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 10-01-2012, 04:06 PM   #1
RSteckhahn
Registered User
 
Join Date: Nov 2008
Location: Oakhurst, NJ
Posts: 407
My Ride: '05 325i
Help with codes - cylinder 1 misfire

I am throwing the following codes:

Table 20
2dc6 - fuel tank level plausibility
2742 - misfire cylinder 1
27CF - ignition cylinder 1

After doing my VANOS in the spring, I had the first two codes followed by some camshaft timing sensor codes. This turned out to be a sensor connection when I reassembled everything.

Now, the ignition cylinder 1, I have no idea where that is coming from. The car has been driving GREAT until this morning, I downshifted to second gear doing about 25 miles an hour to take a turn and when I went to accelerate out of the turn If felt like I was missing something and the car was shaking. At idle, I can feel my seat shake and the exhaust pipes visibly shake. There was also extra exhaust fumes this morning after it happened.

I am hoping this can be a simple fix, I have my first BMWCCA driver school on 10/14 so I need to get right on this.

Any advice??
RSteckhahn is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 10-01-2012, 04:16 PM   #2
scarede46er
Registered User
 
Join Date: Aug 2012
Location: Clemson, SC
Posts: 1,258
My Ride: 2001 BMW 325i ZSP
maybe your fuel pump? The level sender is built onto it. You should change it if you haven't
scarede46er is offline   Reply With Quote
Old 10-01-2012, 07:43 PM   #3
RSteckhahn
Registered User
 
Join Date: Nov 2008
Location: Oakhurst, NJ
Posts: 407
My Ride: '05 325i
I'll look into that. Any other ideas?
RSteckhahn is offline   Reply With Quote
Old 10-01-2012, 08:12 PM   #4
Olddog521
Registered User
 
Join Date: Oct 2012
Location: Silver Spring, MD
Posts: 11
My Ride: 2001 e46 325xi
Addressing the misfire issue...pull the spark plug and make sure it's not corroded...next swap #1 and #2 coil overs to rule out the coil...if the problem changes from 1 to 2 then the coil is the issue
Olddog521 is offline   Reply With Quote
Old 10-01-2012, 11:12 PM   #5
RSteckhahn
Registered User
 
Join Date: Nov 2008
Location: Oakhurst, NJ
Posts: 407
My Ride: '05 325i
That sounds like a good plan to try. Plugs are brand new bug checking the cool packs should be simple enough.
RSteckhahn is offline   Reply With Quote
Old 10-01-2012, 11:30 PM   #6
scarede46er
Registered User
 
Join Date: Aug 2012
Location: Clemson, SC
Posts: 1,258
My Ride: 2001 BMW 325i ZSP
A bad fuel pump can also cause misfires
scarede46er is offline   Reply With Quote
Old 10-02-2012, 06:49 AM   #7
dmax
Registered User
 
dmax's Avatar
 
Join Date: Aug 2006
Location: NJ
Posts: 22,859
My Ride: '99 328i 1.04646 mu
If plugs are brand new, it's also possible that #1 isn't tight enough...nothing personal...it's happened before.

Did you tighten down to 1/2-2/3rds turn after your initial 1/16th turn (as per the NGK box instructions)? Also, the coil boot itself can go bad...so you could just test for that by leaving coils where they are and just swapping coil boot ($10 vs. $80). And check the grounds under the engine cover for tightness too.

Of course, common things like air leaks plague us a lot and translate into misfires and lean codes.

Don't know your mileage, but a clogged fuel filter can stop the car at around 130K miles (from what I've read here)...but if fuel filter or pump, I'd think you'd show more than one cylinder misfiring.

Have you ever used Techron...never a bad idea.

The 'fuel tank plausibility' isn't a code I recall seeing, but you know we have a lot of issues with fuel pumps and the sending unit behind driver. If it's an issue with the latter, you could have fuel showing, but it's in the wrong lobe of tank. Fill up the tank and see if that eliminates the issue. You can also measure fuel pressure...s/b around 50 psi.

Check for air leaks--read jfoj's sig link on that--he runs the 'air leak department'!
__________________


Performing at the Comedy Cove--595 Morris Ave. Springfield NJ reservations 973 376-3840

A recent set Skip to 1:30

Last edited by dmax; 10-02-2012 at 07:04 AM.
dmax is offline   Reply With Quote
Old 10-02-2012, 07:11 AM   #8
RSteckhahn
Registered User
 
Join Date: Nov 2008
Location: Oakhurst, NJ
Posts: 407
My Ride: '05 325i
Car has 86k. Plugs, VCG, and vanos were done in the spring. fuel filter was done around 60k.

I need to find time to get to work on the car. I am nervous about the possibilities that bringing the car to a shop could bring ($$$).
RSteckhahn is offline   Reply With Quote
Old 10-02-2012, 07:17 AM   #9
dmax
Registered User
 
dmax's Avatar
 
Join Date: Aug 2006
Location: NJ
Posts: 22,859
My Ride: '99 328i 1.04646 mu
Try a smoke test. Initially you can try the 'spray carb cleaner' method...or use a cigar.

I'm 'feeling' air leak, but that's mostly just playing the odds.
__________________


Performing at the Comedy Cove--595 Morris Ave. Springfield NJ reservations 973 376-3840

A recent set Skip to 1:30
dmax is offline   Reply With Quote
Old 10-09-2012, 04:55 PM   #10
RSteckhahn
Registered User
 
Join Date: Nov 2008
Location: Oakhurst, NJ
Posts: 407
My Ride: '05 325i
Ignition coil it was!
RSteckhahn is offline   Reply With Quote
Old 10-12-2012, 05:57 PM   #11
Olddog521
Registered User
 
Join Date: Oct 2012
Location: Silver Spring, MD
Posts: 11
My Ride: 2001 e46 325xi
Nice
Olddog521 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 11:23 AM.


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