline
Registered User
Location: Elizabethton,Tn
 
Join Date: Dec 2014
Posts: 9
Mein Auto: 1997 BMW 528i
Could you explain a little on what that is and what it does
Reply With Quote
  #4  
Old 01-03-2016, 11:58 AM
mattmar1's Avatar
mattmar1 mattmar1 is offline
Wingnut
Location: Louisiana
 
Join Date: Dec 2014
Posts: 878
Mein Auto: 1999 5281 5 sp msport
theres a lot that needs to be known yet before this can be responded to with much reliability. you said you had gotten the 02 sensor code, does this mean that you have a code reader? if so, is it one that can read live data? youll need that capability to read LFTF, and lots of other data, and is a good thing to have if youre going to be diy'ing on your own car. theres lota of people who know lots of stuff on here who are willing to help, but you need to be able to give them a bit more info.
__________________
99 528i 5sp sport, vanos rebuild,coolingoverhaul,stripped/repainted/polished/recoated OEM BBS style 5 wheels, new paint , all int/ext LED's clear corners, all vac leaks fixed, eonon 5166, ECS short shifter, LED ae's and fog lights (clear), all brakes, fixed trifecta, rear control arm camber repair, new throttle body, ccv delete, but it ended up as a huge vac leak, returned to new stock ccv, new injectors, cloned and replaced dme.
Reply With Quote
  #5  
Old 01-03-2016, 12:12 PM
bobdmac bobdmac is offline
Older than old school
Location: Oaksterdam, Yay Area
 
Join Date: Feb 2011
Posts: 4,374
Mein Auto: 2001 540i/6, '90 k75s
^^This. I bought this code reader for about $54, if I remember correctly (not from Amazon, but I don't remember where).
__________________
BMW--giving new meaning to the phrase "disposable income."
Reply With Quote
  #6  
Old 01-03-2016, 01:39 PM
gblank1968 gblank1968 is offline
Registered User
Location: Elizabethton,Tn
 
Join Date: Dec 2014
Posts: 9
Mein Auto: 1997 BMW 528i
I had the codes read at the parts store
Reply With Quote
  #7  
Old 01-03-2016, 01:54 PM
mattmar1's Avatar
mattmar1 mattmar1 is offline
Wingnut
Location: Louisiana
 
Join Date: Dec 2014
Posts: 878
Mein Auto: 1999 5281 5 sp msport
Quote:
Originally Posted by bobdmac View Post
^^This. I bought this code reader for about $54, if I remember correctly (not from Amazon, but I don't remember where).
ive got the same, just a different model, the 310. was about the same price on ebay. just finished loading up the inpa suite today on my laptop, now working on figuring it out.
__________________
99 528i 5sp sport, vanos rebuild,coolingoverhaul,stripped/repainted/polished/recoated OEM BBS style 5 wheels, new paint , all int/ext LED's clear corners, all vac leaks fixed, eonon 5166, ECS short shifter, LED ae's and fog lights (clear), all brakes, fixed trifecta, rear control arm camber repair, new throttle body, ccv delete, but it ended up as a huge vac leak, returned to new stock ccv, new injectors, cloned and replaced dme.
Reply With Quote
  #8  
Old 01-03-2016, 01:56 PM
mattmar1's Avatar
mattmar1 mattmar1 is offline
Wingnut
Location: Louisiana
 
Join Date: Dec 2014
Posts: 878
Mein Auto: 1999 5281 5 sp msport
Quote:
Originally Posted by gblank1968 View Post
I had the codes read at the parts store
if youre going to be able to give others useable data to help you, other than "it could be this or that" youll need a reader. while the parts store readers may give you the codes, they cant give you live data if needed. its a good learning experience as well.
__________________
99 528i 5sp sport, vanos rebuild,coolingoverhaul,stripped/repainted/polished/recoated OEM BBS style 5 wheels, new paint , all int/ext LED's clear corners, all vac leaks fixed, eonon 5166, ECS short shifter, LED ae's and fog lights (clear), all brakes, fixed trifecta, rear control arm camber repair, new throttle body, ccv delete, but it ended up as a huge vac leak, returned to new stock ccv, new injectors, cloned and replaced dme.
Reply With Quote
  #9  
Old 01-03-2016, 02:57 PM
bobdmac bobdmac is offline
Older than old school
Location: Oaksterdam, Yay Area
 
Join Date: Feb 2011
Posts: 4,374
Mein Auto: 2001 540i/6, '90 k75s
Quote:
Originally Posted by mattmar1 View Post
if youre going to be able to give others useable data to help you, other than "it could be this or that" youll need a reader. while the parts store readers may give you the codes, they cant give you live data if needed. its a good learning experience as well.
Plus, if you get the infamous "ABS, DSC, Brake Trifecta," it can help you diagnose wheel speed sensor vs. ABS unit problems by giving you live readouts of each wheel speed sensor.
__________________
BMW--giving new meaning to the phrase "disposable income."
Reply With Quote
  #10  
Old 01-03-2016, 06:07 PM
Tutti57's Avatar
Tutti57 Tutti57 is offline
Officially Welcomed to the 'Fest
Location: Rochester, NY
 
Join Date: Jun 2015
Posts: 430
Mein Auto: 1999 540it
The cheapest way I've seen to do this so far is to get a bluetooth obd2 connector from amazon and download the torque app for $5. The total I spent was $15 and I keep the adaptor on me all the time in case I need to use it.

This will get you through most of your basic stuff since it can read/clear emissions codes and graph data.

This video will help clear some of this up.



Sent from my LGLS770 using Tapatalk
__________________
1999 540iT: aFe Intake | M60 Intake | Bavauto Springs | Bavsound Stage 1

2006 X5 3.0
Reply With Quote
  #11  
Old 01-03-2016, 06:13 PM
bobdmac bobdmac is offline
Older than old school
Location: Oaksterdam, Yay Area
 
Join Date: Feb 2011
Posts: 4,374
Mein Auto: 2001 540i/6, '90 k75s
Just a heads up, Torque is an Android-only app, last time I checked.
__________________
BMW--giving new meaning to the phrase "disposable income."
Reply With Quote
  #12  
Old 01-03-2016, 06:15 PM
Tutti57's Avatar
Tutti57 Tutti57 is offline
Officially Welcomed to the 'Fest
Location: Rochester, NY
 
Join Date: Jun 2015
Posts: 430
Mein Auto: 1999 540it
Good catch. There might be something similar on iOS too. There are others for android as well but I am not familiar with them.

Sent from my LGLS770 using Tapatalk
__________________
1999 540iT: aFe Intake | M60 Intake | Bavauto Springs | Bavsound Stage 1

2006 X5 3.0
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 04:34 PM.


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