1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Low Power Update

Discussion in 'A3/S3 Forum (8L Chassis)' started by scoobyra, Nov 13, 2010.

  1. scoobyra
    Offline

    scoobyra It's not f@cking ORANGE!!!!!

    Joined:
    Feb 21, 2008
    Messages:
    798
    Likes Received:
    1
    [Nov 13, 2010]
    For those of you that know, and those of you that don't - I've been experiencing some rather odd issues with my car which resulted in some pretty strange runs on Bill's rolling road last week.

    Power runs of 218/237/216bhp with torque figure that didn't correspond and an odd missfire on idle.

    People keep telling me it's the MAF so again today, the MAF was changed for the 3rd time and.......no difference!!

    According to VAG COM and the boost graph from Bill, there's no air leaks but cylinder 4's voltage was right down and when revved, was still really down on the others of which cylinder 2 was higher than all the rest. Coil Pack??? Changed and...............FFS!!! still the bloody same!!

    Plugs were changed 800 miles ago and that didn't cure the missfire on idle so it's not them.
    I've checked all the wiring, connections and pipework so WTF is causing it??

    I'm now getting severely pissed off with it!! :banghead:
    #1
  2. Ads

    Ads

    [Dec 29, 2014]

  3. Mpathe
    Offline

    Mpathe 1st gear

    Joined:
    Aug 29, 2009
    Messages:
    394
    Likes Received:
    0
    [Nov 13, 2010]
    might be worth just checking the earth wires, i think theres a few bolted down to the left hand chassis leg, underneath the airbox
    #2
  4. Broken Byzan
    Offline

    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

    Joined:
    Apr 26, 2004
    Messages:
    12,778
    Likes Received:
    325
    [Nov 13, 2010]
    Have you thought about changing the coilpack wiring loom? They go brittle and the insulation cracks causing arcing, however small
    #3
  5. scoobyra
    Offline

    scoobyra It's not f@cking ORANGE!!!!!

    Joined:
    Feb 21, 2008
    Messages:
    798
    Likes Received:
    1
    [Nov 13, 2010]
    I didn't even realise that I could change the coilpack wiring loom??
    #4
  6. Broken Byzan
    Offline

    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

    Joined:
    Apr 26, 2004
    Messages:
    12,778
    Likes Received:
    325
    [Nov 13, 2010]
    its available, but needs to spliced in IIRC.
    #5
  7. Madeley
    Offline

    Madeley Member VCDS Map User

    Joined:
    Jun 27, 2010
    Messages:
    125
    Likes Received:
    0
    [Nov 13, 2010]
    And I read on here there only about 20 quid.
    #6
  8. sportstractor
    Offline

    sportstractor Chugger

    Joined:
    Nov 25, 2009
    Messages:
    2,715
    Likes Received:
    32
    [Nov 13, 2010]
    well if you can swap coil packs around and it still gives you same result of cyl 4, id be looking at the coil packs wiring also
    #7
  9. rossbrownlee
    Offline

    rossbrownlee Ross_S4

    Joined:
    Aug 16, 2009
    Messages:
    719
    Likes Received:
    0

Share This Page