Volks AutosMonster Motorsport
Results 1 to 20 of 20
  1. #1
    Tastyterrier's Avatar
    Monkey Trainer

    Status
    Offline
    Join Date
    Jul 2003
    Location
    Staffordshire
    Posts
    341

    N75J and Coilpacks??

    I recently had a coilpack die on me and as I had two others that were original to the car, I decided on replacing all three.

    After this I found the car started to stutter when it's been ragged for a while. Every so often it also wouldn't let me rev past 3000rpm, which I guess is it going into limp mode.

    After trying a few different things (throttle body clean, check for air leaks etc), I replaced the N75J valve with the original and it seems to have cured the issue. I've been running the J valve for a while now with no issues, so it seems strange that a coilpack change should cause these problems. With the original valve back on, my car doesn't feel nearly so reponsive

    Before I stick this J valve in the classifieds, is there anything else I should look at? I running Bosch Super4 plugs, should I try changing these to something else, would it make a difference?
    A3 1.8TQS: Supersport Springs and Shocks, Xenons, BMC Filter, 18" OEM TTV6's, Bailey DV, N75J and Phase 1 Custom Code.

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    1animal1's Avatar
    The Clar!! it mouves!!!

    Status
    Offline
    Join Date
    Dec 2007
    Location
    Sheffield
    Posts
    9,990
    i think the coil packs going has some effect on the sparks, i personally would just take the existing ones out and clean them up before spending anymore money mate....
    Xbox 360 gamer ID : Timffy

    Grey Triumph Sprint 1050 ST
    Silver BMW 535D Tourer - Fully loaded 340BHP 700NM torque
    2009 8P3 S3 Brilliant Red - Sold
    2001 F/L S3 Dolphin Grey - Sold
    1999 Pre F/L Silver A3 1.8T - Sold

  4. #3
    Tastyterrier's Avatar
    Monkey Trainer

    Status
    Offline
    Join Date
    Jul 2003
    Location
    Staffordshire
    Posts
    341
    Forgive my ignorance, but won't taking the plugs out mean that the sealing ring is busted?
    A3 1.8TQS: Supersport Springs and Shocks, Xenons, BMC Filter, 18" OEM TTV6's, Bailey DV, N75J and Phase 1 Custom Code.

  5. #4
    1animal1's Avatar
    The Clar!! it mouves!!!

    Status
    Offline
    Join Date
    Dec 2007
    Location
    Sheffield
    Posts
    9,990
    yup..... although without removing your never going to know
    Xbox 360 gamer ID : Timffy

    Grey Triumph Sprint 1050 ST
    Silver BMW 535D Tourer - Fully loaded 340BHP 700NM torque
    2009 8P3 S3 Brilliant Red - Sold
    2001 F/L S3 Dolphin Grey - Sold
    1999 Pre F/L Silver A3 1.8T - Sold

  6. #5
    Tastyterrier's Avatar
    Monkey Trainer

    Status
    Offline
    Join Date
    Jul 2003
    Location
    Staffordshire
    Posts
    341
    I've just been on a longer run and the problem is still there. It's definately not going into Limp Mode, just mis-firing. I'll try cleaning the plugs and see how I get on.
    A3 1.8TQS: Supersport Springs and Shocks, Xenons, BMC Filter, 18" OEM TTV6's, Bailey DV, N75J and Phase 1 Custom Code.

  7. #6
    Tastyterrier's Avatar
    Monkey Trainer

    Status
    Offline
    Join Date
    Jul 2003
    Location
    Staffordshire
    Posts
    341
    Plugs have been cleaned and torqued down but the problem is still there

    The next stage I guess is to get the codes read.
    A3 1.8TQS: Supersport Springs and Shocks, Xenons, BMC Filter, 18" OEM TTV6's, Bailey DV, N75J and Phase 1 Custom Code.

  8. #7
    golf's Avatar
    ***** rent boy

    Status
    Offline
    Join Date
    Jan 2007
    Location
    London
    Posts
    1,553
    Are you selling your N75J?

  9. #8
    Tastyterrier's Avatar
    Monkey Trainer

    Status
    Offline
    Join Date
    Jul 2003
    Location
    Staffordshire
    Posts
    341
    No, it's not the cause of the fault and (when the car isn't misfiring like me after the friday night curry) it keeps a smile on my face
    A3 1.8TQS: Supersport Springs and Shocks, Xenons, BMC Filter, 18" OEM TTV6's, Bailey DV, N75J and Phase 1 Custom Code.

  10. #9
    s3_kev's Avatar
    Stage2'd!!!!!!

    Status
    Offline
    Join Date
    Feb 2008
    Posts
    1,984
    cleaning the plugs will not fix a faulty plug and if you have changed the coils it is likely that at least one plug has failed, the fault codes will probably be of no help as they will more then likely be missfire codes but you already no that, id do the plugs first if you have no acess to checking codes as it will mean a paying trip to a garage when the plugs may solve the problem and they are a servicable item anyway so your not going to losse anyway

  11. #10
    1animal1's Avatar
    The Clar!! it mouves!!!

    Status
    Offline
    Join Date
    Dec 2007
    Location
    Sheffield
    Posts
    9,990
    just a check...did you say you had only changed 3 coils?
    Xbox 360 gamer ID : Timffy

    Grey Triumph Sprint 1050 ST
    Silver BMW 535D Tourer - Fully loaded 340BHP 700NM torque
    2009 8P3 S3 Brilliant Red - Sold
    2001 F/L S3 Dolphin Grey - Sold
    1999 Pre F/L Silver A3 1.8T - Sold

  12. #11
    Tastyterrier's Avatar
    Monkey Trainer

    Status
    Offline
    Join Date
    Jul 2003
    Location
    Staffordshire
    Posts
    341
    Yeah, as I had changed the other one a few weeks earlier.

    Any recommendations on the plugs? NGKs seem to be the spark of choice around here, which type do people prefer?
    A3 1.8TQS: Supersport Springs and Shocks, Xenons, BMC Filter, 18" OEM TTV6's, Bailey DV, N75J and Phase 1 Custom Code.

  13. #12
    abdus's Avatar
    Top Gear
    Cell-Out Champion

    Status
    Offline
    Join Date
    Apr 2007
    Location
    On an Island
    Posts
    1,810
    Denso IK22

    http://www.opieoils.co.uk/p-4090-den...FYsh3god0nMyDQ

    or get the car vagcom'ed before buying any part.
    Last edited by abdus; 28th December 2008 at 19:36.
    ^^ In my opinion


  14. #13
    1animal1's Avatar
    The Clar!! it mouves!!!

    Status
    Offline
    Join Date
    Dec 2007
    Location
    Sheffield
    Posts
    9,990
    well ive just gone for standard Audi plugs, heard nothing bad about them at all so dont really see a reason to change...unless someone wants to tell me a dear set of whateva's will give me extra umph?
    Xbox 360 gamer ID : Timffy

    Grey Triumph Sprint 1050 ST
    Silver BMW 535D Tourer - Fully loaded 340BHP 700NM torque
    2009 8P3 S3 Brilliant Red - Sold
    2001 F/L S3 Dolphin Grey - Sold
    1999 Pre F/L Silver A3 1.8T - Sold

  15. #14
    s3_kev's Avatar
    Stage2'd!!!!!!

    Status
    Offline
    Join Date
    Feb 2008
    Posts
    1,984
    ngk are standard audi plugs in my s3

  16. #15
    Typhoon's Avatar
    Reverse Gear

    Status
    Offline
    Join Date
    Dec 2008
    Location
    South Africa
    Posts
    16
    I was reading on another forum of a guy who had a simular problem as this, he has also changed everything and at the end it was he ignition module that sits on the side of your airbox with two plugs going into it on either side of the module. But these were only on the drive by cable A3's, so if yours is, then maybe test it by swapping out with a friend or some one. If it is that, the price is a bit expensive. In South-Africa these parts were common failure's on the older drive by cable A3's. Hope this helps
    A3 8L 1.8T 99
    DP with complete 63mm exhaust
    40mm lowered, 18' RS4 Mattblack
    Forge Splt-R, N75J
    Port Tuned by FRC

  17. #16
    Tastyterrier's Avatar
    Monkey Trainer

    Status
    Offline
    Join Date
    Jul 2003
    Location
    Staffordshire
    Posts
    341
    Many thanks for all the tips, it turned out that one of the new coil packs was in fact faulty!

    I've also stuck standard NGKs in there and they seem to run great.

    Cheers guys!
    A3 1.8TQS: Supersport Springs and Shocks, Xenons, BMC Filter, 18" OEM TTV6's, Bailey DV, N75J and Phase 1 Custom Code.

  18. #17
    fran-s3's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Jan 2008
    Posts
    1,090
    is it runnung fine now with the J-valve??

  19. #18
    Tastyterrier's Avatar
    Monkey Trainer

    Status
    Offline
    Join Date
    Jul 2003
    Location
    Staffordshire
    Posts
    341
    Yeah, it's running great.
    A3 1.8TQS: Supersport Springs and Shocks, Xenons, BMC Filter, 18" OEM TTV6's, Bailey DV, N75J and Phase 1 Custom Code.

  20. #19
    fran-s3's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Jan 2008
    Posts
    1,090
    Thanks, I'm running one now u see so just making sure it wasn't that giving you issues.

  21. #20
    6th Gear

    Status
    Online
    Join Date
    Feb 2008
    Posts
    2,817
    fran how is your car running now with the new j valve on compared to with before?

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO