Cylinder 3 Misfire, Related To Air Mass Meter? - BMW Forum - BimmerWerkz.com
3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 05-17-2005, 09:10 PM
n00b
 
Join Date: May 2005
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jasonharlos is an unknown quantity at this point
(Thread Starter)
I have a '99 328i with 83,000k miles that is periodically misfiring. The check engine light comes on and I get two codes: P0303 (Cylinder 3 misfire), and P1250 (Air/Fuel Mixture, related to Air Mass Meter). It always happens on the same cylinder. Whenever the car starts to misfire, it will stop after I shut off and restart the car. I check the connector on the Air Mass Meter and it appears to be fine. Can anyone provide with some ideas on what to check? It doesn't make sense to me that it would be the spark plug or wire since the car will sometimes run for several days without a problem. Performance does not seem to be affected either.
jasonharlos is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 05-17-2005, 11:04 PM
1st Gear Member
 
Join Date: Aug 2004
Location: Winston-Salem, North Carolina
Posts: 252
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Mortiorchis is an unknown quantity at this point
Quote:
Originally posted by jasonharlos@May 17 2005, 08:10 PM
I have a '99 328i with 83,000k miles that is periodically misfiring. The check engine light comes on and I get two codes: P0303 (Cylinder 3 misfire), and P1250 (Air/Fuel Mixture, related to Air Mass Meter). It always happens on the same cylinder. Whenever the car starts to misfire, it will stop after I shut off and restart the car. I check the connector on the Air Mass Meter and it appears to be fine. Can anyone provide with some ideas on what to check? It doesn't make sense to me that it would be the spark plug or wire since the car will sometimes run for several days without a problem. Performance does not seem to be affected either.
[snapback]345428[/snapback]
Other people have run into this problem. Your only choice is swapping engines:
Attached Thumbnails
Click image for larger version

Name:	bmwv12.jpg
Views:	640
Size:	124.4 KB
ID:	20554  

LongHairedHippy: Just let him die out. The odds are on that he won't reproduce, so the problem will take care of itself
Mortiorchis is offline  
#3 (permalink) Old 05-17-2005, 11:16 PM
n00b
 
EuRopE1981's Avatar
 
Join Date: Mar 2005
Location: Myrtle Beach, South Carolina
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
EuRopE1981 is an unknown quantity at this point
Send a message via AIM to EuRopE1981 Send a message via MSN to EuRopE1981 Send a message via Yahoo to EuRopE1981
I would check the coil on the cylinder, my car was doing the same thing on cylinder 5
EuRopE1981 is offline  
#4 (permalink) Old 05-17-2005, 11:20 PM
n00b
 
Join Date: May 2005
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jasonharlos is an unknown quantity at this point
(Thread Starter)
Quote:
Originally posted by EuRopE1981@May 17 2005, 11:16 PM
I would check the coil on the cylinder, my car was doing the same thing on cylinder 5
[snapback]345475[/snapback]
Is there a way to tell if the coil is bad, short of replacing it with a new one?
jasonharlos is offline  
#5 (permalink) Old 05-18-2005, 12:11 PM
1st Gear Member
 
Join Date: Feb 2005
Location: Chadds Ford, PA
Posts: 110
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hootie361 is an unknown quantity at this point
Send a message via AIM to Hootie361
swap the suspect coil with a non-suspect coil. clear the error codes, run the car, shut it off. check the error codes again. if the error followed the suspect coil, voila. if not, it's another problem.

check the spark plug shaft for oil residue while you have the coil out.

Your Lane ------>
Hootie361 is offline  
#6 (permalink) Old 10-05-2009, 11:52 AM
n00b
 
Join Date: Oct 2009
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jmaurip is on a distinguished road
Quote:
Originally Posted by Hootie361 View Post
swap the suspect coil with a non-suspect coil. clear the error codes, run the car, shut it off. check the error codes again. if the error followed the suspect coil, voila. if not, it's another problem.

check the spark plug shaft for oil residue while you have the coil out.

So what if thier is oil residue?
jmaurip is offline  
#7 (permalink) Old 10-06-2009, 08:17 AM
2nd Gear Member
 
Join Date: Jul 2008
Posts: 374
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
FCPGroton is on a distinguished road
Quote:
Originally Posted by jmaurip View Post
So what if thier is oil residue?
That means the coil is bad and leaking oil. If it is not the coil, it could be a bad spark plug.

Also, clean your MAF.

FCP Groton
877-634-0063 | info@fcpgroton.com

FCP Euro - European Car Parts Specialists
FCP Import - Import Replacement Car Parts
FCPGroton is offline  
#8 (permalink) Old 10-06-2009, 08:47 AM
n00b
 
Join Date: Oct 2009
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jmaurip is on a distinguished road
Quote:
Originally Posted by FCPGroton View Post
That means the coil is bad and leaking oil. If it is not the coil, it could be a bad spark plug.

Also, clean your MAF.
what is the MAF, also I meant inside where the pistion is not on the spark plug or plugs. The plugs are clean and new......
jmaurip is offline  
#9 (permalink) Old 10-06-2009, 10:13 AM
Neutral Member
 
Join Date: Nov 2008
Posts: 74
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
sPoNgE-SA is on a distinguished road
You can also check the ohms on the coils, make sure they are all the same ohms
sPoNgE-SA is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E46, E90)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Erratic Idle / Misfire / Cutting out makdolby 3-Series (E36) 12 02-05-2012 07:57 AM
Clutch Has No Resistance...need Help!! SDSUe36 3-Series (E36) 16 04-06-2011 01:48 PM
e39 540i Air Mass Sensor HardStep 5-Series (E12,E28, E34, E39, E60) 1 10-17-2005 10:15 PM
*The E36 Turbo Thread* SpeedInfusion 3-Series (E36) 9 10-16-2005 09:10 PM
Misfire Cylinder 5 gthoman 3-Series (E46, E90) 19 02-23-2005 02:07 PM

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome