Dismiss Notice
Hi Guest. If you're not subscribing to us on YouTube yet, you're missing out on car news and reviews. Subscribe to our channel to get notified when we post new videos.

17536: Fuel Trim: Bank 1 (Mult): System too Lean

Discussion in '(Archived) Ask for help with your car and FAQs' started by Martyn, Dec 30, 2005.

  1. Martyn

    Martyn SCN Admin

    Joined:
    Jun 12, 2001
    Messages:
    1,624
    Likes Received:
    0
    Keep ya fingers crossed Vern, new lambda will be fitted at 5pm today!!! :)

    I shall let you guys know the result.
     
  2. PhilW

    Joined:
    Nov 2, 2004
    Messages:
    9,336
    Likes Received:
    0
    Good luck. Hope its that.
     
  3. Martyn

    Martyn SCN Admin

    Joined:
    Jun 12, 2001
    Messages:
    1,624
    Likes Received:
    0
    Car is still **** with the new probe. Very annoyed :(

    Samco TIP is coming off next....
     
  4. vern

    vern I Miss Her Below!

    Joined:
    Jun 17, 2003
    Messages:
    2,020
    Likes Received:
    0
    :( Sorry to hear mate........ niggle this one, any idea from paul aka max torque? gotta be an airleak eh? :cry:
     
  5. Martyn

    Martyn SCN Admin

    Joined:
    Jun 12, 2001
    Messages:
    1,624
    Likes Received:
    0
    Standard TIP is on, all hoses on the TIP have been tighened but I'm still having issues :(

    The car pulls much better with the Samco TIP on too....even if the fit is **** ;)
     
  6. Jonzy

    Jonzy Guest

    what happens if you drive with the relevant sensors unplugged - wild guess... id be screaming by now.
     
  7. m0rk

    m0rk sarcasm comes free
    Site Owner

    Joined:
    May 19, 2001
    Messages:
    27,832
    Likes Received:
    24
    I think he said when he disconnected the MAF it went like billyo
     
  8. Feel

    Feel Veedubya 'velle

    Joined:
    Jun 12, 2003
    Messages:
    4,918
    Likes Received:
    1
    :think: Running lean would make it a leak between the MAF and the turbo, wouldn't it? Otherwise it would be a boost leak and it would run rich? But he's swapped the TIP back.

    It's not a leak on one of the ancillary pipes off the TIP is it, post DV or something? I think I saw a nice shiney 007p under there the other week?
     
  9. cordobabrendy

    cordobabrendy FOOORRREEE!

    Joined:
    Aug 24, 2001
    Messages:
    7,642
    Likes Received:
    0
    is the ic airtight?
     
  10. Martyn

    Martyn SCN Admin

    Joined:
    Jun 12, 2001
    Messages:
    1,624
    Likes Received:
    0
    Phil, OEM TIP is back on and everything is as tight as you'd want it to be....including around the 007P. The thick pipe connecting to the DV and 'Cut Off Valve' could do with replacing though as I've never liked the look at them!

    Brend, IC pipes are tight as you'd want them to be too....
     
  11. m0rk

    m0rk sarcasm comes free
    Site Owner

    Joined:
    May 19, 2001
    Messages:
    27,832
    Likes Received:
    24
    v low p-loss so presumably
     
  12. Feel

    Feel Veedubya 'velle

    Joined:
    Jun 12, 2003
    Messages:
    4,918
    Likes Received:
    1
    Maybe I should say what I said in that deleted post then - shame you can't rig up a device like Steve Schwing sells - to allow you to pressurise your system with a compressor, with the engine off...
     
  13. Jonzy

    Jonzy Guest

    can the revo be turned off?
     
  14. Glenn

    Glenn Full Member

    Joined:
    Oct 15, 2001
    Messages:
    513
    Likes Received:
    0
    It could also be a leak on the exhaust side, pre-lambda probe or as I mentioned to Martyn the other day, the Lambda bung is keeping the probe out of the main flow, like the post-cat spacers - would expect to see idle trim way off as well though?

    Lean is too much air or not enough fuel - hose to FPR from manifold ok? One thing I did think was odd was that when we cleared the trims live with engine running, you can hear the dip in RPM as it adjusts but the duration shown in VAG-COM didn't change? If VAG-COM doesn't show the corrected duration, then say if Martyn's 4 bar reg is actually a 3 bar in the wrong box or something (stranger things have happened!) we wouldn't be able to see it? :confused:

    Haven't got Excel on this machine but I'll cross check my duration numbers at given mass flow with yours tomorrow to see how they match up.
     
  15. Martyn

    Martyn SCN Admin

    Joined:
    Jun 12, 2001
    Messages:
    1,624
    Likes Received:
    0
    Jonzy, Revo is set to standard at the moment but 'Revo - Standard' is different to 'Standard ECU - Standard'.

    Glenn, DP bolts were double checked today when the probe was replaced. 4 bar FPR is definately a 4 bar one, it's engraved on the side :)

    Phil, pressure tester would be very handy.
     
  16. Jonzy

    Jonzy Guest

    Any damaged/dodgy wiring giving incorrect readings, I had a problem with a MAF sensor on my last car, turned out to be a corroded pin in the plug.
     
  17. vern

    vern I Miss Her Below!

    Joined:
    Jun 17, 2003
    Messages:
    2,020
    Likes Received:
    0
    :wtf: badluck mate, as jonzy says, i think maf related , check plug and all wiring connections to and from, weird one, hope it aint your ecu!!!!i doubt it though
     
  18. Glenn

    Glenn Full Member

    Joined:
    Oct 15, 2001
    Messages:
    513
    Likes Received:
    0
    While we're clutching at straws, I had another thought last night - secondary air injection, where does the pipe out of the pump feed into the exhaust? I couldn't see on mine this morning but check it's intact - no hairline cracks, etc. Again, I'd expect to see that at idle or incorrect flow codes but it's worth a check before buying more new bits?
     
  19. vern

    vern I Miss Her Below!

    Joined:
    Jun 17, 2003
    Messages:
    2,020
    Likes Received:
    0
    Any update martyn mate? ;)
     
  20. Martyn

    Martyn SCN Admin

    Joined:
    Jun 12, 2001
    Messages:
    1,624
    Likes Received:
    0
    Vern,

    It's being remapped again on Sunday mate so fingers crossed.

    If it doesnt get fixed soon I think i'll be leaving the SEAT and buying something reliable :)
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice