E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 01-24-2013, 06:10 PM   #1
2003silver330i
Registered User
 
Join Date: Feb 2012
Location: N. Las Vegas, NV
Posts: 1,592
My Ride: 03 BMW 330i
Cold engine misfires in three cylinders

Everyday I continue to get three cylinder misfires. It is always three cylinders. Today it was cylinder 1, 2, 3. Yesterday the misfires were 2, 4, 6. The day before it was 2, 4, 5 and so on. This has been going on for over a month now. Before it would be one random cylinder misfire but the problem has gotten worse. The wife drive the car daily and it is driving her nuts and I get to hear about almost daily. The car has 143K miles on it and these are the things that have been replaced in the last ten months:

Fuel Pump
Fuel Filter
Throttle Body
DISA
Exhaust CPS
Spark Plugs
Valve Cover
Valve Cover Gasket
All 6 Ignition Coils
Cleaned ICV several times
Clean MAF several times
2003silver330i is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 01-24-2013, 06:22 PM   #2
2003silver330i
Registered User
 
Join Date: Feb 2012
Location: N. Las Vegas, NV
Posts: 1,592
My Ride: 03 BMW 330i
Disregard. Wife just got home and said there were no misfires today so I guess I fixed the problem last night with some miracle juice. Will continue to monitor.

Last edited by 2003silver330i; 01-24-2013 at 06:23 PM.
2003silver330i is offline   Reply With Quote
Old 01-24-2013, 08:20 PM   #3
zhenkaaaM3
Registered User
 
Join Date: Feb 2011
Location: New york
Posts: 5,565
My Ride: Fst'r then your e46
The MAF would cause something like that. Cleaning it doesnt always do the job.
In my case, I had 6 misfires due to a slit on my intake boot. Crazy aint it?
__________________
.:Eugene:.

I used to be an e46 owner. I love this one more.

zhenkaaaM3 is offline   Reply With Quote
Old 01-24-2013, 08:42 PM   #4
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 9,346
My Ride: '06 330CiC, '03 M5
You need a scan tool that will read real time data.

You need to look at the fuel trims, temps and MAF readings.

If you have a Droid phone or tablet, $5 Torque App and a $15 OBD to Bluetooth Adapter. If not, see below:

You need to read these links -

http://forum.e46fanatics.com/showthr...ghlight=report

http://forum.e46fanatics.com/showthread.php?t=967204
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
jfoj is offline   Reply With Quote
Old 01-24-2013, 10:16 PM   #5
2003silver330i
Registered User
 
Join Date: Feb 2012
Location: N. Las Vegas, NV
Posts: 1,592
My Ride: 03 BMW 330i
I don't have an android. I was thinking maybe the CCV is toast or MAF. The idle feels low and fluctuates like it is about to die for about 10-15 seconds on a warm engine when starting it up.
2003silver330i is offline   Reply With Quote
Old 01-24-2013, 10:22 PM   #6
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 9,346
My Ride: '06 330CiC, '03 M5
Suggest you get the software in the 2nd link I provided if you do not have a Droid.

The price is up $2 from a few days ago, still under $25 at this moment.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299

Last edited by jfoj; 01-25-2013 at 07:04 AM.
jfoj is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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
Censor is ON





All times are GMT -5. The time now is 11:15 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use