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 04-01-2013, 06:38 AM   #1
bimer21
Registered User
 
Join Date: Feb 2012
Location: Miami, FL
Posts: 730
My Ride: stick 325i
Weird misfiring

Hello all fanatic i have been got this weird misfiring already for a month.
Problem: every time i start my car i got misfiring on cylinders 2,5,6 codes P1345, P1351, P1352, but after car is on by 10sec misfiring go away but it only happen when i turn on the car, sometimes i need to turn it off and on again because after 10sec doesn't go away, and when i start it again start misfiring 10sec late its gone and engine runs normal.
I replace my VCG around 3 months ago but problem start just 1 month ago.
What could i do? Thanks
bimer21 is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 04-01-2013, 07:08 AM   #2
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 12,079
My Ride: '06 330CiC, '03 M5
Read the first link below in my signature.

Pay attention to the SAP vacuum lines if your is vacuum controlled and the DISA.
__________________
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 04-01-2013, 07:08 AM   #3
bimer21
Registered User
 
Join Date: Feb 2012
Location: Miami, FL
Posts: 730
My Ride: stick 325i
Thanks will read everything now
bimer21 is offline   Reply With Quote
Old 04-01-2013, 07:46 AM   #4
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 12,079
My Ride: '06 330CiC, '03 M5
Minor possibility that the valve cover is actually cracked, however, this would be on the the last things to address as your CCV system and many other vacuum hoses likely need to be replaced first.

Good luck.
__________________
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 04-01-2013, 07:55 AM   #5
bimer21
Registered User
 
Join Date: Feb 2012
Location: Miami, FL
Posts: 730
My Ride: stick 325i
Yeah i will perform a smoke test first, then will try to clean MAF, because I'm getting P0171 P0174 codes on cruising speed too, if everything is good and problem keep will change spark plug which they have 20k now then coils, if keep problem, DISA and VANOS, my car its a 01 325i with 150K miles, but never present problem of lack of power or idle just this weird misfiring now at start time only
bimer21 is offline   Reply With Quote
Old 04-01-2013, 08:47 AM   #6
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 12,079
My Ride: '06 330CiC, '03 M5
Cold start misfires are most likely lean problems.

Smoke tests do not find all the problems. DISA issues are a clear example of where a smoke test fails, however, 1 wire connector and 2 Torx screws will answer all the DISA questions that you may have.

Could also be a fuel pump soft failure as well, check the 2nd link below in my signature.
__________________
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 04-01-2013, 09:25 AM   #7
bimer21
Registered User
 
Join Date: Feb 2012
Location: Miami, FL
Posts: 730
My Ride: stick 325i
I replace my fuel pump and filter with my maintenance at 130k now I'm 150k, and how do i test my DISA? I'm scare if i take it out and find out its bad that i don't have the replacement for it now, so first will do smoke test and clean MAF and wait to see what happen but I'm really sure this wont solve my headache, but will try by the way! I want to thanks you, your post and you have calm me down a little thanks a lot for help men, I'll do same when you need it thanks
bimer21 is offline   Reply With Quote
Old 04-01-2013, 10:54 AM   #8
Balf
Registered User
 
Join Date: Nov 2012
Location: Virginia
Posts: 6
My Ride: 330Ci
Hey, I thought I would give some insight on my experience with this as well. I had the same issue with random misfires and those codes for both banks running lean. I changed the spark plugs, filters.... even tried injector cleaner lol. In the end I pulled the DISA valve. Although the unit was fine, the o-ring had flattened out partially which allowed air to slip through. I ordered an o-ring from German auto solutions and that was the fix for me. No more misfires or codes. Good luck
Balf is offline   Reply With Quote
Old 04-01-2013, 11:02 AM   #9
bimer21
Registered User
 
Join Date: Feb 2012
Location: Miami, FL
Posts: 730
My Ride: stick 325i
Thanks for your comment I will take it apart inspect it and order a new O ring too, if its bad I will replace it
They sell this O ring at dealership?
And i just see another thing on my ride my MAF does not have any part number, mark or BMW logo!
Is this thing a 20$ aftermarket ebay crap? Ewww
bimer21 is offline   Reply With Quote
Old 04-01-2013, 12:22 PM   #10
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 12,079
My Ride: '06 330CiC, '03 M5
323/328 DISA O-ring can be purchased at the dealer. Not the case with 325/330. See classified section or the end of the link in my first link in my signature. A member here sells the O-rings for $2 with SASE.
__________________
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 04-01-2013, 12:22 PM   #11
Nervous
Registered User
 
Join Date: Dec 2010
Location: MD, USA
Posts: 1,486
My Ride: 01 330CI 6MT ZSP EU3
I had random misfires at startup in several cylinders, having new fuel pump/filter, etc. Ended up with constant misfire at cyl 5 and this was the coil. Replaced all 6 coils and issue is gone now. The old coils (bremi) have visible burn signs on plastic cases.
Nervous is offline   Reply With Quote
Old 04-02-2013, 09:31 PM   #12
bimer21
Registered User
 
Join Date: Feb 2012
Location: Miami, FL
Posts: 730
My Ride: stick 325i
I clean today my MAF with ARC cleaner and make a smoke test which i pass it, i have any air leaks on the car, also i use seafoam and remove the brake vacuum hose and use it to clean intake manifold which i feel a difference how it runs now, i shut off the engine and leave like that after 30min of running, i leave it off by around 40min when back and start it and weird misfiring were gone now, i will post again tomorrow morning when turn it on again to see if my problem is gone, actually took some pic of my MAF which i think its aftermarket can someone help me to tell if it is, thats the only thing it says. Thanks
Attached Thumbnails
Click image for larger version

Name:	ImageUploadedByBimmerApp1364952666.646994.jpg
Views:	29
Size:	74.2 KB
ID:	498492   Click image for larger version

Name:	ImageUploadedByBimmerApp1364952676.473399.jpg
Views:	27
Size:	81.8 KB
ID:	498493  
bimer21 is offline   Reply With Quote
Old 04-02-2013, 09:55 PM   #13
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 12,079
My Ride: '06 330CiC, '03 M5
Hope cleaning helps, however, do not be surprised if nothing changes.
__________________
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 04-02-2013, 09:57 PM   #14
bimer21
Registered User
 
Join Date: Feb 2012
Location: Miami, FL
Posts: 730
My Ride: stick 325i
I wont, i know it just 25% of my problem get fix but i will keep reading your post, they are excellent, and will keep going step by step, is my MAF OEM?
bimer21 is offline   Reply With Quote
Old 04-03-2013, 06:26 AM   #15
bimer21
Registered User
 
Join Date: Feb 2012
Location: Miami, FL
Posts: 730
My Ride: stick 325i
Well i was something that i just want to erase from "TO DO LIST", but yes you were right i didn't change nothing, still doing that misfiring at start but now is less, next step DISA and VANOS seal.
bimer21 is offline   Reply With Quote
Old 04-03-2013, 07:03 AM   #16
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 12,079
My Ride: '06 330CiC, '03 M5
Likely the SAP vacuum line that runs around the valve cover to under the intake.

There are vacuum connections and plugs under the rear of the intake near intake port #5. Smoke test will not always pick up this issue due to the control solenoid.

Would replace the DISA O-ring and check the SAP vacuum connections and hoses very carefully.
__________________
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 04-03-2013, 07:24 AM   #17
bimer21
Registered User
 
Join Date: Feb 2012
Location: Miami, FL
Posts: 730
My Ride: stick 325i
Yeas i did check that one too is the one that runs around the VC and the other end is on egr or something like that that connect to secondary air pump?
And DISA will contact member when get home today to see if i can get some new O ring for it to take it apart and inspect it, if my flap if broken? What should i do?
I know replace it, but i cant put it back to keep like that till i buy a new one?

Last edited by bimer21; 04-03-2013 at 07:24 AM.
bimer21 is offline   Reply With Quote
Old 04-03-2013, 11:20 AM   #18
Nervous
Registered User
 
Join Date: Dec 2010
Location: MD, USA
Posts: 1,486
My Ride: 01 330CI 6MT ZSP EU3
You may continue chasing the ghost, but for some reasons you are ignoring the most probable reason: coils and their boots. Start at least with swapping coils and check if codes follow.
Nervous is offline   Reply With Quote
Old 04-03-2013, 11:25 AM   #19
bimer21
Registered User
 
Join Date: Feb 2012
Location: Miami, FL
Posts: 730
My Ride: stick 325i
Thanks but i replace then with my maintenance at 130k now 150k, and install 6 of then new OEM from dealership, but i will move then to see if misfiring change if it does i will replace then again, thanks
bimer21 is offline   Reply With Quote
Old 04-03-2013, 11:29 AM   #20
scarede46er
Registered User
 
Join Date: Aug 2012
Location: Clemson, SC
Posts: 1,258
My Ride: 2001 BMW 325i ZSP
+1 on the SAP line. That would explain the rough start but subsequent normal operation.
scarede46er 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 03:47 AM.


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