Notices
 

  

User Tag List

Thread: Running lean

Page 1 of 4 123 ... LastLast
Results 1 to 10 of 34
  1. Running lean 
    #1
    Join Date
    Dec 2017
    Location
    Lochgelly
    Posts
    25
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    So I've posted before but never really got many replies but I'm really stuck and just don't know where to go from here.

    Car is holding revs, loss of power and fairly hesitant.

    I started off with a boost leak and since its been repaired my car has ran worse than ever and this code started happening

    16555(P0171) - Fuel Trim; Bank 1: System Too Lean

    Maf wasn't working as well as it should so has been replaced.
    Dv has been replaced for the newest revision.
    New spark plugs.
    New fuel filter.
    New n80 valve.
    New n75 after it was snapped.

    After testing a lot of these parts were due for change and not working correctly but it hasn't made a bit of difference to my problems really.

    Long term fuel trim are sitting at 25%. I'm going through petrol like it's going out of fashion, and I thought it was bad enough owning an s3!

    I'm feel like there is a bad connection under inlet manifold, so I'm going to strip and check tomorrow which I think might be the reason my revs are sticking but I'm at a dead end in terms of my lean running engine. Someone help a girl out?

    Sent from my SM-G965F using Tapatalk
    Last edited by Crasher; 24-11-2019 at 12:38 PM.
     
    0 0 0
     

  2. Re: P0171 system too lean 
    #2
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,539
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    28 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    697 Post(s)
    Perhaps it is because we don’t know which car, year or engine type code you have and the post is in an odd place.

    16555(P0171) - Fuel Trim; Bank 1: System Too Lean


    Have you tried taking the oil cap off with the engine running?
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  3. Re: P0171 system too lean 
    #3
    Join Date
    Dec 2017
    Location
    Lochgelly
    Posts
    25
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by Crasher View Post
    Perhaps it is because we donít know which car, year or engine type code you have and the post is in an odd place.

    16555(P0171) - Fuel Trim; Bank 1: System Too Lean


    Have you tried taking the oil cap off with the engine running?
    Sorry I wasn't sure where to post, can I move it?

    Audi s3 2.0 tfsi. Yes I have doesn't run any different. I will add, I also have a pcv delete.
    It's running stage 2 Revo, full turbo back stainless, stage 3 intercooler, loba hpfp, pcv delete.
    Last edited by blondieee; 24-11-2019 at 10:13 AM.
     
    0 0 0
     

  4. Re: P0171 system too lean 
    #4
    Join Date
    Dec 2017
    Location
    Lochgelly
    Posts
    25
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Also to add I made my boost leak again, and the car runs absolutely fine with having a the boost leak??

    I'm not sure what that says, it can't handle the extra air?

    Sent from my SM-G965F using Tapatalk
     
    0 0 0
     

  5. Re: Running lean 
    #5
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,539
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    28 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    697 Post(s)
    You could start by winding back the mods one at a time but is this an EA113 or EA888? Which PCV delete kit have you fitted? How does the crankcase now breath?
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  6. Re: Running lean 
    #6
    Join Date
    Dec 2017
    Location
    Lochgelly
    Posts
    25
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    It's the ea113.

    Sent from my SM-G965F using Tapatalk
     
    0 0 0
     

  7. Re: Running lean 
    #7
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,539
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    28 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    697 Post(s)
    I would start by reversing some of the mods one at a time, to start with reinstate the original crankcase ventilation system with the updated valve 06F 129 101 R. Personally I would also do a system pressure test or smoke test to check for leaks.
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  8. Re: Running lean 
    #8
    Join Date
    Dec 2017
    Location
    Lochgelly
    Posts
    25
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by Crasher View Post
    I would start by reversing some of the mods one at a time, to start with reinstate the original crankcase ventilation system with the updated valve 06F 129 101 R. Personally I would also do a system pressure test or smoke test to check for leaks.
    Just looked and it's a Revo Pcv delete, I believe it gets redirected to the rear cam outlet. I don't have the original to put back it's been on the car for 2 years. I have smoke tested it and there is no more leaks. I was thinking that it must be a fuel related problem as I'm 99% sure I've ruled the air side of it out. My fuel rail pressure seems to be bang on with requested, and I have also swapped out both plugs on the hpfp.. so I was thinking it's got the be injectors or fuel pump, I'm not sure how to confirm either of them. My lpfp sits at 40% at idle and I've just replaced the fuel filter.

    Sent from my SM-G965F using Tapatalk
     
    0 0 0
     

  9. Re: Running lean 
    #9
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,539
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    28 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    697 Post(s)
    Injector failure is rare and for all four to fail equally... nah! Lean running is usually an air leak after the AMM.
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  10. Re: Running lean 
    #10
    Join Date
    Dec 2017
    Location
    Lochgelly
    Posts
    25
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    How do you know all 4 have hypothetically failed equally, surely even if one or 2 have failed, then it would still be throwing more fuel into them all? If one had failed would my symptoms be any different? I will get the smoke tester back out today just to double check, but as I said I have already smoke tested it.

    Sent from my SM-G965F using Tapatalk
     
    0 0 0
     

Page 1 of 4 123 ... LastLast

Similar Threads

  1. Running lean tryed everything
    By troyritsema in forum 1.8T - Engine
    Replies: 3
    Last Post: 07-01-2018, 07:54 PM
  2. P0171 system running lean. Help please?
    By tobyg123123 in forum Audi A6 - C6 Forum - 2005 - 2010
    Replies: 1
    Last Post: 23-02-2017, 07:46 PM
  3. Audi S6 running lean
    By alinomie in forum Audi A6 - C5 Forum - 1998 - 2004
    Replies: 7
    Last Post: 22-09-2010, 04:59 PM
  4. Please Help Golf 1.6 SE 8 Valve Running lean
    By obx102 in forum Golf MK4 - 1999 - 2004
    Replies: 10
    Last Post: 12-12-2008, 03:15 PM
  5. Please Help MK3 ABF Running too Lean
    By Golf-Fiend in forum Golf MK3 - 1993 - 1999
    Replies: 0
    Last Post: 09-05-2008, 05:50 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  




  


Disclaimer: VW Audi Forum is an "independant enthusiast website", administered in line with guidelines supplied by VAG in the UK, and is in no way related to any of the Worldwide Volkswagen,Audi,Seat,Skoda,Bentley,Bugatti,Porsche or Lamborghini group of Companies. For official up to date information on any of there vehicles, please visit the official websites. Any comments made throughout this website, are the views of the respective poster, and in no way represent the views of the VW Audi Forum Administration, or the worldwide Volkswagen & Audi Group of companies.


VW Audi Forum do not vet and are not responsible for any information which is posted in this forum. All content is viewed and used by you at your own risk and we do not warrant the accuracy or reliability of any of the information.


Copyright: Certain "words", "phrases" and "Images" used on this website by the Administration are "Copyright" of Volkswagen GB, Volkswagen AG (Germany), Audi GB, Audi AG (Germany), Volkswagen Motorsport GB, Volkswagen Motorsport AG (Germany), Audi Motorsport AG (Germany), Volkswagen Racing GB, Bentley, Bugatti, Porsche and Lamborghini. No image can be replicated by anyone WITHOUT the relevant Companies written permission.


All trademarks and copyrights remain property of their respective owners.

No part of the VW Audi Forum website or forum may be reproduced without written permission from the site administration


PLEASE NOTE - PERSONAL ABUSE, ABUSE AGAINST THIS OR ANY OTHER WEBSITE OR ANY COMPANY WILL NOT BE TOLERATED. OFFENDERS WILL BE MODERATED OR EVEN BANNED.


This website and forum are best viewed at a minimum resolution of 1024 by 768.



  



- VW AUDI Forum - The #1 Volkswagen (VW) Group Forum - Volkswagen (VW) - Audi - Seat - Skoda - Bentley - Bugatti - Lamborghini - Porsche - VW Audi Forum -


- www.vwaudiforum.co.uk - www.vwaudiforum.co.uk -