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Running Lean

Discussion in 'A3/S3 Forum (8L Chassis)' started by Danny Cawsey, Jan 11, 2013.

  1. Danny Cawsey
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    Danny Cawsey Cawsey

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    [Jan 11, 2013]
    Hi Guys i put my S3 on the dyno today to see what power it is making and found out it was very low on power and running extremely lean, Any ideas as to what could be the problem? Fuel pump knackered?

    Here are the Graphs.

    Dyno Graph 1.jpg
    Dyno Graph 2.jpg
    Dyno Graph 3.jpg
    #1
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  3. Alex C
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    Alex C Well-Known Member

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    [Jan 11, 2013]
    checked the pressure hose to your FPR?
    #2
  4. Danny Cawsey
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    Danny Cawsey Cawsey

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    [Jan 11, 2013]
    Yep checked that, seems to be fine.
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  5. s3dave
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    s3dave TFSI Hybrid

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    [Jan 11, 2013]
    Checked the FPR for gunk ?
    It may be a tired pump, i put an inline one in to help out...
    #4
  6. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jan 11, 2013]
    If its a tired pump then an inline pump is not a fix... do you have logs to support the AFR on the dyno graph? need to check requested vs actual... could be the maps actually asking for that AFR...

    Its most likely the pump in which case a new one is required but would need to see the AFR logs from VCDS to confirm...

    <tuffty/>
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  7. Danny Cawsey
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    Danny Cawsey Cawsey

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    [Jan 11, 2013]
    Cheers Tuffty, i dont have logs as i dont have access to VCDS, unless anyone in Bristol has VCDS and wants to log it for me tomorrow? :)
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  8. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jan 11, 2013]
    Might be worth taking a trip up to Bill's then as you are just down the road... J13 M5...

    <tuffty/>
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  9. Danny Cawsey
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    Danny Cawsey Cawsey

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    [Jan 11, 2013]
    I was just thinking that, i also have an oil leak so its prob not a bad idea. Ive got a free day tomorrow if bills likely to have space.
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  10. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jan 11, 2013]
    Not sure what his schedule is like but I suspect there would be easily time for a road log if nothing else as it will be evident fairly quickly whats going on

    May see you tomorrow then...

    <tuffty/>
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  11. Danny Cawsey
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    Danny Cawsey Cawsey

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    [Jan 11, 2013]
    Ok then mate ill pop up tomorrow, whats a good time?
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  12. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jan 12, 2013]
    Best bet is to give Bill a ring just after 9am mate...

    http://www.facebook.com/Badger5Ltd

    <tuffty/>
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  13. Danny Cawsey
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    Danny Cawsey Cawsey

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    [Jan 12, 2013]
    So i went to Bills today and did a couple of runs on the dyno to find out it is the fuel pump that was knackered,
    Cheers Tuffty and Bill for checking my car and nice to meet you both.
    #12
  14. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Jan 13, 2013]
    you're welcome
    #13
  15. Gizmo20VT
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    Gizmo20VT Member

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    [Jan 13, 2013]
    I have the same problem, saving for oem intank pump... Pretty costly!
    #14
  16. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Jan 14, 2013]
    VDO listing at £200 on ECP website currently
    VDO Fuel Pump Part No.: 441441110
    #15
  17. 666markyboy
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    666markyboy Well-Known Member

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    [Jan 14, 2013]
    Don't you just love this forum ..... great work guys :respekt:
    #16
  18. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jan 14, 2013]
    They appear to be doing 20% off too...

    <tuffty/>
    #17
  19. Danny Cawsey
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    Danny Cawsey Cawsey

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    [Jan 14, 2013]
    Cheers guys.
    #18

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