E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Misfire/Hesitation Issue



Reply
 
Thread Tools Search this Thread
      09-06-2018, 11:02 AM   #1
lcw333
Registered
0
Rep
3
Posts

Drives: E90 335i
Join Date: Sep 2018
Location: Arkansas

iTrader: (0)

Misfire/Hesitation Issue

Hello! I am having some issues with my 2007 335i. I have searched every thread I can find about misfire/hesitation issues.

Background:
It is a 2007 335i with manual transmission with 120,000 miles. It has the sport package so it does have the oil cooler. It has had a Dinan stage 2 tune since around 54,000 miles.

Issue:
I noticed a hesitation at full throttle between 3,000-5,000 rpms. I also noticed a rough idle on startup occasionally.

Repairs so far:
I replaced all six spark plugs, all six coil packs, & all six fuel injectors (index 12). The air filter has been replaced within the last 6 months as well. I noticed the rough idle has gotten better if not completely gone. The hesitation at full throttle between 3,000-5,000 rpms is still present. Oddly enough as the car warms up, the hesitation is worse/more noticeable.

I'm at a loss as what to do next. The dealer as well as an Indy shop have said the car doesn't show any codes but after driving the car, they feel the issue as well. Thank you for any help in advance!
Appreciate 0
      09-06-2018, 11:31 AM   #2
Bimmer_Engineer
Lieutenant Colonel
Bimmer_Engineer's Avatar
1044
Rep
1,667
Posts

Drives: 2007 335i
Join Date: May 2018
Location: Louisiana

iTrader: (0)

Garage List
A log would be helpful...
Appreciate 0
      09-06-2018, 12:35 PM   #3
Spyro235
Captain
259
Rep
714
Posts

Drives: '10 X5D, '04 330i ZHP
Join Date: Jan 2017
Location: CO

iTrader: (0)

If it changes with warmth, my main question would be to see if the AFR's are changing via logging/ diagnostics tools. Could be your O2 sensors, pre cats, whcih are how the engine figures out how to run. Mine was giving me massive idlinga nd stmbling issues before is threw any codes.
__________________
Daily/ Tow: 2010 X5 35D - 326k, Deleted w/DUDMD Stage 2, Sutphin Trans tune, Comfort seat retrofit
Fun car: 2004 ZHP 6mt - 256k miles, z4m FCAB, stock. Drift car: 2001 330i for sale
Appreciate 2
      09-07-2018, 03:38 PM   #4
lcw333
Registered
0
Rep
3
Posts

Drives: E90 335i
Join Date: Sep 2018
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by Spyro235 View Post
If it changes with warmth, my main question would be to see if the AFR's are changing via logging/ diagnostics tools. Could be your O2 sensors, pre cats, whcih are how the engine figures out how to run. Mine was giving me massive idlinga nd stmbling issues before is threw any codes.
Quote:
Originally Posted by Spyro235 View Post
If it changes with warmth, my main question would be to see if the AFR's are changing via logging/ diagnostics tools. Could be your O2 sensors, pre cats, whcih are how the engine figures out how to run. Mine was giving me massive idlinga nd stmbling issues before is threw any codes.
The BMW dealership told me the issues was my injectors, and they did not see anything else. Does the O2 sensors usually cause this problem, even without throwing a code?
Appreciate 0
      09-10-2018, 12:12 PM   #5
lcw333
Registered
0
Rep
3
Posts

Drives: E90 335i
Join Date: Sep 2018
Location: Arkansas

iTrader: (0)

Could this be the HPFP failing? When the HPFP fails, can it be gradual, or does it just fail and then go into limp mode?
Appreciate 0
      09-12-2018, 08:49 AM   #6
tisdrew
First Lieutenant
98
Rep
300
Posts

Drives: 2009 335i
Join Date: Dec 2015
Location: Melbourne, FL

iTrader: (0)

Quote:
Originally Posted by lcw333 View Post
Could this be the HPFP failing? When the HPFP fails, can it be gradual, or does it just fail and then go into limp mode?
Gradual failure typically. Without logs we can't determine if it's pulling timing, not hitting boost target, or not getting fuel (could be either lpfp or hpfp). Spark, air, fuel. I hope you didn't pay them for diagnostics and not get a diagnosis.
__________________
"Wheels and exhaust aren't a build"
Appreciate 0
      09-12-2018, 09:20 AM   #7
Bimmer_Engineer
Lieutenant Colonel
Bimmer_Engineer's Avatar
1044
Rep
1,667
Posts

Drives: 2007 335i
Join Date: May 2018
Location: Louisiana

iTrader: (0)

Garage List
Quote:
Originally Posted by lcw333 View Post
Could this be the HPFP failing? When the HPFP fails, can it be gradual, or does it just fail and then go into limp mode?
Can you please get a bimmer geeks cable, a cheap android tablet, and a MHD logging license and post a log...this is all speculative without codes or a log.

MHD can read codes too...
Appreciate 0
      09-18-2018, 10:43 AM   #8
Spyro235
Captain
259
Rep
714
Posts

Drives: '10 X5D, '04 330i ZHP
Join Date: Jan 2017
Location: CO

iTrader: (0)

Quote:
Originally Posted by lcw333 View Post
The BMW dealership told me the issues was my injectors, and they did not see anything else. Does the O2 sensors usually cause this problem, even without throwing a code?
My o2 sensor was causing this issue, without throwing any code. It eventually did throw a code, but it was failing/ missing for months before it actually triggered the code.
__________________
Daily/ Tow: 2010 X5 35D - 326k, Deleted w/DUDMD Stage 2, Sutphin Trans tune, Comfort seat retrofit
Fun car: 2004 ZHP 6mt - 256k miles, z4m FCAB, stock. Drift car: 2001 330i for sale
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -5. The time now is 07:16 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST